The role of trees in the nitrous oxide (N2O) balance of boreal forests has been neglected despite evidence suggesting their substantial contribution. We measured seasonal changes in N2O fluxes from soil and stems of boreal trees in Finland, showing clear seasonality in stem N2O flux following tree physiological activity, particularly processes of CO2 uptake and release. Stem N2O emissions peak during\uffc2\uffa0the vegetation season, decrease rapidly in October, and remain low but significant to the annual totals during winter dormancy. Trees growing on dry soils even turn to consumption of\uffc2\uffa0N2O from the atmosphere during dormancy, thereby reducing their overall N2O emissions. At an\uffc2\uffa0annual scale, pine, spruce and birch are net N2O sources, with spruce being the strongest emitter. Boreal trees thus markedly contribute to the seasonal dynamics of ecosystem N2O exchange, and their species-specific contribution should be included into forest emission inventories.
", "keywords": ["EDDY COVARIANCE", "Science", "Nitrous Oxide", "NITROUS-OXIDE EMISSIONS", "Article", "CO2 EXCHANGE", "Trees", "CARBON-DIOXIDE", "Soil", "METHANE", "Taiga", "CH4 EMISSIONS", "SCOTS PINE", "Ecosystem", "Finland", "Plant Stems", "Atmosphere", "Q", "Forestry", "04 agricultural and veterinary sciences", "Carbon Dioxide", "15. Life on land", "FOREST", "Environmental sciences", "SOIL", "PLANT-GROWTH", "13. Climate action", "0401 agriculture", " forestry", " and fisheries", "Seasons", "Methane"]}, "links": [{"href": "https://www.nature.com/articles/s41467-019-12976-y.pdf"}, {"href": "https://doi.org/10.1038/s41467-019-12976-y"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Nature%20Communications", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1038/s41467-019-12976-y", "name": "item", "description": "10.1038/s41467-019-12976-y", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1038/s41467-019-12976-y"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-11-01T00:00:00Z"}}, {"id": "10.1038/s41467-022-29161-3", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:18:39Z", "type": "Journal Article", "created": "2022-03-17", "title": "Structure and function of the soil microbiome underlying N2O emissions from global wetlands", "description": "AbstractWetland soils are the greatest source of nitrous oxide (N2O), a critical greenhouse gas and ozone depleter released by microbes. Yet, microbial players and processes underlying the N2O emissions from wetland soils are poorly understood. Using in situ N2O measurements and by determining the structure and potential functional of microbial communities in 645 wetland soil samples globally, we examined the potential role of archaea, bacteria, and fungi in nitrogen (N) cycling and N2O emissions. We show that N2O emissions are higher in drained and warm wetland soils, and are correlated with functional diversity of microbes. We further provide evidence that despite their much lower abundance compared to bacteria, nitrifying archaeal abundance is a key factor explaining N2O emissions from wetland soils globally. Our data suggest that ongoing global warming and intensifying environmental change may boost archaeal nitrifiers, collectively transforming wetland soils to a greater source of N2O.The in situ application of rice straw enhances CH4 emissions by a large margin. The ex situ application of rice straw in uplands, however, may mitigate total global warming potential (GWP) of CH4 and N2O emissions from paddy-upland coexisting systems. To evaluate the efficiency of this practice, two field trials were conducted in rice-rice-fallow and maize-rape cropping systems, respectively. Year-round measurements of CH4 and N2O emissions were conducted to evaluate the system-scaled GWP. The results showed that CH4 accounted for more than 98% of GWP in paddy. Straw removal from paddy decreased 44.7% (302.1\uffe2\uff80\uff89kg ha\uffe2\uff88\uff921 yr\uffe2\uff88\uff921) of CH4 emissions and 51.2% (0.31\uffe2\uff80\uff89kg ha\uffe2\uff88\uff921 yr\uffe2\uff88\uff921) of N2O emissions, thus decreased 44.8% (7693\uffe2\uff80\uff89kg CO2-eqv ha\uffe2\uff88\uff921 yr\uffe2\uff88\uff921) of annual GWP. N2O accounted for almost 100% of GWP in upland. Straw application in upland had insignificant effects on CH4 and N2O emissions, which increased GWP only by 91\uffe2\uff80\uff89kg CO2-eqv ha\uffe2\uff88\uff921 yr\uffe2\uff88\uff921. So, the transfer of straw from paddy to upland could decrease GWP by 7602\uffe2\uff80\uff89kg CO2-eqv ha\uffe2\uff88\uff921 yr\uffe2\uff88\uff921. Moreover, straw retention during late rice season contributed to 88.2% of annual GWP increment. It is recommended to transfer early rice straw to upland considering GWP mitigation, nutrient recycling and labor cost.
", "keywords": ["Waste Products", "2. Zero hunger", "Rain", "Nitrous Oxide", "Temperature", "Agriculture", "Oryza", "04 agricultural and veterinary sciences", "15. Life on land", "Global Warming", "Article", "6. Clean water", "Soil", "13. Climate action", "0401 agriculture", " forestry", " and fisheries", "Methane"], "contacts": [{"organization": "Xiaohong Wu, Xiaoli Xie, Wei Wang, Anlei Chen, Chunmei Yin, Yunqiu Wang,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1038/srep37402"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Scientific%20Reports", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1038/srep37402", "name": "item", "description": "10.1038/srep37402", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1038/srep37402"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2016-11-21T00:00:00Z"}}, {"id": "10.1051/agro/2009039", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:18:56Z", "type": "Journal Article", "created": "2010-02-10", "title": "Biofuels, Greenhouse Gases And Climate Change. A Review", "description": "Biofuels are fuels produced from biomass, mostly in liquid form, within a time frame sufficiently short to consider that their feedstock (biomass) can be renewed, contrarily to fossil fuels. This paper reviews the current and future biofuel technologies, and their development impacts (including on the climate) within given policy and economic frameworks. Current technologies make it possible to provide first generation biodiesel, ethanol or biogas to the transport sector to be blended with fossil fuels. Still under-development 2nd generation biofuels from lignocellulose should be available on the market by 2020. Research is active on the improvement of their conversion efficiency. A ten-fold increase compared with current cost-effective capacities would make them highly competitive. Within bioenergy policies, emphasis has been put on biofuels for transportation as this sector is fast-growing and represents a major source of anthropogenic greenhouse gas emissions. Compared with fossil fuels, biofuel combustion can emit less greenhouse gases throughout their life cycle, considering that part of the emitted CO2 returns to the atmosphere where it was fixed from by photosynthesis in the first place. Life cycle assessment (LCA) is commonly used to assess the potential environmental impacts of biofuel chains, notably the impact on global warming. This tool, whose holistic nature is fundamental to avoid pollution trade-offs, is a standardised methodology that should make comparisons between biofuel and fossil fuel chains objective and thorough. However, it is a complex and time-consuming process, which requires lots of data, and whose methodology is still lacking harmonisation. Hence the life-cycle performances of biofuel chains vary widely in the literature. Furthermore, LCA is a site- and timeindependent tool that cannot take into account the spatial and temporal dimensions of emissions, and can hardly serve as a decision-making tool either at local or regional levels. Focusing on greenhouse gases, emission factors used in LCAs give a rough estimate of the potential average emissions on a national level. However, they do not take into account the types of crop, soil or management practices, for instance. Modelling the impact of local factors on the determinism of greenhouse gas emissions can provide better estimates for LCA on the local level, which would be the relevant scale and degree of reliability for decision-making purposes. Nevertheless, a deeper understanding of the processes involved, most notably N2O emissions, is still needed to definitely improve the accuracy of LCA. Perennial crops are a promising option for biofuels, due to their rapid and efficient use of nitrogen, and their limited farming operations. However, the main overall limiting factor to biofuel development will ultimately be land availability. Given the available land areas, population growth rate and consumption behaviours, it would be possible to reach by 2030 a global 10% biofuel share in the transport sector, contributing to lower global greenhouse gas emissions by up to 1 GtCO2 eq.year\u22121 (IEA, 2006), provided that harmonised policies ensure that sustainability criteria for the production systems are respected worldwide. Furthermore, policies should also be more integrative across sectors, so that changes in energy efficiency, the automotive sector and global consumption patterns converge towards drastic reduction of the pressure on resources. Indeed, neither biofuels nor other energy source or carriers are likely to mitigate the impacts of anthropogenic pressure on resources in a range that would compensate for this pressure growth. Hence, the first step is to reduce this pressure by starting from the variable that drives it up, i.e. anthropic consumptions.", "keywords": ["[SDV.SA]Life Sciences [q-bio]/Agricultural sciences", "AGRICULTURAL PRATICES", "P05 - Ressources \u00e9nerg\u00e9tiques et leur gestion", "P06 - Sources d'\u00e9nergie renouvelable", "NITROUS OXIDE", "[SDV]Life Sciences [q-bio]", "CLIMATE CHANGE", "BIOFUELS", "710", "02 engineering and technology", "http://aims.fao.org/aos/agrovoc/c_16181", "7. Clean energy", "http://aims.fao.org/aos/agrovoc/c_2570", "land-use change", "CARBON DIOXIDE", "11. Sustainability", "0202 electrical engineering", " electronic engineering", " information engineering", "gaz \u00e0 effet de serre", "http://aims.fao.org/aos/agrovoc/c_34841", "http://aims.fao.org/aos/agrovoc/c_2018", "\u00e9nergie renouvelable", "POLITICAL AND ECONOMIC FRAMEWORKS", "2. Zero hunger", "changement climatique", "[SDV.SA] Life Sciences [q-bio]/Agricultural sciences", "http://aims.fao.org/aos/agrovoc/c_27465", "bioenergy potential", "nitrous oxide", "LCA", "BIOENERGY POTENTIAL", "LAND-USE CHANGE", "[SDV] Life Sciences [q-bio]", "[SDV.EE] Life Sciences [q-bio]/Ecology", " environment", "source d'\u00e9nergie", "http://aims.fao.org/aos/agrovoc/c_926", "climate change", "politique \u00e9nerg\u00e9tique", "perennials", "ENERGY CROPS", "GREENHOUSE GASES", "http://aims.fao.org/aos/agrovoc/c_28744", "oxyde d'azote", "P40 - M\u00e9t\u00e9orologie et climatologie", "PERENNIALS", "agricultural practices", "pollution par l'agriculture", "12. Responsible consumption", "dioxyde de carbone", "greenhouse gases", "http://aims.fao.org/aos/agrovoc/c_25719", "biomasse", "http://aims.fao.org/aos/agrovoc/c_1302", "http://aims.fao.org/aos/agrovoc/c_1666", "AGRONOMIE", "political and economic frameworks", "energy crops", "pratique culturale", "bio\u00e9nergie", "660", "carbon dioxide", "biofuels", "biocarburant", "http://aims.fao.org/aos/agrovoc/c_16002", "13. Climate action", "http://aims.fao.org/aos/agrovoc/c_16526"]}, "links": [{"href": "https://hal.science/cirad-00749753/file/Article_ASD.2010.pdf"}, {"href": "https://doi.org/10.1051/agro/2009039"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Agronomy%20for%20Sustainable%20Development", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1051/agro/2009039", "name": "item", "description": "10.1051/agro/2009039", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1051/agro/2009039"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2011-01-01T00:00:00Z"}}, {"id": "10.1071/sr10004", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:19:06Z", "type": "Journal Article", "created": "2010-09-28", "title": "Influence Of Biochars On Flux Of N2o And Co2from Ferrosol", "description": "Biochars produced by slow pyrolysis of greenwaste (GW), poultry litter (PL), papermill waste (PS), and biosolids (BS) were shown to reduce N2O emissions from an acidic Ferrosol. Similar reductions were observed for the untreated GW feedstock. Soil was amended with biochar or feedstock giving application rates of 1 and 5%. Following an initial incubation, nitrogen (N) was added at 165\uffe2\uff80\uff89kg/ha as urea. Microcosms were again incubated before being brought to 100% water-filled porosity and held at this water content for a further 47 days. The flooding phase accounted for the majority (<80%) of total N2O emissions. The control soil released 3165\uffe2\uff80\uff89mg N2O-N/m2, or 15.1% of the available N as N2O. Amendment with 1 and 5% GW feedstock significantly reduced emissions to 1470 and 636\uffe2\uff80\uff89mg N2O-N/m2, respectively. This was equivalent to 8.6 and 3.8% of applied N. The GW biochar produced at 350\uffc2\uffb0C was least effective in reducing emissions, resulting in 1625 and 1705\uffe2\uff80\uff89mg N2O-N/m2 for 1 and 5% amendments. Amendment with BS biochar at 5% had the greatest impact, reducing emissions to 518\uffe2\uff80\uff89mg N2O-N/m2, or 2.2% of the applied N over the incubation period. Metabolic activity as measured by CO2 production could not explain the differences in N2O emissions between controls and amendments, nor could NH4+ or NO3\uffe2\uff80\uff93 concentrations in biochar-amended soils. A decrease in NH4+ and NO3\uffe2\uff80\uff93 following GW feedstock application is likely to have been responsible for reducing N2O emissions from this amendment. Reduction in N2O emissions from the biochar-amended soils was attributed to increased adsorption of NO3\uffe2\uff80\uff93. Small reductions are possible due to improved aeration and porosity leading to lower levels of denitrification and N2O emissions. Alternatively, increased pH was observed, which can drive denitrification through to dinitrogen during soil flooding.
", "keywords": ["2. Zero hunger", "nitrous oxide", "biosolids", "mechanism", "04 agricultural and veterinary sciences", "910", "15. Life on land", "slow pyrolysis", "6. Clean water", "13. Climate action", "soil properties", "0401 agriculture", " forestry", " and fisheries", "biochar", "poultry litter", "papermill", "greenwaste"]}, "links": [{"href": "https://doi.org/10.1071/sr10004"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20Research", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1071/sr10004", "name": "item", "description": "10.1071/sr10004", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1071/sr10004"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2010-01-01T00:00:00Z"}}, {"id": "10.1071/wf10120", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:19:08Z", "type": "Journal Article", "created": "2011-10-16", "title": "Soil N2o Emissions In A Mediterranean Shrubland Disturbed By Experimental Fires", "description": "In the present work, post-burning soil N2O fluxes and related microbial processes were investigated in a Mediterranean shrubland subjected to experimental fires. Nine plots were selected, of which three were used as controls, three were burned with low-intensity fire and three with higher intensity fire. N2O fluxes, soil humidity and temperature were measured starting 2 days before burning and for 1 year after fire. Potential net nitrification, denitrification enzyme activity, mineral N and organic C were measured from soil samples collected periodically after burning. Cumulative data indicate a doubling of N2O production in burned plots over 1 year. Burned plots showed an increase of frequency of hot spots of N2O production. A slight detrimental effect of fire on the analysed biological activities was detected only immediately after burning. After 3 months, both potential net nitrification and denitrification enzyme activity had mostly recovered and potential net nitrification further increased over control levels in the following months. Fire seemed to induce a change in the main source of N2O, which in control plots was represented by heterotrophic activity (50\uffe2\uff80\uff9375%), whereas in burned plots it was mostly of autotrophic origin, most probably due to the significant increase of soil NH4+ after burning.
", "keywords": ["2. Zero hunger", "Nitrous oxide", "denitrification; fire intensity; nitrification; soil nitrogen;", "13. Climate action", "Nitrous oxide; soil; fire", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land", "fire", "soil"]}, "links": [{"href": "https://doi.org/10.1071/wf10120"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/International%20Journal%20of%20Wildland%20Fire", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1071/wf10120", "name": "item", "description": "10.1071/wf10120", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1071/wf10120"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2011-01-01T00:00:00Z"}}, {"id": "10.1073/pnas.1017277108", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:19:09Z", "type": "Journal Article", "created": "2011-08-09", "title": "Carbon Debt Of Conservation Reserve Program (Crp) Grasslands Converted To Bioenergy Production", "description": "Over 13 million ha of former cropland are enrolled in the US Conservation Reserve Program (CRP), providing well-recognized biodiversity, water quality, and carbon (C) sequestration benefits that could be lost on conversion back to agricultural production. Here we provide measurements of the greenhouse gas consequences of converting CRP land to continuous corn, corn\uffe2\uff80\uff93soybean, or perennial grass for biofuel production. No-till soybeans preceded the annual crops and created an initial carbon debt of 10.6 Mg CO 2 equivalents (CO 2 e)\uffc2\uffb7ha \uffe2\uff88\uff921 that included agronomic inputs, changes in C stocks, altered N 2 O and CH 4 fluxes, and foregone C sequestration less a fossil fuel offset credit. Total debt, which includes future debt created by additional changes in soil C stocks and the loss of substantial future soil C sequestration, can be constrained to 68 Mg CO 2 e\uffc2\uffb7ha \uffe2\uff88\uff921 if subsequent crops are under permanent no-till management. If tilled, however, total debt triples to 222 Mg CO 2 e\uffc2\uffb7ha \uffe2\uff88\uff921 on account of further soil C loss. Projected C debt repayment periods under no-till management range from 29 to 40 y for corn\uffe2\uff80\uff93soybean and continuous corn, respectively. Under conventional tillage repayment periods are three times longer, from 89 to 123 y, respectively. Alternatively, the direct use of existing CRP grasslands for cellulosic feedstock production would avoid C debt entirely and provide modest climate change mitigation immediately. Incentives for permanent no till and especially permission to harvest CRP biomass for cellulosic biofuel would help to blunt the climate impact of future CRP conversion.
", "keywords": ["Crops", " Agricultural", "Greenhouse Effect", "2. Zero hunger", "Renewable energy", "Conservation of Natural Resources", "Nitrous oxide", "Land-use change", "Agriculture", "Carbon balance", "15. Life on land", "Animal Feed", "7. Clean energy", "01 natural sciences", "Carbon", "United States", "Government Programs", "13. Climate action", "Biofuels", "Cellulose", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1073/pnas.1017277108"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Proceedings%20of%20the%20National%20Academy%20of%20Sciences", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1073/pnas.1017277108", "name": "item", "description": "10.1073/pnas.1017277108", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1073/pnas.1017277108"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2011-08-08T00:00:00Z"}}, {"id": "10.1073/pnas.1116364109", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:19:09Z", "type": "Journal Article", "created": "2012-01-10", "title": "High-Yield Maize With Large Net Energy Yield And Small Global Warming Intensity", "description": "Addressing concerns about future food supply and climate change requires management practices that maximize productivity per unit of arable land while reducing negative environmental impact. On-farm data were evaluated to assess energy balance and greenhouse gas (GHG) emissions of irrigated maize in Nebraska that received large nitrogen (N) fertilizer (183 kg of N\uffe2\uff8b\uff85ha \uffe2\uff88\uff921 ) and irrigation water inputs (272 mm or 2,720 m 3 ha \uffe2\uff88\uff921 ). Although energy inputs (30 GJ\uffe2\uff8b\uff85ha \uffe2\uff88\uff921 ) were larger than those reported for US maize systems in previous studies, irrigated maize in central Nebraska achieved higher grain and net energy yields (13.2 Mg\uffe2\uff8b\uff85ha \uffe2\uff88\uff921 and 159 GJ\uffe2\uff8b\uff85ha \uffe2\uff88\uff921 , respectively) and lower GHG-emission intensity (231 kg of CO 2 e\uffe2\uff8b\uff85Mg \uffe2\uff88\uff921 of grain). Greater input-use efficiencies, especially for N fertilizer, were responsible for better performance of these irrigated systems, compared with much lower-yielding, mostly rainfed maize systems in previous studies. Large variation in energy inputs and GHG emissions across irrigated fields in the present study resulted from differences in applied irrigation water amount and imbalances between applied N inputs and crop N demand, indicating potential to further improve environmental performance through better management of these inputs. Observed variation in N-use efficiency, at any level of applied N inputs, suggests that an N-balance approach may be more appropriate for estimating soil N 2 O emissions than the Intergovernmental Panel on Climate Change approach based on a fixed proportion of applied N. Negative correlation between GHG-emission intensity and net energy yield supports the proposition that achieving high yields, large positive energy balance, and low GHG emissions in intensive cropping systems are not conflicting goals.
", "keywords": ["land use change", "Greenhouse Effect", "2. Zero hunger", "Agricultural Irrigation", "330", "Databases", " Factual", "Plant Sciences", "Nitrous Oxide", "Agriculture", "Nebraska", "food security", "04 agricultural and veterinary sciences", "crop intensification", "15. Life on land", "Zea mays", "6. Clean water", "Soil", "13. Climate action", "Air Pollution", "11. Sustainability", "0401 agriculture", " forestry", " and fisheries", "agro-ecosystem", "Fertilizers", "environmental footprint"], "contacts": [{"organization": "Grassini, Patricio, Cassman, Kenneth,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1073/pnas.1116364109"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Proceedings%20of%20the%20National%20Academy%20of%20Sciences", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1073/pnas.1116364109", "name": "item", "description": "10.1073/pnas.1116364109", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1073/pnas.1116364109"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2012-01-09T00:00:00Z"}}, {"id": "10.1073/pnas.1809276115", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:19:10Z", "type": "Journal Article", "created": "2018-09-10", "title": "High Nitrous Oxide Fluxes From Rice Indicate The Need To Manage Water For Both Long- And Short-Term Climate Impacts", "description": "SignificanceMethane from global rice cultivation currently accounts for one-half of all crop-related greenhouse gas emissions. Several international organizations are advocating reductions in methane emissions from rice by promoting intermittent flooding without accounting for the possibility of large emissions of nitrous oxide (N 2 O), a long-lived greenhouse gas. Our experimental results suggest that the Indian subcontinent\uffe2\uff80\uff99s N 2 O emissions from intermittently flooded rice fields could be 30\uffe2\uff80\uff9345 times higher than reported under continuous flooding. Net climate impacts of rice cultivation could be reduced by up to 90% through comanagement of water, nitrogen, and carbon. To do this effectively will require a careful ongoing global assessment of N 2 O emissions from rice, or we will risk ignoring a very large source of climate impact.
", "keywords": ["2. Zero hunger", "Nitrous oxide", "550", "Climate Change", "Nitrous Oxide", "Water", "India", "Oryza", "04 agricultural and veterinary sciences", "Biological Sciences", "15. Life on land", "630", "Crop Production", "6. Clean water", "12. Responsible consumption", "Greenhouse Gases", "Alternate wetting and drying", "Water Supply", "13. Climate action", "11. Sustainability", "0401 agriculture", " forestry", " and fisheries", "Rice", "Methane"]}, "links": [{"href": "https://doi.org/10.1073/pnas.1809276115"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Proceedings%20of%20the%20National%20Academy%20of%20Sciences", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1073/pnas.1809276115", "name": "item", "description": "10.1073/pnas.1809276115", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1073/pnas.1809276115"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2018-09-10T00:00:00Z"}}, {"id": "10.1111/gcb.13485", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:19:56Z", "type": "Journal Article", "created": "2016-08-29", "title": "A meta-analysis of fertilizer-induced soil NO and combined NO+N2O emissions", "description": "AbstractSoils are among the important sources of atmospheric nitric oxide (NO) and nitrous oxide (N2O), acting as a critical role in atmospheric chemistry. Updated data derived from 114 peer\uffe2\uff80\uff90reviewed publications with 520 field measurements were synthesized using meta\uffe2\uff80\uff90analysis procedure to examine the N fertilizer\uffe2\uff80\uff90induced soil NO and the combined NO+N2O emissions across global soils. Besides factors identified in earlier reviews, additional factors responsible for NO fluxes were fertilizer type, soil C/N ratio, crop residue incorporation, tillage, atmospheric carbon dioxide concentration, drought and biomass burning. When averaged across all measurements, soil NO\uffe2\uff80\uff90N fluxes were estimated to be 4.06\uffc2\uffa0kg ha\uffe2\uff88\uff921\uffc2\uffa0yr\uffe2\uff88\uff921, with the greatest (9.75\uffc2\uffa0kg ha\uffe2\uff88\uff921\uffc2\uffa0yr\uffe2\uff88\uff921) in vegetable croplands and the lowest (0.11\uffc2\uffa0kg ha\uffe2\uff88\uff921\uffc2\uffa0yr\uffe2\uff88\uff921) in rice paddies. Soil NO emissions were more enhanced by synthetic N fertilizer (+38%), relative to organic (+20%) or mixed N (+18%) sources. Compared with synthetic N fertilizer alone, synthetic N fertilizer combined with nitrification inhibitors substantially reduced soil NO emissions by 81%. The global mean direct emission factors of N fertilizer for NO (EFNO) and combined NO+N2O (EFc) were estimated to be 1.16% and 2.58%, with 95% confidence intervals of 0.71\uffe2\uff80\uff931.61% and 1.81\uffe2\uff80\uff933.35%, respectively. Forests had the greatest EFNO (2.39%). Within the croplands, the EFNO (1.71%) and EFc (4.13%) were the greatest in vegetable cropping fields. Among different chemical N fertilizer varieties, ammonium nitrate had the greatest EFNO (2.93%) and EFc (5.97%). Some options such as organic instead of synthetic N fertilizer, decreasing N fertilizer input rate, nitrification inhibitor and low irrigation frequency could be adopted to mitigate soil NO emissions. More field measurements over multiyears are highly needed to minimize the estimate uncertainties and mitigate soil NO emissions, particularly in forests and vegetable croplands.
", "keywords": ["Crops", " Agricultural", "2. Zero hunger", "Nitrous Oxide", "04 agricultural and veterinary sciences", "Forests", "15. Life on land", "Nitric Oxide", "01 natural sciences", "6. Clean water", "Soil", "13. Climate action", "0401 agriculture", " forestry", " and fisheries", "Fertilizers", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1111/gcb.13485"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Global%20Change%20Biology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1111/gcb.13485", "name": "item", "description": "10.1111/gcb.13485", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1111/gcb.13485"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2016-10-26T00:00:00Z"}}, {"id": "10.1080/09064710.2012.751451", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:19:21Z", "type": "Journal Article", "created": "2012-11-23", "title": "Regional Greenhouse Gas Emissions From Cultivation Of Winter Wheat And Winter Rapeseed For Biofuels In Denmark", "description": "Abstract Biofuels from bioenergy crops may substitute a significant part of fossil fuels in the transport sector where, e.g., the European Union has set a target of using 10% renewable energy by 2020. Savings of greenhouse gas emissions by biofuels vary according to cropping systems and are influenced by such regional factors as soil conditions, climate and input of agrochemicals. Here we analysed at a regional scale the greenhouse gas (GHG) emissions associated with cultivation of winter wheat for bioethanol and winter rapeseed for rapeseed methyl ester (RME) under Danish conditions. Emitted CO2 equivalents (CO2eq) were quantified from the footprints of CO2, CH4 and N2O associated with cultivation and the emissions were allocated between biofuel energy and co-products. Greenhouse gas emission at the national level (Denmark) was estimated to 22.1 g CO2eq MJ\u22121 ethanol for winter wheat and 26.0 g CO2eq MJ\u22121 RME for winter rapeseed. Results at the regional level (level 2 according to the Nomenclature of Terr...", "keywords": ["2. Zero hunger", "carbon footprint", "greenhouse gas emissions", "Nitrous Oxide", "cropping systems", "15. Life on land", "7. Clean energy", "01 natural sciences", "biofuels", "12. Responsible consumption", "land-use change", "13. Climate action", "11. Sustainability", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1080/09064710.2012.751451"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Acta%20Agriculturae%20Scandinavica%2C%20Section%20B%20-%20Soil%20%26amp%3B%20Plant%20Science", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1080/09064710.2012.751451", "name": "item", "description": "10.1080/09064710.2012.751451", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1080/09064710.2012.751451"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2013-04-01T00:00:00Z"}}, {"id": "10.1111/gcb.13637", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:19:56Z", "type": "Journal Article", "created": "2017-01-30", "title": "Long-Term No-Till And Stover Retention Each Decrease The Global Warming Potential Of Irrigated Continuous Corn", "description": "AbstractOver the last 50\uffc2\uffa0years, the most increase in cultivated land area globally has been due to a doubling of irrigated land. Long\uffe2\uff80\uff90term agronomic management impacts on soil organic carbon (SOC) stocks, soil greenhouse gas (GHG) emissions, and global warming potential (GWP) in irrigated systems, however, remain relatively unknown. Here, residue and tillage management effects were quantified by measuring soil nitrous oxide (N2O) and methane (CH4) fluxes and SOC changes (\uffce\uff94SOC) at a long\uffe2\uff80\uff90term, irrigated continuous corn (Zea mays L.) system in eastern Nebraska, United States. Management treatments began in 2002, and measured treatments included no or high stover removal (0 or 6.8\uffc2\uffa0Mg\uffc2\uffa0DM\uffc2\uffa0ha\uffe2\uff88\uff921\uffc2\uffa0yr\uffe2\uff88\uff921, respectively) under no\uffe2\uff80\uff90till (NT) or conventional disk tillage (CT) with full irrigation (n\uffc2\uffa0=\uffc2\uffa04). Soil N2O and CH4 fluxes were measured for five crop\uffe2\uff80\uff90years (2011\uffe2\uff80\uff932015), and \uffce\uff94SOC was determined on an equivalent mass basis to ~30\uffc2\uffa0cm soil depth. Both area\uffe2\uff80\uff90 and yield\uffe2\uff80\uff90scaled soil N2O emissions were greater with stover retention compared to removal and for CT compared to NT, with no interaction between stover and tillage practices. Methane comprised <1% of total emissions, with NT being CH4 neutral and CT a CH4 source. Surface SOC decreased with stover removal and with CT after 14\uffc2\uffa0years of management. When \uffce\uff94SOC, soil GHG emissions, and agronomic energy usage were used to calculate system GWP, all management systems were net GHG sources. Conservation practices (NT, stover retention) each decreased system GWP compared to conventional practices (CT, stover removal), but pairing conservation practices conferred no additional mitigation benefit. Although cropping system, management equipment/timing/history, soil type, location, weather, and the depth to which \uffce\uff94SOC is measured affect the GWP outcomes of irrigated systems at large, this long\uffe2\uff80\uff90term irrigated study provides valuable empirical evidence of how management decisions can impact soil GHG emissions and surface SOC stocks.
", "keywords": ["Crops", " Agricultural", "Greenhouse Effect", "2. Zero hunger", "no-till", "Agricultural Irrigation", "nitrous oxide", "550", "methane", "Nitrous Oxide", "conventional tillage", "Agriculture", "04 agricultural and veterinary sciences", "15. Life on land", "Global Warming", "Zea mays", "7. Clean energy", "630", "6. Clean water", "soil organic carbon", "Soil", "greenhouse gas intensity", "13. Climate action", "global warming potential", "0401 agriculture", " forestry", " and fisheries", "stover removal"]}, "links": [{"href": "https://doi.org/10.1111/gcb.13637"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Global%20Change%20Biology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1111/gcb.13637", "name": "item", "description": "10.1111/gcb.13637", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1111/gcb.13637"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2017-02-28T00:00:00Z"}}, {"id": "10.1111/gcb.14466", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:19:56Z", "type": "Journal Article", "created": "2018-10-08", "title": "Trade-offs between soil carbon sequestration and reactive nitrogen losses under straw return in global agroecosystems", "description": "AbstractIt is widely recommended that crop straw be returned to croplands to maintain or increase soil carbon (C) storage in arable soils. However, because C and nitrogen (N) biogeochemical cycles are closely coupled, straw return may also affect soil reactive N (Nr) losses, but these effects remain uncertain, especially in terms of the interactions between soil C sequestration and Nr losses under straw addition. Here, we conducted a global meta\uffe2\uff80\uff90analysis using 363 publications to assess the overall effects of straw return on soil Nr losses, C sequestration and crop productivity in agroecosystems. Our results show that on average, compared to mineral N fertilization, straw return with same amount of mineral N fertilizer significantly increased soil organic C (SOC) content (14.9%), crop yield (5.1%), and crop N uptake (10.9%). Moreover, Nr losses in the form of nitrous oxide (N2O) emissions from rice paddies (17.3%), N leaching (8.7%), and runoff (25.6%) were significantly reduced, mainly due to enhanced microbial N immobilization. However, N2O emissions from upland fields (21.5%) and ammonia (NH3) emissions (17.0%) significantly increased following straw return, mainly due to the stimulation of nitrification/denitrification and soil urease activity. The increase in NH3 and N2O emissions was significantly and negatively correlated with straw C/N ratio and soil clay content. Regarding the interactions between C sequestration and Nr losses, the increase in SOC content following straw return was significantly and positively correlated with the decrease in N leaching and runoff. However, at a global scale, straw return increased net Nr losses from both rice and upland fields due to a greater stimulation of NH3 emissions than the reduction in N leaching and runoff. The trade\uffe2\uff80\uff90offs between increased net Nr losses and soil C sequestration highlight the importance of reasonably managing straw return to soils to limit NH3 emissions without decreasing associated C sequestration potential.
", "keywords": ["2. Zero hunger", "Carbon Sequestration", "info:eu-repo/classification/ddc/550", "330", "550", "ddc:550", "Nitrogen", "Nitrous Oxide", "Agriculture", "Oryza", "04 agricultural and veterinary sciences", "15. Life on land", "Nitrification", "630", "Earth sciences", "Soil", "13. Climate action", "0401 agriculture", " forestry", " and fisheries", "Fertilizers", "Humic Substances"]}, "links": [{"href": "https://doi.org/10.1111/gcb.14466"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Global%20Change%20Biology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1111/gcb.14466", "name": "item", "description": "10.1111/gcb.14466", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1111/gcb.14466"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2018-10-25T00:00:00Z"}}, {"id": "10.1088/1748-9326/11/5/054004", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:19:27Z", "type": "Journal Article", "created": "2016-04-26", "description": "Open AccessEn este estudio, se examinaron los efectos de la intensidad del pastoreo de ganado en los flujos de \u00f3xido nitroso (N2O) del suelo en la estepa del prado de Hulunber, en el noreste de China. Se establecieron seis tratamientos de tasa de siembra (0, 0.23, 0.34, 0.46, 0.69 y 0.92 AU ha\u22121) con tres r\u00e9plicas, y se realizaron observaciones de 2010 a 2014. Nuestros resultados mostraron que se produjeron fluctuaciones temporales sustanciales en el flujo de N2O entre las diferentes intensidades de pastoreo, con flujos m\u00e1ximos de N2O despu\u00e9s de la lluvia natural. El pastoreo tuvo un efecto a largo plazo en el flujo de N2O del suelo en los pastizales. Despu\u00e9s de 4\u20135 a\u00f1os de pastoreo, los flujos de N2O bajo mayores niveles de intensidad de pastoreo comenzaron a disminuir significativamente en un 31.4%\u201360.2% en 2013 y 32.5%\u201350.5% en 2014 en comparaci\u00f3n con el tratamiento sin pastoreo. Observamos una relaci\u00f3n lineal negativa significativa entre los flujos de N2O del suelo y la intensidad del pastoreo para la media de cinco a\u00f1os. El flujo de N2O del suelo se vio afectado significativamente cada a\u00f1o en todos los tratamientos. Durante los cinco a\u00f1os, el coeficiente de variaci\u00f3n temporal (CV) del flujo de N2O del suelo generalmente disminuy\u00f3 significativamente con el aumento de la intensidad del pastoreo. La tasa de emisi\u00f3n de N2O del suelo se correlacion\u00f3 significativamente de manera positiva con la humedad del suelo (SM), el f\u00f3sforo disponible en el suelo (SAP), la biomasa sobre el suelo (AGB), la cobertura vegetal y la altura y se correlacion\u00f3 negativamente con el nitr\u00f3geno total del suelo (TN). Las regresiones escalonadas mostraron que el flujo de N2O se explicaba principalmente por SM, altura de la planta, TN, pH del suelo y suelo Usando modelos de ecuaciones estructurales, mostramos que el pastoreo influy\u00f3 significativamente directamente en la comunidad de plantas y el entorno del suelo, que luego influy\u00f3 en los flujos de N2O del suelo. Nuestros hallazgos proporcionan una referencia importante para comprender mejor los mecanismos e identificar las v\u00edas de los efectos del pastoreo en las tasas de emisi\u00f3n de N2O del suelo, y los impulsores clave de la comunidad vegetal y el entorno del suelo dentro del ciclo del nitr\u00f3geno que probablemente afecten las emisiones de N2O en las estepas de los prados de Mongolia Interior.", "keywords": ["Biomass (ecology)", "driving factor", "Mechanics and Transport in Unsaturated Soils", "Science", "QC1-999", "Soil Science", "Environmental technology. Sanitary engineering", "Environmental science", "meadow steppe", "Agricultural and Biological Sciences", "Engineering", "GE1-350", "Biology", "TD1-1066", "Civil and Structural Engineering", "2. Zero hunger", "Steppe", "Soil Fertility", "Nitrous oxide", "Ecology", "Physics", "Q", "Life Sciences", "04 agricultural and veterinary sciences", "15. Life on land", "soil N2O fluxes", "Soil Erosion and Agricultural Sustainability", "Agronomy", "6. Clean water", "Environmental sciences", "grazing intensity", "Grazing", "13. Climate action", "FOS: Biological sciences", "response and mechanism", "Physical Sciences", "Growing season", "0401 agriculture", " forestry", " and fisheries", "Soil Carbon Dynamics and Nutrient Cycling in Ecosystems"], "contacts": [{"organization": "Ruirui Yan, Huajun Tang, Xiaoping Xin, Baorui Chen, Philip J. Murray, Yunchun Yan, Xu Wang, Guoxiang Yang,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1088/1748-9326/11/5/054004"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Environmental%20Research%20Letters", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1088/1748-9326/11/5/054004", "name": "item", "description": "10.1088/1748-9326/11/5/054004", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1088/1748-9326/11/5/054004"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2016-04-26T00:00:00Z"}}, {"id": "10.1088/1748-9326/ac9b50", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:19:28Z", "type": "Journal Article", "created": "2022-10-19", "title": "Synthesizing the evidence of nitrous oxide mitigation practices in agroecosystems", "description": "AbstractNitrous oxide (N2O) emissions from agricultural soils are the main source of atmospheric N2O, a potent greenhouse gas and key ozone-depleting substance. Several agricultural practices with potential to mitigate N2O emissions have been tested worldwide. However, to guide policymaking for reducing N2O emissions from agricultural soils, it is necessary to better understand the overall performance and variability of mitigation practices and identify those requiring further investigation. We performed a systematic review and a second-order meta-analysis to assess the abatement efficiency of N2O mitigation practices from agricultural soils. We used 27 meta-analyses including 41 effect sizes based on 1119 primary studies. Technology-driven solutions (e.g. enhanced-efficiency fertilizers, drip irrigation, and biochar) and optimization of fertilizer rate have considerable mitigation potential. Agroecological mitigation practices (e.g. organic fertilizer and reduced tillage), while potentially contributing to soil quality and carbon storage, may enhance N2O emissions and only lead to reductions under certain pedoclimatic and farming conditions. Other mitigation practices (e.g. lime amendment or crop residue removal) led to marginal N2O decreases. Despite the variable mitigation potential, evidencing the context-dependency of N2O reductions and tradeoffs, several mitigation practices may maintain or increase crop production, representing relevant alternatives for policymaking to reduce greenhouse gas emissions and safeguard food security.Climate warming and summer droughts alter soil microbial activity, affecting greenhouse gas (GHG) emissions in Arctic and alpine regions. However, the long-term effects of warming, and implications for future microbial resilience, are poorly understood. Using one alpine and three Arctic soils subjected to in situ long-term experimental warming, we simulated drought in laboratory incubations to test how microbial functional-gene abundance affects fluxes in three GHGs: carbon dioxide, methane, and nitrous oxide. We found that responses of functional gene abundances to drought and warming are strongly associated with vegetation type and soil carbon. Our sites ranged from a wet, forb dominated, soil carbon-rich systems to a drier, soil carbon-poor alpine site. Resilience of functional gene abundances, and in turn methane and carbon dioxide fluxes, was lower in the wetter, carbon-rich systems. However, we did not detect an effect of drought or warming on nitrous oxide fluxes. All gene\uffe2\uff80\uff93GHG relationships were modified by vegetation type, with stronger effects being observed in wetter, forb-rich soils. These results suggest that impacts of warming and drought on GHG emissions are linked to a complex set of microbial gene abundances and may be habitat-specific. In earlier work, we compared the amount of newly fixed nitrogen (N, as synthetic fertilizer and biologically fixed N) entering agricultural systems globally to the total emission of nitrous oxide (N 2 O). We obtained an N 2 O emission factor (EF) of 3\uffe2\uff80\uff935%, and applied it to biofuel production. For \uffe2\uff80\uff98first-generation\uffe2\uff80\uff99 biofuels, e.g. biodiesel from rapeseed and bioethanol from corn (maize), that require N fertilizer, N 2 O from biofuel production could cause (depending on N uptake efficiency) as much or more global warming as that avoided by replacement of fossil fuel by the biofuel. Our subsequent calculations in a follow-up paper, using published life cycle analysis (LCA) models, led to broadly similar conclusions. The N 2 O EF applies to agricultural crops in general, not just to biofuel crops, and has made possible a top-down estimate of global emissions from agriculture. Independent modelling by another group using bottom-up IPCC inventory methodology has shown good agreement at the global scale with our top-down estimate. Work by Davidson showed that the rate of accumulation of N 2 O in the atmosphere in the late nineteenth and twentieth centuries was greater than that predicted from agricultural inputs limited to fertilizer N and biologically fixed N (Davidson, E. A. 2009 Nat. Geosci . 2 , 659\uffe2\uff80\uff93662.). However, by also including soil organic N mineralized following land-use change and NO x deposited from the atmosphere in our estimates of the reactive N entering the agricultural cycle, we have now obtained a good fit between the observed atmospheric N 2 O concentrations from 1860 to 2000 and those calculated on the basis of a 4 per cent EF for the reactive N.
", "keywords": ["2. Zero hunger", "Air Pollutants", "330", "Climate", "Nitrous Oxide", "Agriculture", "15. Life on land", "Nitrification", "01 natural sciences", "7. Clean energy", "630", "Soil", "13. Climate action", "Biofuels", "Denitrification", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1098/rstb.2011.0313"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Philosophical%20Transactions%20of%20the%20Royal%20Society%20B%3A%20Biological%20Sciences", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1098/rstb.2011.0313", "name": "item", "description": "10.1098/rstb.2011.0313", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1098/rstb.2011.0313"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2012-05-05T00:00:00Z"}}, {"id": "10.1108/00070700910992925", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:19:43Z", "type": "Journal Article", "created": "2009-10-05", "title": "A meta-analysis of the differences in environmental impacts between organic and conventional farming", "description": "PurposeThis paper aims to perform a meta\uffe2\uff80\uff90analysis of the literature comparing the environmental impacts of organic and conventional farming and linking these to differences in management practises. The studied environmental impacts are related to land use efficiency, organic matter content in the soil, nitrate and phosphate leaching to the water system, greenhouse gas emissions and biodiversity.
Design/methodology/approachThe theoretic framework uses the driver\uffe2\uff80\uff90state\uffe2\uff80\uff90response framework and literature data were analysed using meta\uffe2\uff80\uff90analysis methodology. Meta\uffe2\uff80\uff90analysis is the statistical analysis of multiple study results. Data were obtained by screening peer reviewed literature.
FindingsFrom the paper's meta\uffe2\uff80\uff90analysis it can conclude that soils in organic farming systems have on average a higher content of organic matter. It can also conclude that organic farming contributes positively to agro\uffe2\uff80\uff90biodiversity (breeds used by the farmers) and natural biodiversity (wild life). Concerning the impact of the organic farming system on nitrate and phosphorous leaching and greenhouse gas emissions the result of the analysis is not that straightforward. When expressed per production area organic farming scores better than conventional farming for these items. However, given the lower land use efficiency of organic farming in developed countries, this positive effect expressed per unit product is less pronounced or not present at all.
Original valueGiven the recent growth of organic farming and the general perception that organic farming is more environment friendly than its conventional counterpart, it is interesting to explore whether it meets the alleged benefits. By combining several studies in one analysis, the technique of meta\uffe2\uff80\uff90analysis is powerful and may allow the generation of more nuanced findings and the generalisation of those findings.
", "keywords": ["Agriculture and Food Sciences", "2. Zero hunger", "GREENHOUSE-GAS EMISSIONS", "Environmental management", "NEW-ZEALAND", "CROPPING SYSTEMS", "NITROUS-OXIDE", "SOUTHERN GERMANY", "Agriculture", "SOIL QUALITY INDICATORS", "04 agricultural and veterinary sciences", "MODELING APPROACH", "15. Life on land", "7. Clean energy", "Organic foods", "12. Responsible consumption", "Europe", "13. Climate action", "LEACHING LOSSES", "PHOSPHORUS P", "11. Sustainability", "0401 agriculture", " forestry", " and fisheries", "LONG-TERM CHANGES"], "contacts": [{"organization": "Mondelaers, Koen, Aertsens, Joris, Van Huylenbroeck, Guido,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1108/00070700910992925"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/British%20Food%20Journal", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1108/00070700910992925", "name": "item", "description": "10.1108/00070700910992925", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1108/00070700910992925"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2009-09-26T00:00:00Z"}}, {"id": "10.1111/ele.13078", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:19:54Z", "type": "Journal Article", "created": "2018-05-08", "title": "Climatic role of terrestrial ecosystem under elevated CO2: a bottom-up greenhouse gases budget", "description": "AbstractThe net balance of greenhouse gas (GHG) exchanges between terrestrial ecosystems and the atmosphere under elevated atmospheric carbon dioxide (CO2) remains poorly understood. Here, we synthesise 1655 measurements from 169 published studies to assess GHGs budget of terrestrial ecosystems under elevated CO2. We show that elevated CO2 significantly stimulates plant C pool (NPP) by 20%, soil CO2 fluxes by 24%, and methane (CH4) fluxes by 34% from rice paddies and by 12% from natural wetlands, while it slightly decreases CH4 uptake of upland soils by 3.8%. Elevated CO2 causes insignificant increases in soil nitrous oxide (N2O) fluxes (4.6%), soil organic C (4.3%) and N (3.6%) pools. The elevated CO2\uffe2\uff80\uff90induced increase in GHG emissions may decline with CO2 enrichment levels. An elevated CO2\uffe2\uff80\uff90induced rise in soil CH4 and N2O emissions (2.76 Pg CO2\uffe2\uff80\uff90equivalent year\uffe2\uff88\uff921) could negate soil C enrichment (2.42 Pg CO2 year\uffe2\uff88\uff921) or reduce mitigation potential of terrestrial net ecosystem production by as much as 69% (NEP, 3.99 Pg CO2 year\uffe2\uff88\uff921) under elevated CO2. Our analysis highlights that the capacity of terrestrial ecosystems to act as a sink to slow climate warming under elevated CO2 might have been largely offset by its induced increases in soil GHGs source strength.
", "keywords": ["0106 biological sciences", "Greenhouse Effect", "0301 basic medicine", "Nitrous Oxide", "Carbon Dioxide", "15. Life on land", "01 natural sciences", "6. Clean water", "Greenhouse Gases", "Soil", "03 medical and health sciences", "13. Climate action", "Methane", "Ecosystem"]}, "links": [{"href": "https://doi.org/10.1111/ele.13078"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Ecology%20Letters", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1111/ele.13078", "name": "item", "description": "10.1111/ele.13078", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1111/ele.13078"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2018-05-07T00:00:00Z"}}, {"id": "10.1111/gcb.12347", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:19:55Z", "type": "Journal Article", "created": "2013-08-08", "title": "Assessing The Performance Of The Photo-Acoustic Infrared Gas Monitor For Measuring Co2, N2o, And Ch4 Fluxes In Two Major Cereal Rotations", "description": "AbstractRapid, precise, and globally comparable methods for monitoring greenhouse gas (GHG) fluxes are required for accurate GHG inventories from different cropping systems and management practices. Manual gas sampling followed by gas chromatography (GC) is widely used for measuring GHG fluxes in agricultural fields, but is laborious and time\uffe2\uff80\uff90consuming. The photo\uffe2\uff80\uff90acoustic infrared gas monitoring system (PAS) with on\uffe2\uff80\uff90line gas sampling is an attractive option, although it has not been evaluated for measuring GHG fluxes in cereals in general and rice in particular. We compared N2O, CO2, and CH4 fluxes measured by GC and PAS from agricultural fields under the rice\uffe2\uff80\uff93wheat and maize\uffe2\uff80\uff93wheat systems during the wheat (winter), and maize/rice (monsoon) seasons in Haryana, India. All the PAS readings were corrected for baseline drifts over time and PAS\uffe2\uff80\uff90CH4 (PCH4) readings in flooded rice were corrected for water vapor interferences. The PCH4 readings in ambient air increased by 2.3\uffc2\uffa0ppm for every 1000\uffc2\uffa0mg\uffc2\uffa0cm\uffe2\uff88\uff923 increase in water vapor. The daily CO2, N2O, and CH4 fluxes measured by GC and PAS from the same chamber were not different in 93\uffe2\uff80\uff9398% of all the measurements made but the PAS exhibited greater precision for estimates of CO2 and N2O fluxes in wheat and maize, and lower precision for CH4 flux in rice, than GC. The seasonal GC\uffe2\uff80\uff90 and PAS\uffe2\uff80\uff90N2O (PN2O) fluxes in wheat and maize were not different but the PAS\uffe2\uff80\uff90CO2 (PCO2) flux in wheat was 14\uffe2\uff80\uff9339% higher than that of GC. In flooded rice, the seasonal PCH4 and PN2O fluxes across N levels were higher than those of GC\uffe2\uff80\uff90CH4 and GC\uffe2\uff80\uff90N2O fluxes by about 2\uffe2\uff80\uff90 and 4fold, respectively. The PAS (i) proved to be a suitable alternative to GC for N2O and CO2 flux measurements in wheat, and (ii) showed potential for obtaining accurate measurements of CH4 fluxes in flooded rice after making correction for changes in humidity.
", "keywords": ["Chromatography", " Gas", "Spectrophotometry", " Infrared", "Nitrous Oxide", "Zea mays", "01 natural sciences", "7. Clean energy", "greenhouse gases", "climate", "Triticum", "agriculture", "0105 earth and related environmental sciences", "cereals", "2. Zero hunger", "Air Pollutants", "nitrous oxide", "methane", "rice", "carbon dioxide", "Oryza", "Acoustics", "04 agricultural and veterinary sciences", "Carbon Dioxide", "monitoring", "13. Climate action", "0401 agriculture", " forestry", " and fisheries", "Methane", "Environmental Monitoring"]}, "links": [{"href": "https://doi.org/10.1111/gcb.12347"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Global%20Change%20Biology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1111/gcb.12347", "name": "item", "description": "10.1111/gcb.12347", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1111/gcb.12347"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2013-11-11T00:00:00Z"}}, {"id": "10.1111/gcb.12216", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:19:54Z", "type": "Journal Article", "created": "2013-04-04", "title": "Initial Nitrous Oxide, Carbon Dioxide, And Methane Costs Of Converting Conservation Reserve Program Grassland To Row Crops Under No-Till Vs. Conventional Tillage", "description": "AbstractAround 4.4 million\uffc2\uffa0ha of land in USDA Conservation Reserve Program (CRP) contracts will expire between 2013 and 2018 and some will likely return to crop production. No\uffe2\uff80\uff90till (NT) management offers the potential to reduce the global warming costs of CO2, CH4, and N2O emissions during CRP conversion, but to date there have been no CRP conversion tillage comparisons. In 2009, we converted portions of three 9\uffe2\uff80\uff9321\uffc2\uffa0ha CRP fields in Michigan to conventional tillage (CT) or NT soybean production and reserved a fourth field for reference. Both CO2 and N2O fluxes increased following herbicide application in all converted fields, but in the CT treatment substantial and immediate N2O and CO2 fluxes occurred after tillage. For the initial 201\uffe2\uff80\uff90day conversion period, average daily N2O fluxes (g N2O\uffe2\uff80\uff90N\uffc2\uffa0ha\uffe2\uff88\uff921\uffc2\uffa0d\uffe2\uff88\uff921) were significantly different in the order: CT (47.5\uffc2\uffa0\uffc2\uffb1\uffc2\uffa06.31, n\uffc2\uffa0=\uffc2\uffa06)\uffc2\uffa0\uffe2\uff89\uffab\uffc2\uffa0NT (16.7\uffc2\uffa0\uffc2\uffb1\uffc2\uffa02.45, n\uffc2\uffa0=\uffc2\uffa06)\uffc2\uffa0\uffe2\uff89\uffab\uffc2\uffa0reference (2.51\uffc2\uffa0\uffc2\uffb1\uffc2\uffa00.73, n\uffc2\uffa0=\uffc2\uffa04). Similarly, soil CO2 fluxes in CT were 1.2 times those in NT and 3.1 times those in the unconverted CRP reference field. All treatments were minor sinks for CH4 (\uffe2\uff88\uff920.69\uffc2\uffa0\uffc2\uffb1\uffc2\uffa00.42 to \uffe2\uff88\uff921.86\uffc2\uffa0\uffc2\uffb1\uffc2\uffa00.37\uffc2\uffa0g CH4\uffe2\uff80\uff93C\uffc2\uffa0ha\uffe2\uff88\uff921\uffc2\uffa0d\uffe2\uff88\uff921) with no significant differences among treatments. The positive global warming impact (GWI) of converted soybean fields under both CT (11.5 Mg CO2e\uffc2\uffa0ha\uffe2\uff88\uff921) and NT (2.87 Mg CO2e\uffc2\uffa0ha\uffe2\uff88\uff921) was in contrast to the negative GWI of the unconverted reference field (\uffe2\uff88\uff923.5 Mg CO2e\uffc2\uffa0ha\uffe2\uff88\uff921) with on\uffe2\uff80\uff90going greenhouse gas (GHG) mitigation. N2O contributed 39.3% and 55.0% of the GWI under CT and NT systems with the remainder contributed by CO2 (60.7% and 45.0%, respectively). Including foregone mitigation, we conclude that NT management can reduce GHG costs by ~60% compared to CT during initial CRP conversion.
", "keywords": ["Crops", " Agricultural", "Greenhouse Effect", "2. Zero hunger", "Conservation of Natural Resources", "Michigan", "Nitrous Oxide", "Agriculture", "04 agricultural and veterinary sciences", "Carbon Dioxide", "15. Life on land", "Primary Research Articles", "6. Clean water", "13. Climate action", "0401 agriculture", " forestry", " and fisheries", "Methane"]}, "links": [{"href": "https://doi.org/10.1111/gcb.12216"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Global%20Change%20Biology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1111/gcb.12216", "name": "item", "description": "10.1111/gcb.12216", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1111/gcb.12216"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2013-05-02T00:00:00Z"}}, {"id": "10.1111/gcb.12810", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:19:55Z", "type": "Journal Article", "created": "2014-11-18", "title": "Effects Of Elevated Ozone Concentration On Ch4 And N2o Emission From Paddy Soil Under Fully Open-Air Field Conditions", "description": "AbstractWe investigated the effects of elevated ozone concentration (E\uffe2\uff80\uff90O3) on CH4 and N2O emission from paddies with two rice cultivars: an inbred Indica cultivar Yangdao 6 (YD6) and a hybrid one II\uffe2\uff80\uff90you 084 (IIY084), under fully open\uffe2\uff80\uff90air field conditions in China. A mean 26.7% enhancement of ozone concentration above the ambient level (A\uffe2\uff80\uff90O3) significantly reduced CH4 emission at tillering and flowering stages leading to a reduction of seasonal integral CH4 emission by 29.6% on average across the two cultivars. The reduced CH4 emission is associated with O3\uffe2\uff80\uff90induced reduction in the whole\uffe2\uff80\uff90plant biomass (\uffe2\uff88\uff9213.2%), root biomass (\uffe2\uff88\uff9234.7%), and maximum tiller number (\uffe2\uff88\uff9210.3%), all of which curbed the carbon supply for belowground CH4 production and its release from submerged soil to atmosphere. Although no significant difference was detected between the cultivars in the CH4 emission response to E\uffe2\uff80\uff90O3, a larger decrease in CH4 emission with IIY084 (\uffe2\uff88\uff9233.2%) than that with YD6 (\uffe2\uff88\uff927.0%) was observed at tillering stage, which may be due to the larger reduction in tiller number in IIY084 by E\uffe2\uff80\uff90O3. Additionally, E\uffe2\uff80\uff90O3 reduced seasonal mean NOx flux by 5.7% and 11.8% with IIY084 and YD6, respectively, but the effects were not significant statistically. We found that the relative response of CH4 emission to E\uffe2\uff80\uff90O3 was not significantly different from those reported in open\uffe2\uff80\uff90top chamber experiments. This study has thus confirmed that increasing ozone concentration would mitigate the global warming potential of CH4 and suggested consideration of the feedback mechanism between ozone and its precursor emission into the projection of future ozone effects on terrestrial ecosystem.
", "keywords": ["2. Zero hunger", "Air Pollutants", "China", "Nitrous Oxide", "Agriculture", "Oryza", "04 agricultural and veterinary sciences", "15. Life on land", "01 natural sciences", "Soil", "Ozone", "13. Climate action", "8. Economic growth", "0401 agriculture", " forestry", " and fisheries", "Methane", "Ecosystem", "0105 earth and related environmental sciences"], "contacts": [{"organization": "Gang Liu, Haoye Tang, Haoye Tang, Kazuhiko Kobayashi, Jianguo Zhu,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1111/gcb.12810"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Global%20Change%20Biology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1111/gcb.12810", "name": "item", "description": "10.1111/gcb.12810", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1111/gcb.12810"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2014-12-23T00:00:00Z"}}, {"id": "10.1111/gcb.16042", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:19:58Z", "type": "Journal Article", "created": "2021-12-19", "title": "Stimulation of ammonia oxidizer and denitrifier abundances by nitrogen loading: Poor predictability for increased soil N2O emission", "description": "AbstractUnprecedented nitrogen (N) inputs into terrestrial ecosystems have profoundly altered soil N cycling. Ammonia oxidizers and denitrifiers are the main producers of nitrous oxide (N2O), but it remains unclear how ammonia oxidizer and denitrifier abundances will respond to N loading and whether their responses can predict N\uffe2\uff80\uff90induced changes in soil N2O emission. By synthesizing 101 field studies worldwide, we showed that N loading significantly increased ammonia oxidizer abundance by 107% and denitrifier abundance by 45%. The increases in both ammonia oxidizer and denitrifier abundances were primarily explained by N loading form, and more specifically, organic N loading had stronger effects on their abundances than mineral N loading. Nitrogen loading increased soil N2O emission by 261%, whereas there was no clear relationship between changes in soil N2O emission and shifts in ammonia oxidizer and denitrifier abundances. Our field\uffe2\uff80\uff90based results challenge the laboratory\uffe2\uff80\uff90based hypothesis that increased ammonia oxidizer and denitrifier abundances by N loading would directly cause higher soil N2O emission. Instead, key abiotic factors (mean annual precipitation, soil pH, soil C:N ratio, and ecosystem type) explained N\uffe2\uff80\uff90induced changes in soil N2O emission. Altogether, these findings highlight the need for considering the roles of key abiotic factors in regulating soil N transformations under N loading to better understand the microbially mediated soil N2O emission.Energy production from bioenergy crops may significantly reduce greenhouse gas (GHG) emissions through substitution of fossil fuels. Biochar amendment to soil may further decrease the net climate forcing of bioenergy crop production, however, this has not yet been assessed under field conditions. Significant suppression of soil nitrous oxide (N2O) and carbon dioxide (CO2) emissions following biochar amendment has been demonstrated in short\uffe2\uff80\uff90term laboratory incubations by a number of authors, yet evidence from long\uffe2\uff80\uff90term field trials has been contradictory. This study investigated whether biochar amendment could suppress soilGHGemissions under field and controlled conditions in aMiscanthus\uffc2\uffa0\uffc3\uff97\uffc2\uffa0Giganteuscrop and whether suppression would be sustained during the first 2\uffc2\uffa0years following amendment. In the field, biochar amendment suppressed soilCO2emissions by 33% and annual net soilCO2equivalent (eq.) emissions (CO2,N2Oand methane,CH4) by 37% over 2\uffc2\uffa0years. In the laboratory, under controlled temperature and equalised gravimetric water content, biochar amendment suppressed soilCO2emissions by 53% and net soilCO2eq. emissions by 55%. SoilN2Oemissions were not significantly suppressed with biochar amendment, although they were generally low. SoilCH4fluxes were below minimum detectable limits in both experiments. These findings demonstrate that biochar amendment has the potential to suppress net soilCO2eq. emissions in bioenergy crop systems for up to 2\uffc2\uffa0years after addition, primarily through reducedCO2emissions. Suppression of soilCO2emissions may be due to a combined effect of reduced enzymatic activity, the increased carbon\uffe2\uff80\uff90use efficiency from the co\uffe2\uff80\uff90location of soil microbes, soil organic matter and nutrients and the precipitation ofCO2onto the biochar surface. We conclude that hardwood biochar has the potential to improve theGHGbalance of bioenergy crops through reductions in net soilCO2eq. emissions.
", "keywords": ["2. Zero hunger", "nitrous oxide", "carbon dioxide", "Miscanthus", "04 agricultural and veterinary sciences", "15. Life on land", "7. Clean energy", "6. Clean water", "soil", "12. Responsible consumption", "climate change", "13. Climate action", "8. Economic growth", "0401 agriculture", " forestry", " and fisheries", "biochar", "charcoal"]}, "links": [{"href": "https://doi.org/10.1111/gcbb.12052"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/GCB%20Bioenergy", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1111/gcbb.12052", "name": "item", "description": "10.1111/gcbb.12052", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1111/gcbb.12052"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2013-03-05T00:00:00Z"}}, {"id": "10.1111/j.1365-2486.2010.02349.x", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:20:09Z", "type": "Journal Article", "created": "2010-10-05", "title": "Nonlinear Nitrous Oxide (N2o) Response To Nitrogen Fertilizer In On-Farm Corn Crops Of The Us Midwest", "description": "AbstractRow\uffe2\uff80\uff90crop agriculture is a major source of nitrous oxide (N2O) globally, and results from recent field experiments suggest that significant decreases in N2O emissions may be possible by decreasing nitrogen (N) fertilizer inputs without affecting economic return from grain yield. We tested this hypothesis on five commercially farmed fields in Michigan, USA planted with corn in 2007 and 2008. Six rates of N fertilizer (0\uffe2\uff80\uff93225\uffe2\uff80\uff83kg\uffe2\uff80\uff83N\uffe2\uff80\uff83ha\uffe2\uff88\uff921) were broadcast and incorporated before planting, as per local practice. Across all sites and years, increases in N2O flux were best described by a nonlinear, exponentially increasing response to increasing N rate. N2O emission factors per unit of N applied ranged from 0.6% to 1.5% and increased with increasing N application across all sites and years, especially at N rates above those required for maximum crop yield. At the two N fertilizer rates above those recommended for maximum economic return (135\uffe2\uff80\uff83kg\uffe2\uff80\uff83N\uffe2\uff80\uff83ha\uffe2\uff88\uff921), average N2O fluxes were 43% (18\uffe2\uff80\uff83g\uffe2\uff80\uff83N2O\uffe2\uff80\uff93N\uffe2\uff80\uff83ha\uffe2\uff88\uff921\uffe2\uff80\uff83day\uffe2\uff88\uff921) and 115% (26\uffe2\uff80\uff83g\uffe2\uff80\uff83N2O\uffe2\uff80\uff93N\uffe2\uff80\uff83ha\uffe2\uff88\uff921\uffe2\uff80\uff83day\uffe2\uff88\uff921) higher than were fluxes at the recommended rate, respectively. The maximum return to nitrogen rate of 154\uffe2\uff80\uff83kg\uffe2\uff80\uff83N\uffe2\uff80\uff83ha\uffe2\uff88\uff921yielded an average 8.3\uffe2\uff80\uff83Mg\uffe2\uff80\uff83grain\uffe2\uff80\uff83ha\uffe2\uff88\uff921. Our study shows the potential to lower agricultural N2O fluxes within a range of N fertilization that does not affect economic return from grain yield.
", "keywords": ["2. Zero hunger", "nitrous oxide", "N2O", "emission reduction", "04 agricultural and veterinary sciences", "15. Life on land", "maize", "630", "corn", "greenhouse gas", "13. Climate action", "0401 agriculture", " forestry", " and fisheries", "nitrogen fertilizer", "agriculture"]}, "links": [{"href": "https://doi.org/10.1111/j.1365-2486.2010.02349.x"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Global%20Change%20Biology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1111/j.1365-2486.2010.02349.x", "name": "item", "description": "10.1111/j.1365-2486.2010.02349.x", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1111/j.1365-2486.2010.02349.x"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2010-11-22T00:00:00Z"}}, {"id": "10.1111/j.1757-1707.2011.01116.x", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:20:21Z", "type": "Journal Article", "created": "2011-09-05", "title": "Land-Use Change To Bioenergy Production In Europe: Implications For The Greenhouse Gas Balance And Soil Carbon", "description": "AbstractBioenergy from crops is expected to make a considerable contribution to climate change mitigation. However, bioenergy is not necessarily carbon neutral because emissions of CO2, N2O and CH4 during crop production may reduce or completely counterbalance CO2 savings of the substituted fossil fuels. These greenhouse gases (GHGs) need to be included into the carbon footprint calculation of different bioenergy crops under a range of soil conditions and management practices. This review compiles existing knowledge on agronomic and environmental constraints and GHG balances of the major European bioenergy crops, although it focuses on dedicated perennial crops such as Miscanthus and short rotation coppice species. Such second\uffe2\uff80\uff90generation crops account for only 3% of the current European bioenergy production, but field data suggest they emit 40% to >99% less N2O than conventional annual crops. This is a result of lower fertilizer requirements as well as a higher N\uffe2\uff80\uff90use efficiency, due to effective N\uffe2\uff80\uff90recycling. Perennial energy crops have the potential to sequester additional carbon in soil biomass if established on former cropland (0.44\uffc2\uffa0Mg soil C ha\uffe2\uff88\uff921\uffc2\uffa0yr\uffe2\uff88\uff921 for poplar and willow and 0.66\uffc2\uffa0Mg soil C ha\uffe2\uff88\uff921\uffc2\uffa0yr\uffe2\uff88\uff921 for Miscanthus). However, there was no positive or even negative effects on the C balance if energy crops are established on former grassland. Increased bioenergy production may also result in direct and indirect land\uffe2\uff80\uff90use changes with potential high C losses when native vegetation is converted to annual crops. Although dedicated perennial energy crops have a high potential to improve the GHG balance of bioenergy production, several agronomic and economic constraints still have to be overcome.
", "keywords": ["carbon footprint", "short rotation coppice", "0211 other engineering and technologies", "Miscanthus", "02 engineering and technology", "7. Clean energy", "12. Responsible consumption", "Carbon debt", "CARBON CYCLE; CARBON SEQUESTRATION; ENVIRONMENTAL EFFECTS; BIOENERGY", "Biofuel", "Land management", "0202 electrical engineering", " electronic engineering", " information engineering", "carbon debt", "2. Zero hunger", "Nitrous oxide", "nitrous oxide", "Soil organic carbon", "methane", "land management", "15. Life on land", "Carbon footprint", "soil organic carbon", "13. Climate action", "biofuel", "Short rotation coppice", "Methane"]}, "links": [{"href": "https://cris.unibo.it/bitstream/11585/117133/1/117133%20j.1757-1707.2011.01116.x.pdf"}, {"href": "https://doi.org/10.1111/j.1757-1707.2011.01116.x"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/GCB%20Bioenergy", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1111/j.1757-1707.2011.01116.x", "name": "item", "description": "10.1111/j.1757-1707.2011.01116.x", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1111/j.1757-1707.2011.01116.x"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2011-09-04T00:00:00Z"}}, {"id": "10.1111/j.1600-0889.2007.00304.x", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:20:18Z", "type": "Journal Article", "created": "2012-12-17", "title": "Fluxes And Production Of N2o, Co2 And Ch4 In Boreal Agricultural Soil During Winter As Affected By Snow Cover", "description": "Agricultural soils are important source of atmospheric nitrous oxide (N2O) and a considerable part of annual N2O release occurs during the cold season in the boreal region. According to recent studies N2O can be produced in soils at low temperatures, below 0 \u00b0C. We studied if removal of the snowcover lowers soil temperatures and whether this would affect flux rates of N2O, carbon dioxide (CO2) and methane (CH4) from an agricultural soil in eastern Finland. Gas flux rates and concentrations in soil were measured from study plots with undisturbed snow cover and from plots with snow removed. This experiment simulates changes in the soil thermal conditions with less snowfall. Plots without snow had even 15 \u00b0C lower temperature at the depth of 5 cm and they had higher N2O emissions during soil freezing and thawing. However, there were only minor changes in CH4 or CO2 flux rates after removal of snow over the cold season. N2O and CO2 accumulated in the soil during winter and were then released rapidly during thawing in spring. CH4 concentrations in the soil remained lower than the atmospheric levels during winter and subsequently increased to the ambient levels after thawing. Future climate scenarios suggest possible decline in snowfall in northern Europe resulting in lower soil temperatures. This could lead to higher N2O emissions from boreal agricultural soils.DOI: 10.1111/j.1600-0889.2007.00304.x", "keywords": ["hiilidioksidi", "2. Zero hunger", "ilokaasu", "nitrous oxide", "methane", "0207 environmental engineering", "carbon dioxide", "snow cover", "04 agricultural and veterinary sciences", "02 engineering and technology", "15. Life on land", "maatalousmaa", "metaani", "01 natural sciences", "630", "kasvihuonekaasut", "13. Climate action", "greenhouse gases", "0401 agriculture", " forestry", " and fisheries", "agricultural soils", "lumipeite", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1111/j.1600-0889.2007.00304.x"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Tellus%20B", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1111/j.1600-0889.2007.00304.x", "name": "item", "description": "10.1111/j.1600-0889.2007.00304.x", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1111/j.1600-0889.2007.00304.x"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2007-01-01T00:00:00Z"}}, {"id": "10.1111/j.1757-1707.2011.01136.x", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:20:21Z", "type": "Journal Article", "created": "2011-10-27", "title": "How Do Soil Emissions Of N2o, Ch4 And Co2 From Perennial Bioenergy Crops Differ From Arable Annual Crops?", "description": "AbstractIt is important to demonstrate that replacing fossil fuel with bioenergy crops can reduce the national greenhouse gas (GHG) footprint. We compared field emissions of nitrous oxide (N2O), methane (CH4) and soil respiration rates from the C4 grass Miscanthus\uffc2\uffa0\uffc3\uff97\uffc2\uffa0giganteus and willow (salix) with emissions from annual arable crops grown for food production. The study was carried out in NE England on adjacent fields of willow, Miscanthus, wheat (Triticum aetivum) and oilseed rape (Brassica napus). N2O, CH4 fluxes and soil respiration rates were measured monthly using static chambers from June 2008 to November 2010. Net ecosystem exchange (NEE) of carbon dioxide (CO2) was measured by eddy covariance on Miscanthus from May 2008 and on willow from October 2009 until November 2010. The N2O fluxes were significantly smaller from the bioenergy crops than that of the annual crops. Average fluxes were 8 and 32\uffc2\uffa0\uffce\uffbcg\uffc2\uffa0m\uffe2\uff88\uff922\uffc2\uffa0h\uffe2\uff88\uff921 N2O\uffe2\uff80\uff90N from wheat and oilseed rape, and 4 and 0.2\uffc2\uffa0\uffce\uffbcg\uffc2\uffa0m\uffe2\uff88\uff922\uffc2\uffa0h\uffe2\uff88\uff921 N2O\uffe2\uff80\uff90N from Miscanthus and willow, respectively. Soil CH4 fluxes were negligible for all crops and soil respiration rates were similar for all crops. NEE of CO2 was larger for Miscanthus (\uffe2\uff88\uff92770\uffc2\uffa0g\uffc2\uffa0C\uffc2\uffa0m\uffe2\uff88\uff922\uffc2\uffa0h\uffe2\uff88\uff921) than willow (\uffe2\uff88\uff92602\uffc2\uffa0g\uffc2\uffa0C\uffc2\uffa0m\uffe2\uff88\uff922\uffc2\uffa0h\uffe2\uff88\uff921) in the growing season of 2010. N2O emissions from Miscanthus and willow were lower than for the wheat and oilseed rape which is most likely a result of regular fertilizer application and tillage in the annual arable cropping systems. Application of 15N\uffe2\uff80\uff90labelled fertilizer to Miscanthus and oil seed rape resulted in a fertilizer\uffe2\uff80\uff90induced increase in N2O emission in both crops. Denitrification rates (N2O\uffc2\uffa0+\uffc2\uffa0N2) were similar for soil under Miscanthus and oilseed rape. Thus, perennial bioenergy crops only emit less GHGs than annual crops when they receive no or very low rates of N fertilizer.
", "keywords": ["2. Zero hunger", "willow", "nitrous oxide", "short rotation coppice", "methane", "Miscanthus", "04 agricultural and veterinary sciences", "bioenergy", "15. Life on land", "soil respiration", "7. Clean energy", "01 natural sciences", "6. Clean water", "13. Climate action", "0401 agriculture", " forestry", " and fisheries", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1111/j.1757-1707.2011.01136.x"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/GCB%20Bioenergy", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1111/j.1757-1707.2011.01136.x", "name": "item", "description": "10.1111/j.1757-1707.2011.01136.x", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1111/j.1757-1707.2011.01136.x"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2011-10-27T00:00:00Z"}}, {"id": "10.1111/nph.17310", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:20:24Z", "type": "Journal Article", "created": "2021-05-17", "title": "Towards reliable measurements of trace gas fluxes at plant surfaces", "keywords": ["0106 biological sciences", "Rainforest", "Nitrous Oxide", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "Methane", "Reunion", "01 natural sciences", "Trees"]}, "links": [{"href": "https://nph.onlinelibrary.wiley.com/doi/pdf/10.1111/nph.17310"}, {"href": "https://doi.org/10.1111/nph.17310"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/New%20Phytologist", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1111/nph.17310", "name": "item", "description": "10.1111/nph.17310", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1111/nph.17310"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2021-05-17T00:00:00Z"}}, {"id": "10.1111/nph.17352", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:20:24Z", "type": "Journal Article", "created": "2021-03-19", "title": "Simultaneous tree stem and soil greenhouse gas (CO2, CH4, N2O) flux measurements: a novel design for continuous monitoring towards improving flux estimates and temporal resolution", "description": "Summary
Tree stems and soils can act as sources and sinks for the greenhouse gases (GHG) carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O). Since both uptake and emission capacities can be large, especially in tropical rainforests, accurate assessments of the magnitudes and temporal variations of stem and soil GHG fluxes are required.
We designed a new flexible stem chamber system for continuously measuring GHG fluxes in a French Guianese rainforest. Here, we describe this new system, which is connected to an automated soil GHG flux system, and discuss measurement uncertainty and potential error sources.
In line with findings for soil GHG flux estimates, we demonstrated that lengthening the stem chamber closure time was required for accurate estimates of tree stem CH4 and N2O flux but not tree stem CO2 flux. The instrumented stem was a net source of CO2 and CH4 and a weak sink of N2O.
Our experimental setup operated successfully in situ and provided continuous tree and soil GHG measurements at a high temporal resolution over an 11\uffe2\uff80\uff90month period. This automated system is a major step forward in the measurement of GHG fluxes in stems and the atmosphere concurrently with soil GHG fluxes in tropical forest ecosystems.
Recent studies have shown that stem fluxes, although highly variable among trees, can alter the strength of the methane (CH4) sink or nitrous oxide (N2O) source in some forests, but the patterns and magnitudes of these fluxes remain unclear. This study investigated the drivers of subdaily and seasonal variations in stem and soil CH4, N2O and carbon dioxide (CO2) fluxes.
CH4, N2O and CO2 fluxes were measured continuously for 19\uffe2\uff80\uff89months in individual stems of two tree species, Eperua falcata (Aubl.) and Lecythis poiteaui (O. Berg), and surrounding soils using an automated chamber system in an upland tropical forest. Subdaily variations in these fluxes were related to environmental and stem physiological (sap flow and stem diameter variations) measurements under contrasting soil water conditions.
The results showed that physiological and climatic drivers only partially explained the subdaily flux variations. Stem CH4 and CO2 emissions and N2O uptake varied with soil water content, time of day and between individuals. Stem fluxes decoupled from soil fluxes.
Our study contributes to understanding the regulation of stem greenhouse gas fluxes. It suggests that additional variables (e.g. internal gas concentrations, wood\uffe2\uff80\uff90colonising microorganisms, wood density and anatomy) may account for the remaining unexplained variability in stem fluxes, highlighting the need for further studies.
Earthworm activity is known to increase emissions of nitrous oxide (N 2 O) from arable soils. Earthworm gut, casts, and burrows have exhibited higher denitrification activities than the bulk soil, implicating priming of denitrifying organisms as a possible mechanism for this effect. Furthermore, the earthworm feeding strategy may drive N 2 O emissions, as it determines access to fresh organic matter for denitrification. Here, we determined whether interactions between earthworm feeding strategy and the soil denitrifier community can predict N 2 O emissions from the soil. We set up a 90-day mesocosm experiment in which 15 N-labeled maize ( Zea mays L.) was either mixed in or applied on top of the soil in the presence or absence of the epigeic earthworm Lumbricus rubellus and/or the endogeic earthworm Aporrectodea caliginosa . We measured N 2 O fluxes and tested the bulk soil for denitrification enzyme activity and the abundance of 16S rRNA and denitrifier genes nirS and nosZ through real-time quantitative PCR. Compared to the control, L. rubellus increased denitrification enzyme activity and N 2 O emissions on days 21 and 90 (day 21, P = 0.034 and P = 0.002, respectively; day 90, P = 0.001 and P = 0.007, respectively), as well as cumulative N 2 O emissions (76%; P = 0.014). A. caliginosa activity led to a transient increase of N 2 O emissions on days 8 to 18 of the experiment. Abundance of nosZ was significantly increased (100%) on day 90 in the treatment mixture containing L. rubellus alone. We conclude that L. rubellus increased cumulative N 2 O emissions by affecting denitrifier community activity via incorporation of fresh residue into the soil and supplying a steady, labile carbon source. ", "keywords": ["2. Zero hunger", "agricultural soil", "Bacteria", "nosz genes", "carbon", "Nitrous Oxide", "n2o emission", "n2o-producing microorganisms", "04 agricultural and veterinary sciences", "15. Life on land", "pcr data", "microbial activity", "Animal Feed", "Zea mays", "lumbricus-rubellus", "Soil", "Denitrification", "Animals", "0401 agriculture", " forestry", " and fisheries", "community composition", "Oligochaeta", "organic-matter"]}, "links": [{"href": "https://doi.org/10.1128/aem.00033-11"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Applied%20and%20Environmental%20Microbiology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1128/aem.00033-11", "name": "item", "description": "10.1128/aem.00033-11", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1128/aem.00033-11"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2011-06-15T00:00:00Z"}}, {"id": "10.1128/aem.65.8.3599-3604.1999", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:20:31Z", "type": "Journal Article", "created": "2019-12-19", "title": "Evidence For Involvement Of Gut-Associated Denitrifying Bacteria In Emission Of Nitrous Oxide (N2o) By Earthworms Obtained From Garden And Forest Soils", "description": "ABSTRACTEarthworms (Aporrectodea caliginosa,Lumbricus rubellus, andOctolasion lacteum) obtained from nitrous oxide (N2O)-emitting garden soils emitted 0.14 to 0.87 nmol of N2O h\uffe2\uff88\uff921g (fresh weight)\uffe2\uff88\uff921under in vivo conditions.L. rubellusobtained from N2O-emitting forest soil also emitted N2O, which confirmed previous observations (G. R. Karsten and H. L. Drake, Appl. Environ. Microbiol. 63:1878\uffe2\uff80\uff931882, 1997). In contrast, commercially obtainedLumbricus terrestrisdid not emit N2O; however, such worms emitted N2O when they were fed (i.e., preincubated in) garden soils.A. caliginosa,L. rubellus, andO. lacteumsubstantially increased the rates of N2O emission of garden soil columns and microcosms. Extrapolation of the data to in situ conditions indicated that N2O emission by earthworms accounted for approximately 33% of the N2O emitted by garden soils. In vivo emission of N2O by earthworms obtained from both garden and forest soils was greatly stimulated when worms were moistened with sterile solutions of nitrate or nitrite; in contrast, ammonium did not stimulate in vivo emission of N2O. In the presence of nitrate, acetylene increased the N2O emission rates of earthworms; in contrast, in the presence of nitrite, acetylene had little or no effect on emission of N2O. In vivo emission of N2O decreased by 80% when earthworms were preincubated in soil supplemented with streptomycin and tetracycline. On a fresh weight basis, the rates of N2O emission of dissected earthworm gut sections were substantially higher than the rates of N2O emission of dissected worms lacking gut sections, indicating that N2O production occurred in the gut rather than on the worm surface. In contrast to living earthworms and gut sections that produced N2O under oxic conditions (i.e., in the presence of air), fresh casts (feces) from N2O-emitting earthworms produced N2O only under anoxic conditions. Collectively, these results indicate that gut-associated denitrifying bacteria are responsible for the in vivo emission of N2O by earthworms and contribute to the N2O that is emitted from certain terrestrial ecosystems.
", "keywords": ["2. Zero hunger", "0301 basic medicine", "0303 health sciences", "Bacteria", "Acetylene", "Nitrous Oxide", "15. Life on land", "Anti-Bacterial Agents", "Oxygen", "Soil", "03 medical and health sciences", "Animals", "Salts", "Oligochaeta", "Digestive System", "Ecosystem"], "contacts": [{"organization": "Martina Schmittroth, Carola Matthies, Anja Grie\u00dfhammer, Harold L. Drake,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1128/aem.65.8.3599-3604.1999"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Applied%20and%20Environmental%20Microbiology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1128/aem.65.8.3599-3604.1999", "name": "item", "description": "10.1128/aem.65.8.3599-3604.1999", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1128/aem.65.8.3599-3604.1999"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "1999-08-01T00:00:00Z"}}, {"id": "10.1186/s43591-021-00004-0", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:20:43Z", "type": "Journal Article", "created": "2021-03-29", "title": "Microplastic fibers affect dynamics and intensity of CO2 and N2O fluxes from soil differently", "description": "AbstractMicroplastics may affect soil ecosystem functioning in critical ways, with previously documented effects including changes in soil structure and water dynamics; this suggests that microbial populations and the processes they mediate could also be affected. Given the importance for global carbon and nitrogen cycle and greenhouse warming potential, we here experimentally examined potential effects of plastic microfiber additions on CO2 and N2O greenhouse gas fluxes. We carried out a fully factorial laboratory experiment with the factors presence of microplastic fibers (0.4% w/w) and addition of urea fertilizer (100\uffe2\uff80\uff89mg\uffe2\uff80\uff89N\uffe2\uff80\uff89kg\uffe2\uff88\uff92\uffe2\uff80\uff891) using one target soil. The conditions in an intensively N-fertilized arable soil were simulated by adding biogas digestate at the beginning of the incubation to all samples. We continuously monitored CO2 and N2O emissions from soil before and after urea application using a custom-built flow-through steady-state system, and we assessed soil properties, including soil structure. Microplastics affected soil properties, notably increasing soil aggregate water-stability and pneumatic conductivity, and caused changes in the dynamics and overall level of emission of both gases, but in opposite directions: overall fluxes of CO2 were increased by microplastic presence, whereas N2O emission were decreased, a pattern that was intensified following urea addition. This divergent response is explained by effects of microplastic on soil structure, with the increased air permeability likely improving O2 supply: this will have stimulated CO2 production, since mineralization benefits from better aeration. Increased O2 would at the same time have inhibited denitrification, a process contributing to N2O emissions, thus likely explaining the decrease in the latter. Our results clearly suggest that microplastic consequences for greenhouse gas emissions should become an integral part of future impact assessments, and that to understand such responses, soil structure should be assessed.
", "keywords": ["2. Zero hunger", "Nitrous oxide", "500", "500 Naturwissenschaften und Mathematik::500 Naturwissenschaften::500 Naturwissenschaften und Mathematik", "15. Life on land", "Greenhouse gas", "01 natural sciences", "7. Clean energy", "6. Clean water", "12. Responsible consumption", "Microplastic fibers", "13. Climate action", "Carbon dioxide", " soil structure", "0105 earth and related environmental sciences"]}, "links": [{"href": "http://link.springer.com/content/pdf/10.1186/s43591-021-00004-0.pdf"}, {"href": "https://doi.org/10.1186/s43591-021-00004-0"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Microplastics%20and%20Nanoplastics", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1186/s43591-021-00004-0", "name": "item", "description": "10.1186/s43591-021-00004-0", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1186/s43591-021-00004-0"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2020-09-21T00:00:00Z"}}], "links": [{"rel": "self", "type": "application/geo+json", "title": "This document as GeoJSON", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?facets=true&offset=50&soil_chemical_properties=nitrous+oxide&f=json", "hreflang": "en-US"}, {"rel": "alternate", "type": "text/html", "title": "This document as HTML", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?facets=true&offset=50&soil_chemical_properties=nitrous+oxide&f=html", "hreflang": "en-US"}, {"rel": "collection", "type": "application/json", "title": "Collection URL", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main", "hreflang": "en-US"}, {"type": "application/geo+json", "rel": "prev", "title": "items (prev)", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?facets=true&soil_chemical_properties=nitrous+oxide&offset=0", "hreflang": "en-US"}, {"rel": "next", "type": "application/geo+json", "title": "items (next)", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?facets=true&soil_chemical_properties=nitrous+oxide&offset=100", "hreflang": "en-US"}], "numberMatched": 190, "numberReturned": 50, "distributedFeatures": [], "timeStamp": "2026-04-04T15:08:24.349500Z"}