{"type": "FeatureCollection", "features": [{"id": "10.1016/j.envpol.2013.01.040", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-26T16:15:50Z", "type": "Journal Article", "created": "2013-02-20", "title": "Greenhouse Gas Emissions From A Wheat-Maize Double Cropping System With Different Nitrogen Fertilization Regimes", "description": "Here, we report on a two-years field experiment aimed at the quantification of the emissions of nitrous oxide (N2O) and methane (CH4) from the dominant wheat-maize double cropping system in North China Plain. The experiment had 6 different fertilization strategies, including a control treatment, recommended fertilization, with and without straw and manure applications, and nitrification inhibitor and slow release urea. Application of N fertilizer slightly decreased CH4 uptake by soil. Direct N2O emissions derived from recommended urea application was 0.39% of the annual urea-N input. Both straw and manure had relatively low N2O emissions factors. Slow release urea had a relatively high emission factor. Addition of nitrification inhibitor reduced N2O emission by 55%. We conclude that use of nitrification inhibitors is a promising strategy for N2O mitigation for the intensive wheat-maize double cropping systems.", "keywords": ["Greenhouse Effect", "China", "oxide emissions", "Nitrogen Dioxide", "organic-carbon", "n2o emissions", "Zea mays", "01 natural sciences", "field experiments", "12. Responsible consumption", "Soil", "calcareous soil", "Air Pollution", "Fertilizers", "Triticum", "0105 earth and related environmental sciences", "2. Zero hunger", "Air Pollutants", "north china plain", "Agriculture", "temperate forest soils", "04 agricultural and veterinary sciences", "15. Life on land", "13. Climate action", "nitrification inhibitor", "0401 agriculture", " forestry", " and fisheries", "agricultural soils", "3", "4-dimethylpyrazole phosphate dmpp", "Methane", "Environmental Monitoring"]}, "links": [{"href": "https://doi.org/10.1016/j.envpol.2013.01.040"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Environmental%20Pollution", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.envpol.2013.01.040", "name": "item", "description": "10.1016/j.envpol.2013.01.040", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.envpol.2013.01.040"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2013-05-01T00:00:00Z"}}, {"id": "10.1111/ejss.70041", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-07-26T16:18:31Z", "type": "Journal Article", "created": "2025-01-28", "title": "Coupling Infrared Isotopic Gas Analysis and Thermal Ramped Analysis to Characterise Soil Organic and Inorganic Carbon", "description": "ABSTRACT

Studying the soil organic and inorganic carbon (SOC and SIC) dynamics is essential to assess the carbon (C) sequestration potential of calcareous soils. Isotopic signatures (\uffce\uffb4 13 C) are used to assess the C origin of SOC or SIC. However, as measuring SOC and SIC contents, measuring \uffce\uffb4 13 C SOC and \uffce\uffb4 13 C SIC on a non\uffe2\uff80\uff90pretreated aliquot remains a challenge. Thermal analyses, like the Rock\uffe2\uff80\uff90Eval (RE) analysis, are promising to quantify SOC and SIC in a single analysis, but, to our knowledge, no development was conducted to assess \uffce\uffb4 13 C SOC and \uffce\uffb4 13 C SIC . We coupled a RE device to an isotopic gas analyser (Picarro) to continuously measure \uffce\uffb4 13 C CO2 and approach \uffce\uffb4 13 C SOC and \uffce\uffb4 13 C SIC . We hypothesised that different carbonate mineralogies and/or crystal sizes in SIC involve fluctuations of the \uffce\uffb4 13 C CO2 . Two calcareous soils, a lithogenic (calcite) and a biogenic (snail shell) carbonate, and five calcite/shell mixes were analysed with the RE\uffe2\uff80\uff90Picarro setup. Two distinct \uffce\uffb4 13 C CO2 values were obtained before and after 650\uffc2\uffb0C and were consistent with the \uffce\uffb4 13 C SOC and \uffce\uffb4 13 C SIC obtained by EA\uffe2\uff80\uff90IRMS. The fluctuations of \uffce\uffb4 13 C CO2 above 650\uffc2\uffb0C were higher with calcite/shell mixes than with pure carbonates. A \uffce\uffb4 13 C CO2 fluctuation >\uffe2\uff80\uff89\uffc2\uffb1\uffe2\uff80\uff890.2\uffe2\uff80\uffb0 could be a pertinent indicator to detect mixes of carbonate with different \uffce\uffb4 13 C in soils. The RE\uffe2\uff80\uff90Picarro setup is promising to assess SOC and SIC contents, \uffce\uffb4 13 C SOC and \uffce\uffb4 13 C SIC and detect mixes of carbonate with different origin on a non\uffe2\uff80\uff90pretreated aliquot. Development is needed (i) on more soil and carbonate samples and (ii) to improve the precision and accuracy of the RE\uffe2\uff80\uff90Picarro setup.