{"type": "FeatureCollection", "features": [{"id": "10.1007/s10342-008-0203-0", "type": "Feature", "geometry": null, "properties": {"license": "Closed Access", "updated": "2026-04-04T16:14:51Z", "type": "Journal Article", "created": "2008-04-08", "title": "Seedling Growth Response Of Two Tropical Tree Species To Nitrogen Deposition In Southern China", "description": "Seedling growth response of two tropical tree species (Schima superba and Cryptocarya concinna) to simulated N deposition was studied during a period of 11\u00a0months. One-year-old seedlings were grown in forest soil treated with N as NH4NO3 at Control\u2013no N addition, N5\u20135, N10\u201310, N15\u201315, and N30\u201330\u00a0g N m\u22122\u00a0year\u22121. The objective was to examine the effects of N addition on seedling growth and compare this effect between the two tropical tree species of different species-N-requirement. Results showed that both species responded significantly to N addition and exhibited positive effect to lower rate of N addition and negative effect to higher rate of N addition on growth parameters (height and stem base diameter, biomass production, and net photosynthetic rate). The highest values were observed in the N10 plots for S. superba and in the N15 plots for C. concinna, but the lowest values were observed in the N30 plots for both species. However, the reduction in the N30 plots was more pronounced for S. superba than for C. concinna relative to the control plots. Our findings suggest that response of seedling growth of tropical tree species to atmospheric N deposition may vary depending on rate of N deposition and species-N-requirement.", "keywords": ["0106 biological sciences", "/dk/atira/pure/core/keywords/Life", "Tropics", "Species-N-requirement", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land", "Nitrogen deposition", "Forest dynamic", "Global change", "01 natural sciences", "Former LIFE faculty"]}, "links": [{"href": "https://doi.org/10.1007/s10342-008-0203-0"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/European%20Journal%20of%20Forest%20Research", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s10342-008-0203-0", "name": "item", "description": "10.1007/s10342-008-0203-0", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s10342-008-0203-0"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2008-04-09T00:00:00Z"}}, {"id": "10.1007/s10705-007-9121-7", "type": "Feature", "geometry": null, "properties": {"license": "Closed Access", "updated": "2026-04-04T16:15:00Z", "type": "Journal Article", "created": "2007-07-04", "title": "Effects Of Cropping History And Phosphorus Source On Yield And Nitrogen Fixation In Sole And Intercropped Cowpea\u2013Maize Systems", "description": "Symbiotic N2-fixation, N uptake efficiency, biomass- and crop production of cowpea and maize as affected by P source, sole- and intercropped, and introduction of break crops were studied on a farmer\u2019s fields in semi-arid Tanzania. Cowpea fixed around 60% of its N from the atmosphere amounting to 70\u00a0kg N\u00a0ha\u22121 under sole and 36\u00a0kg N\u00a0ha\u22121 under intercropping as estimated by the 15N isotope dilution method around peak biomass production. The amount of N2-fixed was 30\u201340% higher when P was applied as either TSP or MRP whereas cowpea yield were unaffected. Intercropped maize with 19,000 plant ha\u22121 accumulated the same amount of N as 38,000 sole cropped maize plants although intercropping reduced the dry matter accumulation by 25%. The N uptake efficiency of the applied 15N labelled fertiliser was 26%, which equal a total pool of early available plant N of 158\u00a0kg N\u00a0ha\u22121. Under the N deficient conditions, P application did not increase the grain yield of maize. The LER indicate that sole cropping required 18% more area than intercropping in order to produce the same grain yield, and 35% more land when LER was based on N uptakes. Introduction of break crops in the maize systems, more than doubled accumulation of dry matter and N in the grain compared to continuous maize cropping. During maturation sole crop cowpea shedded leaves containing 41\u00a0kg N ha\u22121. The current findings underline the importance of crop diversity in Sub Saharan Africa agriculture and emphasise the need for including all residues, including shedded leaves, in nutrient balance studies.", "keywords": ["2. Zero hunger", "Intercropping", "Nitrogen fixation", "/dk/atira/pure/core/keywords/Life", "LER", "Semi-arid", "Cowpea", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land", "Former LIFE faculty", "Maize"]}, "links": [{"href": "https://doi.org/10.1007/s10705-007-9121-7"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Nutrient%20Cycling%20in%20Agroecosystems", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s10705-007-9121-7", "name": "item", "description": "10.1007/s10705-007-9121-7", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s10705-007-9121-7"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2007-07-05T00:00:00Z"}}, {"id": "10.1016/j.agee.2010.10.001", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:15:32Z", "type": "Journal Article", "created": "2010-10-29", "title": "Soil Properties, Crop Production And Greenhouse Gas Emissions From Organic And Inorganic Fertilizer-Based Arable Cropping Systems", "description": "Organic and conventional farming practices differ in the use of several management strategies, including use of catch crops, green manure, and fertilization, which may influence soil properties, greenhouse gas emissions and productivity of agroecosystems. An 11-yr-old field experiment on a sandy loam soil in Denmark was used to compare several crop rotations with respect to a range of physical, chemical and biological characteristics related to carbon (C) and nitrogen (N) flows. Four organic rotations and an inorganic fertilizer-based system were selected to evaluate effects of fertilizer type, catch crops, of grass-clover used as green manure, and of animal manure application. Soil was sampled from winter wheat and spring barley plots on 19 September 2007, 14 April 2008 and 22 September 2008, i.e. before, during, and after the growth season. The soils were analyzed for multiple attributes: total soil organic carbon (SOC), total N, microbial biomass N (MBN), potentially mineralizable N (PMN), and levels of potential ammonium oxidation (PAO) and denitrifying enzyme activity (DEA). In situ measurements of soil heterotrophic carbon dioxide (CO2) respiration and nitrous oxide emissions were conducted in plots with winter wheat. In April 2008, prior to field operations, intact soil cores were collected at two depths (0\u20135 and 5\u201310 cm) in plots under winter wheat. Water retention characteristics of each core were determined and used to calculate relative gas diffusivity (DP/Do). Finally, crop growth was monitored and grain yields measured at harvest maturity. The different management strategies between 1997 and 2007 led to soil carbon inputs that were on average 18\u201368% and 32\u201391% higher in the organic than inorganic fertilizer-based rotations for the sampled winter wheat and spring barley crops, respectively. Nevertheless, SOC levels in 2008 were similar across systems. The cumulative soil respiration for the period February to August 2008 ranged between 2 and 3 t CO2\u2013C ha\u22121 and was correlated (r = 0.95) with average C inputs. In the organic cropping systems, pig slurry application and inclusion of catch crops generally increased soil respiration, PMN and PAO. At field capacity, relative gas diffusivity at 0\u20135 cm depth was >50% higher in the organic than the inorganic fertilizer-based system (P < 0.05). Crop yields in 2008 were generally lower in the low-input organic rotations than in the high-input inorganic fertilizer-based system; only spring barley in rotations with pig slurry application and incorporation of a catch crop prior to sowing obtained grain yields similar to levels achieved in the system where inorganic fertilizer was applied. These results suggest that within organic cropping systems, both microbial activity and crop yields could be enhanced through inclusion of catch crops. However, the timing of catch crop incorporation is critical.", "keywords": ["2. Zero hunger", "microbial biomass", "Nutrient turnover", "inorganic fertilizer", "15. Life on land", "potential ammonium oxidation", "Air and water emissions", "6. Clean water", "12. Responsible consumption", "denitrifier enzyme activity", "Soil biology", "/dk/atira/pure/core/keywords/Life", "13. Climate action", "potential mineralizable nitrogen", "catch drop", "gas diffusivity", "11. Sustainability", "Former LIFE faculty"]}, "links": [{"href": "https://doi.org/10.1016/j.agee.2010.10.001"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Agriculture%2C%20Ecosystems%20%26amp%3B%20Environment", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.agee.2010.10.001", "name": "item", "description": "10.1016/j.agee.2010.10.001", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.agee.2010.10.001"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2010-12-01T00:00:00Z"}}, {"id": "10.1016/j.foreco.2007.08.015", "type": "Feature", "geometry": null, "properties": {"license": "Closed Access", "updated": "2026-04-04T16:16:22Z", "type": "Journal Article", "created": "2007-10-01", "title": "Carbon And Nitrogen In Forest Floor And Mineral Soil Under Six Common European Tree Species", "description": "Abstract   The knowledge of tree species effects on soil C and N pools is scarce, particularly for European deciduous tree species. We studied forest floor and mineral soil carbon and nitrogen under six common European tree species in a common garden design replicated at six sites in Denmark. Three decades after planting the six tree species had different profiles in terms of litterfall, forest floor and mineral soil C and N attributes. Three groups were identified: (1) ash, maple and lime, (2) beech and oak, and (3) spruce. There were significant differences in forest floor and soil C and N contents and C/N ratios, also among the five deciduous tree species. The influence of tree species was most pronounced in the forest floor, where C and N contents increased in the order ash\u00a0=\u00a0lime\u00a0=\u00a0maple", "keywords": ["0106 biological sciences", "/dk/atira/pure/core/keywords/Life", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land", "01 natural sciences", "Former LIFE faculty"]}, "links": [{"href": "https://doi.org/10.1016/j.foreco.2007.08.015"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Forest%20Ecology%20and%20Management", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.foreco.2007.08.015", "name": "item", "description": "10.1016/j.foreco.2007.08.015", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.foreco.2007.08.015"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2008-02-01T00:00:00Z"}}], "links": [{"rel": "self", "type": "application/geo+json", "title": "This document as GeoJSON", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=%2Fdk%2Fatira%2Fpure%2Fcore%2Fkeywords%2FLife&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?keywords=%2Fdk%2Fatira%2Fpure%2Fcore%2Fkeywords%2FLife&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": "first", "title": "items (first)", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=%2Fdk%2Fatira%2Fpure%2Fcore%2Fkeywords%2FLife&", "hreflang": "en-US"}, {"rel": "last", "type": "application/geo+json", "title": "items (last)", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=%2Fdk%2Fatira%2Fpure%2Fcore%2Fkeywords%2FLife&offset=4", "hreflang": "en-US"}], "numberMatched": 4, "numberReturned": 4, "distributedFeatures": [], "timeStamp": "2026-04-04T17:38:20.972928Z"}