{"type": "FeatureCollection", "features": [{"id": "10.1007/s10021-010-9341-6", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-25T16:14:54Z", "type": "Journal Article", "created": "2010-05-27", "title": "Size Of Precipitation Pulses Controls Nitrogen Transformation And Losses In An Arid Patagonian Ecosystem", "description": "Arid ecosystems receive precipitation pulses of different sizes that may differentially affect nitrogen (N) losses and N turnover during the growing season. We designed a rainfall manipulation experiment in the Patagonian steppe, southern Argentina, where we simulated different precipitation patterns by adding the same amount of water in evenly spaced three-small rainfall events or in one-single large rainfall event, three times during a growing season. We measured the effect of the size of rainfall pulses on N mineralization and N losses by denitrification, ammonia volatilization, and nitrate and ammonia leaching. Irrigation pulses stimulated N mineralization (P < 0.05), with small and frequent pulses showing higher responses than large pulses (P < 0.10). Irrigation effects were transient and did not result in changes in seasonal net N mineralization suggesting a long-term substrate limitation. Water pulses stimulated gaseous N losses by denitrification, with large pulses showing higher responses than small pulses (P < 0.05), but did not stimulate ammonia volatilization. Nitrate leaching also was higher after large than after small precipitation events (P < 0.05). Small events produced higher N transformations and lower N losses by denitrification and nitrate leaching than large events, which would produce higher N availability for plant growth. Climate change is expected to increase the frequency of extreme precipitation events and the proportion of large to small rainfall events. Our results suggest that these changes would result in reduced N availability and a competitive advantage for deep-rooted species that prefer nitrate over ammonia. Similarly, the ammonium:nitrate ratio might decrease because large events foster nitrate losses but not ammonium losses.", "keywords": ["2. Zero hunger", "Ammonia Volatilization", "Precipitation Pulses", "Arid Ecosystems", "Patagonian Steppe", "Nitrate Leaching", "Soil Inorganic N", "04 agricultural and veterinary sciences", "15. Life on land", "01 natural sciences", "Net N Mineralization", "13. Climate action", "https://purl.org/becyt/ford/1.6", "Denitrification", "0401 agriculture", " forestry", " and fisheries", "https://purl.org/becyt/ford/1", "Nitrogen-Water Interactions", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1007/s10021-010-9341-6"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Ecosystems", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s10021-010-9341-6", "name": "item", "description": "10.1007/s10021-010-9341-6", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s10021-010-9341-6"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2010-05-28T00:00:00Z"}}, {"id": "10.1016/j.soilbio.2006.06.008", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-25T16:17:00Z", "type": "Journal Article", "created": "2006-07-30", "title": "Impact Of Harvesting And Logging Slash On Nitrogen And Carbon Dynamics In Soils From Upland Spruce Forests In Northeastern Ontario", "description": "Abstract   The potential impact of timber harvesting in the boreal forest on aquatic ecosystem water quality and productivity depends in part on the production of nutrients within the soil of the harvested catchment. Nitrogen supplied by organic matter decomposition is of particular interest because of the important role that N plays in biotic processes in surface waters, and in forest nutrition in general. Logging slash quality and input to the forest floor has the potential to influence N availability after harvest on clearcut sites. Net production of organic and inorganic-N and microbial biomass C and N concentrations were determined during a 90-day laboratory incubation at constant temperature and moisture. Incubated soils included F horizon and shallow mineral soil horizons (0\u20135\u00a0cm) from unharvested and full-tree harvested (2 and 12 growing seasons since harvest) boreal forest sites at the Esker Lakes Research Area (ELRA), in northeastern Ontario, Canada. In an ancillary experiment, black spruce foliage was added to unharvested forest floor material after 30 days during a 90-day laboratory incubation to simulate the influence of logging slash from full-tree harvesting on C and N dynamics. Twelve-year old clearcut F horizon material released on average 75 and 5 times more        NO     3    -      -N and 3 and 2 times as much inorganic-N than soil collected from unharvested and 2-year-old clearcuts, respectively. This increase in        NO     3    -      -N accumulation during the incubation was accompanied by decreases in both exchangeable        NH     4    +      -N and microbial biomass C and N levels. Net daily changes in microbial biomass N were significantly related to organic and inorganic-N accumulation or loss within the F horizon. Mineral soil release of inorganic-N was lower than release from the forest floor. Nitrate-nitrogen accumulation was lower, and        NH     4    +      -N accumulation was higher in mineral soil from unharvested sites when compared to 12-year-old clearcuts. Calculated harvest response ratios indicated that incubated mineral soil from the 12-year-old clearcut sites released significantly greater amounts of        NO     3    -      -N than 2-year-old clearcuts. Incorporation of black spruce needles into F horizon material reduced the production of organic and inorganic-N and increased microbial biomass N. Laboratory incubations of F horizon and shallow mineral soil from 12-year-old clearcuts suggested that these boreal soils have the capacity for increased inorganic-N production compared to uncut stands several years after harvesting. This has the potential to increase N availability to growing boreal forest plantations and increase N leaching due to greater        NO     3    -      -N levels in the forest soil.", "keywords": ["logging slash", "0106 biological sciences", "microbial biomass", "potential aquatic impacts", "net N mineralization", "immobilization", "0401 agriculture", " forestry", " and fisheries", "boreal forest", "04 agricultural and veterinary sciences", "15. Life on land", "01 natural sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.soilbio.2006.06.008"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20Biology%20and%20Biochemistry", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.soilbio.2006.06.008", "name": "item", "description": "10.1016/j.soilbio.2006.06.008", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.soilbio.2006.06.008"}, {"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": "10.1007/s10457-015-9845-3", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-25T16:14:59Z", "type": "Journal Article", "created": "2015-09-12", "title": "The Introduction Of Hybrid Walnut Trees (Juglans Nigra X Regia Cv. Ng23) Into Cropland Reduces Soil Mineral N Content In Autumn In Southern France", "description": "The introduction of trees in cropland may be a way to improve the mineral nitrogen (N) use efficiency since tree roots can intercept N leached below the crop rooting zone and recycle it as organic N. The aim of this study was to determine soil mineral N (SMN) and total N (STN) contents after 14 years of hybrid walnut tree growth in an agroforestry system. Soil cores were collected and analyses in mid-autumn 2009, in intercropped agroforestry (AF), pure tree (FC) and sole crop control (CC) plots. The SMN was significantly reduced in AF compared to CC (64, 58 and 51 % of reduction at 0.2, 1 and 2 m depth respectively). In the top 1 m of soil, the stock of SMN was 77.7 kg N ha\u22121 in CC versus 32.8 kg N ha\u22121 in AF. Trees in AF developed deeper fine roots than in FC, likely involved in the reduction of SMN when compared to CC. Despite this quantitative reduction, trees also progressively modified the form of mineral N in soil by decreasing the percentage of nitrate (NO3 \u2212) in SMN, particularly in FC compared to CC, while AF was intermediate. The STN was not significantly different between AF and CC; but was higher in FC in the top soil, probably due to weeds and superficial tree root biomasses. Our results suggest that the introduction of hybrid walnut trees into cropland may be an efficient practice to reduce the potentially leachable N by winter rainfall.", "keywords": ["[SDV.SA]Life Sciences [q-bio]/Agricultural sciences", "2. Zero hunger", "[SDV.SA] Life Sciences [q-bio]/Agricultural sciences", "571", "potential net N mineralization and nitrification", "04 agricultural and veterinary sciences", "15. Life on land", "hybrid walnut trees", "soil mineral", "N Total", "agroforestry systems", "[SDV.BV]Life Sciences [q-bio]/Vegetal Biology", "0401 agriculture", " forestry", " and fisheries", "[SDV.BV] Life Sciences [q-bio]/Vegetal Biology"]}, "links": [{"href": "https://doi.org/10.1007/s10457-015-9845-3"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Agroforestry%20Systems", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s10457-015-9845-3", "name": "item", "description": "10.1007/s10457-015-9845-3", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s10457-015-9845-3"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2015-09-12T00:00:00Z"}}, {"id": "10.17221/322-pse", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-25T16:19:56Z", "type": "Journal Article", "created": "2018-02-10", "title": "Effect Of Long-Term Application Of Manure And Mineral Fertilizers On Nitrogen Mineralization And Microbial Biomass In Paddy Soil During Rice Growth Stages", "description": "Net N mineralization rate (NMR), net N consumption rate (NCR), microbial biomass carbon (MBC) and nitrogen (MBN), potentially mineralizable N (PMN) and mineral N (N-NH+4 and N-NO-3) were measured in paddy soil at five growth stages of rice to determine the effect of long-term fertilization in subtropical China. The studied long-term treatments included CK (no fertilization), N, NP, NPK and NPK + OM (NPK plus organic manure). The NPK + OM treatment gave the highest values of the measured variables among all treatments. There was no significant difference in other treatments except for mineral N and PMN at early growth stages. All these variables were generally highest at transplanting stage as two thirds of fertilization was applied as basal fertilizers and the rice uptake was low. Then they decreased or leveled off with the rice growth stages except for MN in all treatments. Stepwise regression revealed that NMR was significantly correlated with MBC and N-NH+4 (R2 = 0.954, P &lt; 0.01) at all rice growth stages. So, mineral plus manure fertilizer application and more mineral fertilizer as topdressing were recommended in subtropical paddy soil.", "keywords": ["2. Zero hunger", "paddy soil", "potential mineralizable n", "in situ", "Plant culture", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "soil microbial biomass", "6. Clean water", "net n mineralization", "SB1-1110"], "contacts": [{"organization": "Bi, L (Bi, L.), Yao, W (Yao, W.), Lai, T (Lai, T.), Zhang, J (Zhang, J.), Qin, J (Qin, J.), Yu, X (Yu, X.),", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.17221/322-pse"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Plant%2C%20Soil%20and%20Environment", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.17221/322-pse", "name": "item", "description": "10.17221/322-pse", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.17221/322-pse"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2009-03-31T00:00:00Z"}}], "links": [{"rel": "self", "type": "application/geo+json", "title": "This document as GeoJSON", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=net+N+mineralization&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=net+N+mineralization&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=net+N+mineralization&", "hreflang": "en-US"}, {"rel": "last", "type": "application/geo+json", "title": "items (last)", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=net+N+mineralization&offset=4", "hreflang": "en-US"}], "numberMatched": 4, "numberReturned": 4, "distributedFeatures": [], "timeStamp": "2026-07-26T04:12:07.893399Z"}