{"type": "FeatureCollection", "features": [{"id": "10.1007/s00374-010-0462-z", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-26T16:14:20Z", "type": "Journal Article", "created": "2010-04-26", "title": "The Effect Of Different Tree Species On The Chemical And Microbial Properties Of Reclaimed Mine Soils", "description": "The chemical and microbial properties of afforested mine soils are likely to depend on the species composition of the introduced vegetation. This study compared the chemical and microbial properties of organic horizons and the uppermost mineral layers in mine soils under pure pine (Pinus sylvestris), birch (Betula pendula), larch (Larix decidua), alder (Alnus glutinosa), and mixed pine\u2013alder and birch\u2013alder forest stands. The studied properties included soil pH, content of organic C (Corg) and total N (Nt), microbial biomass (Cmic), basal respiration, nitrogen mineralization rate (Min-N), and the activities of dehydrogenase, acid phosphomonoesterase, and urease. Near-infrared spectroscopy (NIR) was used to detect differences in the chemical composition of soil organic matter under the studied forest stands. There were significant differences in Corg and Nt contents between stands in both O and mineral soil horizons and also in the chemical composition of the accumulated organic matter, as indicated by NIR spectra differences. Alder was associated with the largest Corg and Nt accumulation but also with a significant decrease of pH in the mineral soil. Microbial biomass, respiration, the percentage of Corg present as Cmic, Min-N, and dehydrogenase activity were the highest under the birch stand, indicating a positive effect of birch on soil microflora. Admixture of alder to coniferous stand increased basal respiration, Min-N, and activities of dehydrogenase and acid phosphomonoesterase as compared with the pure pine stand. In the O horizon, soil pH and Nt content had the most important effects on all microbial properties. In this horizon, the activities of urease and acid phosphomonoesterase did not depend on microbial biomass. In the mineral layer, however, the amount of accumulated C and microbial biomass were of primary importance for the enzyme activities.", "keywords": ["microbial biomass", "13. Climate action", "soil enzyme activities", "NIR spectroscopy", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land", "mine soils", "01 natural sciences", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1007/s00374-010-0462-z"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Biology%20and%20Fertility%20of%20Soils", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s00374-010-0462-z", "name": "item", "description": "10.1007/s00374-010-0462-z", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s00374-010-0462-z"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2010-04-27T00:00:00Z"}}, {"id": "10.1016/j.apsoil.2013.10.009", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-26T16:15:25Z", "type": "Journal Article", "created": "2013-11-30", "title": "Microplate-Scale Fluorometric Soil Enzyme Assays As Tools To Assess Soil Quality In A Long-Term Agricultural Field Experiment", "description": "Abstract   We investigated the potential of microplate-scale fluorometric soil enzyme assays to differentiate plots under contrasting long-term organic and mineral N fertilization regimens to determine the relevance of this analytical approach to soil quality related studies.  Enzymes involved in the breakdown of cellulose and hemicellulose showed maximum activities in plots amended with manure. Conversely, the enzymes involved in the hydrolysis of starch and phosphate esters peaked under mineral N fertilization. Linear regression analysis indicated close associations between enzyme activities and other fundamental soil properties related to soil quality, and principal component analysis separated the soil samples according to their responses to organic and mineral N fertilization. We conclude that microplate-scale fluorimetry is a fast throughput tool for the measurement of multiple soil enzyme activities as soil quality indicators.", "keywords": ["2. Zero hunger", "Soil enzyme activities", " Microplate-scale fluorimetry", " 4-Methylumbelliferone", " Soil quality", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land"]}, "links": [{"href": "https://doi.org/10.1016/j.apsoil.2013.10.009"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Applied%20Soil%20Ecology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.apsoil.2013.10.009", "name": "item", "description": "10.1016/j.apsoil.2013.10.009", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.apsoil.2013.10.009"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2014-03-01T00:00:00Z"}}, {"id": "10.1016/j.soilbio.2007.08.023", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-26T16:16:41Z", "type": "Journal Article", "created": "2007-11-06", "title": "Direct And Indirect Effects Of Nitrogen Deposition On Litter Decomposition", "description": "Elevated nitrogen (N) deposition can affect litter decomposition directly, by raising soil N availability and the quantity and quality of litter inputs, and indirectly by altering plant community composition. We investigated the importance of these controls on litter decomposition using litter bags placed in annual herb based microcosm ecosystems that had been subject to two rates of N deposition (which raised soil inorganic N availability and stimulated litter inputs) and two planting regimes, namely the plant species compositions of low and high N deposition environments. In each microcosm, we harvested litter bags of 10 annual plant species, over an 8-week period, to determine mass loss from decomposition. Our data showed that species differed greatly in their decomposability, but that these differences were unlikely to affect decomposition at the ecosystem level because there was no correlation between a species\u2019 decomposability and its response to N deposition (measured as population seed production under high N, relative to low N, deposition). Litter mass loss was 2% greater in high N deposition microcosms. Using a comprehensive set of measurements of the microcosm soil environments, we found that the most statistically likely explanation for this effect was increased soil enzyme activity (cellobiosidase, \u03b2-glucosidase and \u03b2-xylosidase), which appears to have occurred in response to a combination of raised soil inorganic N availability and stimulated litter inputs. Our data indicate that direct effects of N deposition on litter input and soil N availability significantly affected decomposition but indirect effects did not. We argue that indirect effects of changes to plant species composition could be stronger in natural ecosystems, which often contain a greater diversity of plant functional types than those considered here.", "keywords": ["2. Zero hunger", "570", "Litter decomposition", "04 agricultural and veterinary sciences", "15. Life on land", "Nitrogen deposition", "630", "Plant species composition", "C:N ratio", "13. Climate action", "Decomposer community", "PLFA", "0401 agriculture", " forestry", " and fisheries", "Soil enzyme activities"]}, "links": [{"href": "https://doi.org/10.1016/j.soilbio.2007.08.023"}, {"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.2007.08.023", "name": "item", "description": "10.1016/j.soilbio.2007.08.023", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.soilbio.2007.08.023"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2008-03-01T00:00:00Z"}}, {"id": "10.1890/03-5120", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-26T16:19:44Z", "type": "Journal Article", "created": "2007-06-06", "title": "Nitrogen Deposition Modifies Soil Carbon Storage Through Changes In Microbial Enzymatic Activity", "description": "<p>Atmospheric nitrogen (N) deposition derived from fossil\uffe2\uff80\uff90fuel combustion, land clearing, and biomass burning is occurring over large geographical regions on nearly every continent. Greater ecosystem N availability can result in greater aboveground carbon (C) sequestration, but little is understood as to how soil C storage could be altered by N deposition. High concentrations of inorganic N accelerate the degradation of easily decomposable litter and slow the decomposition of recalcitrant litter containing large amounts of lignin. This pattern has been attributed to stimulation or repression of different sets of microbial extracellular enzymes. We hypothesized that soil C cycling in forest ecosystems with markedly different litter chemistry and decomposition rates would respond to anthropogenic N deposition in a manner consistent with the biochemical composition of the dominant vegetation. Specifically, oak\uffe2\uff80\uff90dominated ecosystems with low litter quality should gain soil C, and sugar maple ecosystems with high litter quality should lose soil C in response to high levels of N deposition (80 kg N\uffc2\uffb7ha\uffe2\uff88\uff921\uffc2\uffb7yr\uffe2\uff88\uff921). Consistent with this hypothesis, we observed over a three\uffe2\uff80\uff90year period a significant loss of soil C (20%) from a sugar maple\uffe2\uff80\uff90dominated ecosystem and a significant gain (10%) in soil C in an oak\uffe2\uff80\uff90dominated ecosystem, a result that appears to be mediated by the regulation of the microbial extracellular enzyme phenol oxidase. Elevated N deposition resulted in changes in soil carbon that were ecosystem specific and resulted from the divergent regulatory control of microbial extracellular enzymes by soil N availability.</p>", "keywords": ["forests", "13. Climate action", "Science", "Ecology and Evolutionary Biology", "soil enzyme activities", "0401 agriculture", " forestry", " and fisheries", "northern temperate", "04 agricultural and veterinary sciences", "15. Life on land", "Michigan (USA)", "carbon sequestration", "N deposition"], "contacts": [{"organization": "Waldrop, Mark P., Zak, Donald R., Sinsabaugh, Robert L., Gallo, Marcy, Lauber, Chris,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1890/03-5120"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Ecological%20Applications", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1890/03-5120", "name": "item", "description": "10.1890/03-5120", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1890/03-5120"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2004-08-01T00:00:00Z"}}], "links": [{"rel": "self", "type": "application/geo+json", "title": "This document as GeoJSON", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=soil+enzyme+activities&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=soil+enzyme+activities&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=soil+enzyme+activities&", "hreflang": "en-US"}, {"rel": "last", "type": "application/geo+json", "title": "items (last)", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=soil+enzyme+activities&offset=4", "hreflang": "en-US"}], "numberMatched": 4, "numberReturned": 4, "distributedFeatures": [], "timeStamp": "2026-07-27T14:59:36.864851Z"}