{"type": "FeatureCollection", "features": [{"id": "10.1016/j.eja.2007.01.010", "type": "Feature", "geometry": null, "properties": {"license": "Closed Access", "updated": "2026-06-26T16:17:20Z", "type": "Journal Article", "created": "2007-03-31", "title": "Effects Of Undersown Crops On Soil Mineral N And Grain Yield Of Spring Barley", "description": "Undersowing a cereal crop can reduce nitrogen (N) leaching and increase available N for the successive crop. An undersown crop can also compete with the main crop. Seventeen plant species were undersown in spring barley (Hordeum vulgare L.) to study their suitability regarding establishment, biomass production, competition with the main crop and effects on soil mineral N. Three different seeding rates were evaluated. Italian ryegrass (Lolium multiflorum Lam.) decreased nitrate nitrogen (NO3-N) content in late autumn and timothy (Phleum pratense L.) in the succeeding spring. A mixture was optimal to reduce N leaching. Italian ryegrass is a very competitive species that should be undersown at moderate seeding rates to avoid large yield reduction in the main crop. Black medic (Medicago lupulina L.) slightly increased N leaching risk, but red clover (Trifolium pratense L.) and white clover (Trifolium repens L.) did not increase soil NO3-N content. As clovers did not compete strongly with the main crop, fairly high seeding rates can be used to maximise N fixation to benefit the successive crop. \u00a9 2007 Elsevier B.V. All rights reserved.", "keywords": ["legumes", "yields", "cover crop", "nitrogen", "soil", "soil nitrate nitrogen", "typpi", "sato", "ohra", "sekaviljely", "viljanviljely", "typpiyhdisteet", "Hordeum vulgare", "cereals", "2. Zero hunger", "maaper\u00e4", "soil ammonium nitrogen", "legume", "04 agricultural and veterinary sciences", "15. Life on land", "viljakasvit", "grasses", "palkokasvit", "0401 agriculture", " forestry", " and fisheries", "Ka", "nurmihein\u00e4t", "intercropping"]}, "links": [{"href": "https://doi.org/10.1016/j.eja.2007.01.010"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/European%20Journal%20of%20Agronomy", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.eja.2007.01.010", "name": "item", "description": "10.1016/j.eja.2007.01.010", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.eja.2007.01.010"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2007-07-01T00:00:00Z"}}, {"id": "10.1016/j.foreco.2008.06.008", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-26T16:17:39Z", "type": "Journal Article", "created": "2008-07-31", "title": "Response Of Litter Decomposition And Soil C And N Transformations In A Norway Spruce Thinning Stand To Removal Of Logging Residue", "description": "Abstract   Increasing demand for production of bioenergy has led to an interest in forest management which uses logging residue from both clear-cuttings and thinning stands. The aim of this study was to investigate the effects of removal of logging residue in a thinning Norway spruce stand on (1) litter decomposition and (2) soil microbial processes in C and N cycling and the quality of soil organic matter. The study site was a 40-year-old Norway spruce stand growing on a relatively fertile site. During thinning, logging residue was either removed (whole-tree harvest) or left on the site (stem-only harvest). Different types of material in the logging residue, from main branches to needles, were weighed separately into mesh bags. The bags were placed above the moss layer in the whole-tree harvest treatment and in the logging residue layer in the stem-only harvest treatment, and decomposition was monitored for 5 years after treatment. From the humus layer, samples were taken 10 years after treatment. Harvest method affected the mass loss of the litter material very little but the C-to-N ratio of the remaining material was slightly higher in whole-tree harvest than in stem-only harvest, particularly in the needle material. In the humus layer samples, taken 10 years after treatment, the rate of C mineralization was lower in whole-tree harvest than in stem-only harvest; also the rate of net N mineralization and the amounts of C and N in the microbial biomass tended to be lower, although not statistically significantly. Removal of logging residue had no effect on pH (    p   H    H  2   O       3.9 in both treatments) or C-to-N ratio (28 in both treatments) in the humus layer. The concentrations of total water-soluble phenols and an important group of phenols, condensed tannins, were both lower in the humus layer of whole-tree harvest than in that of stem-only harvest. Concentrations of sesqui-, di- or triterpenes in the humus layer were similar in both treatments. In conclusion, 10 years after harvest, soil microbial activities and organic matter characteristics in whole-tree harvest differed from those in stem-only harvest.", "keywords": ["0106 biological sciences", "hakkuut\u00e4hteen korjuu", "terpeenit", "570", "0401 agriculture", " forestry", " and fisheries", "typen kierto", "04 agricultural and veterinary sciences", "fenoliset yhdisteet", "mikrobiprosessit", "15. Life on land", "kokopuun korjuu", "01 natural sciences"], "contacts": [{"organization": "Smolander, A., Levula, T., Kitunen, V.,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1016/j.foreco.2008.06.008"}, {"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.2008.06.008", "name": "item", "description": "10.1016/j.foreco.2008.06.008", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.foreco.2008.06.008"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2008-08-01T00:00:00Z"}}, {"id": "10.1016/j.soilbio.2010.04.015", "type": "Feature", "geometry": null, "properties": {"license": "Closed Access", "updated": "2026-06-26T16:18:25Z", "type": "Journal Article", "created": "2010-05-06", "title": "Removal Of Logging Residue In Norway Spruce Thinning Stands: Long-Term Changes In Organic Layer Properties", "description": "Abstract   The aim of this study was to determine whether repeated removal of logging residue in Norway spruce thinning stands causes consistent long-term effects on soil microbial processes in C and N cycling and on soil concentrations of two major groups of plant secondary compounds, phenolic compounds and terpenes. The study sites were four 47-to 70-year-old Norway spruce (Picea abies (L.) Karst) stands, all growing on relatively fertile sites in southern and central Finland. These stands had been thinned twice, the first thinning 22\u201329 years ago and the second thinning 10 years after the first, 12\u201319 years ago. After thinnings, the logging residue was either removed (whole-tree harvest, WTH) or left on the site (stem-only harvest, SOH). In one experiment there was also a treatment where a double amount of logging residue was distributed on the plot. Samples were taken from the organic layer (Ofh). Removal of logging residue did not affect the C-to-N ratio or pH much. Removal of logging residue did not affect the amounts of C and N in the microbial biomass but tended to decrease the rates of net N and C mineralization (CO2 production). It decreased both sesquiterpene and diterpene (mostly resin acids) concentrations but did not affect triterpene (mostly sterols) concentrations. Neither total water-soluble phenolic compounds nor an important group of phenolic compounds, condensed tannins, were affected by removal of logging residue. At these four study sites, the effects of removing logging residue were strongest on the two least fertile sites, whereas the most fertile site did not respond much to removal. In conclusion, with regard to the processes and ratios indicating N availability, stem-only harvest seems generally to be more favorable than whole-tree harvest in long-term.", "keywords": ["kuusi", "0106 biological sciences", "2. Zero hunger", "hakkuut\u00e4hde", "570", "hiilen kierto", "0401 agriculture", " forestry", " and fisheries", "typen kierto", "04 agricultural and veterinary sciences", "15. Life on land", "kokopuunkorjuu", "01 natural sciences", "sekundaariyhdisteet"], "contacts": [{"organization": "Smolander, A., Kitunen, V., Tamminen, P., Kukkola, M.,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1016/j.soilbio.2010.04.015"}, {"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.2010.04.015", "name": "item", "description": "10.1016/j.soilbio.2010.04.015", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.soilbio.2010.04.015"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2010-08-01T00:00:00Z"}}, {"id": "10.3390/ijerph19042372", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-26T16:23:25Z", "type": "Journal Article", "created": "2022-02-21", "title": "How Socio-Economic Drivers Explain Landscape Soil Erosion Regulation Services in Polish Catchments", "description": "<?xml version='1.0' encoding='UTF-8'?><article><p>Most studies that address the relationship between socio-economic characteristics and soil erosion focus on the effects of soil erosion on socio-economic conditions at different levels, from global to smallholder. Few, if any, efforts are made to address the influence of socio-economic variables on the soil erosion rate as an indicator of landscape degradation. The present study was carried out using spatial data from 402 catchments that cover Poland, to find out how socio-economic variables, which include area-weighted average income per capita (PLN km\u22122), area-weighted average gross domestic product (PLN km\u22122), population density (person km\u22122), and human development index can drive the soil erosion rate (kg ha\u22121 yr\u22121), along with annual precipitation, soil and geomorphological variables that include soil organic carbon content, soil water content, clay ratio, stream gradient, and terrain slope. The results showed that the soil erosion rate is indirectly driven by the socio-economic variables in the study catchments, as it is alleviated by increasing population density, the area-weighted average gross domestic product, and the human development index. Furthermore, analyzing the incremental relationship between soil erosion rate and the area-weighted average of socio-economic variables revealed that no uniform change can be observed in the relationship between the area-weighted average socio-economic variables and soil erosion in the study catchments.</p></article>", "keywords": ["HDI", "2. Zero hunger", "Conservation of Natural Resources", "landscape; ecosystem services; soil erosion regulation; area-weighted average income per capita; area-weighted average GDP; HDI", "04 agricultural and veterinary sciences", "15. Life on land", "Area-weighted average income per capita", "01 natural sciences", "Article", "Carbon", "Area-weighted average GDP", "Soil erosion regulation", "Soil", "Socioeconomic Factors", "13. Climate action", "11. Sustainability", "Ecosystem services", "Humans", "0401 agriculture", " forestry", " and fisheries", "Landscape", "Poland", "Environmental Monitoring", "Soil Erosion", "0105 earth and related environmental sciences"]}, "links": [{"href": "http://www.mdpi.com/1660-4601/19/4/2372/pdf"}, {"href": "https://www.mdpi.com/1660-4601/19/4/2372/pdf"}, {"href": "https://doi.org/10.3390/ijerph19042372"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/International%20Journal%20of%20Environmental%20Research%20and%20Public%20Health", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.3390/ijerph19042372", "name": "item", "description": "10.3390/ijerph19042372", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.3390/ijerph19042372"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2022-02-18T00:00:00Z"}}, {"id": "10261/279272", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-26T16:28:13Z", "type": "Journal Article", "created": "2022-02-21", "title": "How Socio-Economic Drivers Explain Landscape Soil Erosion Regulation Services in Polish Catchments", "description": "<?xml version='1.0' encoding='UTF-8'?><article><p>Most studies that address the relationship between socio-economic characteristics and soil erosion focus on the effects of soil erosion on socio-economic conditions at different levels, from global to smallholder. Few, if any, efforts are made to address the influence of socio-economic variables on the soil erosion rate as an indicator of landscape degradation. The present study was carried out using spatial data from 402 catchments that cover Poland, to find out how socio-economic variables, which include area-weighted average income per capita (PLN km\u22122), area-weighted average gross domestic product (PLN km\u22122), population density (person km\u22122), and human development index can drive the soil erosion rate (kg ha\u22121 yr\u22121), along with annual precipitation, soil and geomorphological variables that include soil organic carbon content, soil water content, clay ratio, stream gradient, and terrain slope. The results showed that the soil erosion rate is indirectly driven by the socio-economic variables in the study catchments, as it is alleviated by increasing population density, the area-weighted average gross domestic product, and the human development index. Furthermore, analyzing the incremental relationship between soil erosion rate and the area-weighted average of socio-economic variables revealed that no uniform change can be observed in the relationship between the area-weighted average socio-economic variables and soil erosion in the study catchments.</p></article>", "keywords": ["HDI", "2. Zero hunger", "Conservation of Natural Resources", "landscape; ecosystem services; soil erosion regulation; area-weighted average income per capita; area-weighted average GDP; HDI", "04 agricultural and veterinary sciences", "15. Life on land", "Area-weighted average income per capita", "01 natural sciences", "Article", "Carbon", "Area-weighted average GDP", "Soil erosion regulation", "Soil", "Socioeconomic Factors", "13. Climate action", "11. Sustainability", "Ecosystem services", "Humans", "0401 agriculture", " forestry", " and fisheries", "Landscape", "Poland", "Environmental Monitoring", "Soil Erosion", "0105 earth and related environmental sciences"]}, "links": [{"href": "http://www.mdpi.com/1660-4601/19/4/2372/pdf"}, {"href": "https://www.mdpi.com/1660-4601/19/4/2372/pdf"}, {"href": "https://doi.org/10261/279272"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/International%20Journal%20of%20Environmental%20Research%20and%20Public%20Health", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10261/279272", "name": "item", "description": "10261/279272", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10261/279272"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2022-02-18T00:00:00Z"}}, {"id": "PMC8872238", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-26T16:33:21Z", "type": "Journal Article", "created": "2022-02-21", "title": "How Socio-Economic Drivers Explain Landscape Soil Erosion Regulation Services in Polish Catchments", "description": "<?xml version='1.0' encoding='UTF-8'?><article><p>Most studies that address the relationship between socio-economic characteristics and soil erosion focus on the effects of soil erosion on socio-economic conditions at different levels, from global to smallholder. Few, if any, efforts are made to address the influence of socio-economic variables on the soil erosion rate as an indicator of landscape degradation. The present study was carried out using spatial data from 402 catchments that cover Poland, to find out how socio-economic variables, which include area-weighted average income per capita (PLN km\u22122), area-weighted average gross domestic product (PLN km\u22122), population density (person km\u22122), and human development index can drive the soil erosion rate (kg ha\u22121 yr\u22121), along with annual precipitation, soil and geomorphological variables that include soil organic carbon content, soil water content, clay ratio, stream gradient, and terrain slope. The results showed that the soil erosion rate is indirectly driven by the socio-economic variables in the study catchments, as it is alleviated by increasing population density, the area-weighted average gross domestic product, and the human development index. Furthermore, analyzing the incremental relationship between soil erosion rate and the area-weighted average of socio-economic variables revealed that no uniform change can be observed in the relationship between the area-weighted average socio-economic variables and soil erosion in the study catchments.</p></article>", "keywords": ["HDI", "2. Zero hunger", "Conservation of Natural Resources", "landscape; ecosystem services; soil erosion regulation; area-weighted average income per capita; area-weighted average GDP; HDI", "04 agricultural and veterinary sciences", "15. Life on land", "Area-weighted average income per capita", "01 natural sciences", "Article", "Carbon", "Area-weighted average GDP", "Soil erosion regulation", "Soil", "Socioeconomic Factors", "13. Climate action", "11. 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