{"type": "FeatureCollection", "features": [{"id": "10.1016/j.foreco.2011.09.015", "type": "Feature", "geometry": null, "properties": {"updated": "2026-10-06T16:16:11Z", "type": "Journal Article", "created": "2011-10-25", "title": "Effects Of Logging Residue Harvest In Thinnings On Amounts Of Soil Carbon And Nutrients In Scots Pine And Norway Spruce Stands", "description": "Abstract The effects of whole-tree thinning on soil were investigated in 9 Scots pine and 4 Norway spruce experiments in Finland. Three pine experiments had been thinned once, the other experiments twice. Time between thinning and soil sampling varied from 3 to 30\u00a0years. Amounts of exchangeable base cations, Ca, K and Mg, seemed to have decreased after whole-tree thinning. The larger the amount of removed logging residues, the greater these decreases tended to be. Changes in base cations in soil due to whole-tree harvest were more expected than were changes in the amounts of nitrogen, because, e.g. potassium and magnesium in logging residues of one thinning corresponded, on average, to 60\u201370% and to 30\u201340%, respectively, of the total amounts of nutrients in the organic layer, but nitrogen only to 10%. Overall, in the experiments studied, whole-tree harvest induced only slight changes in soil nutrients. The changes would be even smaller if the present motorised whole-tree harvest, in which logging residues are not totally removed, were compared to the present motorised stem-only harvest, in which logging residues are not distributed evenly over the cutting area.", "keywords": ["2. Zero hunger", "0106 biological sciences", "hakkuut\u00e4hde", "570", "13. Climate action", "kokopuukorjuu", "577", "maan ominaisuudet", "15. Life on land", "01 natural sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.foreco.2011.09.015"}, {"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.2011.09.015", "name": "item", "description": "10.1016/j.foreco.2011.09.015", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.foreco.2011.09.015"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2012-01-01T00:00:00Z"}}, {"id": "10.1016/j.foreco.2014.04.031", "type": "Feature", "geometry": null, "properties": {"updated": "2026-10-06T16:16:12Z", "type": "Journal Article", "created": "2014-05-24", "title": "Wood Ash In Boreal, Low-Productive Pine Stands On Upland And Peatland Sites: Long-Term Effects On Stand Growth And Soil Properties", "description": "Abstract The effect of wood ash on growth of Scots pine was studied in 64- to 75-year-old stands on three upland sites (Exps. 402, 407 and 408) for 20\u00a0years and in a 30-year-old Scots pine stand on an oligotrophic peatland site (Exp. 251) for 25\u00a0years. In Experiments 407 and 251 the responses of soil chemical properties and soil microbiological processes related to C and N cycling were also studied. The upland experiments included a control and a treatment with 3\u00a0Mg\u00a0ha\u22121 of wood ash. In Exp. 407, 120\u00a0kg N\u00a0ha\u22121 was applied together with ash; this experiment also included a treatment with N alone. The peatland experiment included a control and a treatment with 4.8\u00a0Mg\u00a0ha\u22121 of wood ash. All experiments had 3 replications. Wood ash significantly decreased soil acidity on all sites. On the upland site, after 20\u00a0years, the concentration of K2SO4-extractable DOC and the rates of C mineralization (CO2\u2013C production) and net N mineralization were all higher in the Ash\u00a0+\u00a0N treatment than in the control or N treatments. However, the treatments did not significantly affect the amounts of C or N in the microbial biomass or the concentration of NH4\u2013N. On the peatland site, after 27\u00a0years, ash stimulated C mineralization and cellulose decomposition, but microbial biomass C or N, net N mineralization or the concentration of N were not affected significantly. On both the upland and peatland site, net nitrification was very low in all treatments. In Exp. 408, the volume growth in the control and Ash treatment was during the 20-year study period 60 and 64 m3\u00a0ha\u22121, respectively, and in Exp. 402 108 and 120\u00a0m3\u00a0ha\u22121, respectively, the latter difference being significant. In Exp. 407, the volume growth in the Ash\u00a0+\u00a0N treatment was during the 20-year study period significantly higher (92\u00a0m3\u00a0ha\u22121) than in the N and control treatments (76 and 73\u00a0m3\u00a0ha\u22121, respectively). On the peatland site during the 25-year study period the growth was 145 and 169\u00a0m3\u00a0ha\u22121, in the control and Ash treatments, respectively. In conclusion, the long-term positive response of stem growth to wood ash on peatlands and N fertilized upland sites can be partly explained by changes in soil nutrient status and by microbial processes related to C and N cycling.", "keywords": ["0106 biological sciences", "maan happamuus", "selluloosan hajoaminen", "Pinus sylvestris L", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land", "01 natural sciences", "maan mikrobiologiset ominaisuudet", "630"], "contacts": [{"organization": "Saarsalmi, A., Smolander, A., Moilanen, M., Kukkola, M.,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1016/j.foreco.2014.04.031"}, {"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.2014.04.031", "name": "item", "description": "10.1016/j.foreco.2014.04.031", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.foreco.2014.04.031"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2014-09-01T00:00:00Z"}}, {"id": "10.1029/2020wr028624", "type": "Feature", "geometry": null, "properties": {"updated": "2026-10-06T16:17:12Z", "type": "Journal Article", "created": "2021-06-21", "title": "Hydraulic and Physical Properties of Managed and Intact Peatlands: Application of the Van Genuchten\u2010Mualem Models to Peat Soils", "description": "Abstract

Undisturbed peatlands are effective carbon sinks and provide a variety of ecosystem services. However, anthropogenic disturbances, especially land drainage, strongly alter peat soil properties and jeopardize the benefits of peatlands. The effects of disturbances should therefore be assessed and predicted. To support accurate modeling, this study determined the physical and hydraulic properties of intact and disturbed peat samples collected from 59 sites (in total 3,073 samples) in Finland and Norway. The bulk density (BD), porosity, and specific yield (Sy) values obtained indicated that the top layer (0\uffe2\uff80\uff9330\uffc2\uffa0cm depth) at agricultural and peat extraction sites was most affected by land use change. The BD in the top layer at agricultural, peat extraction, and forestry sites was 441%, 140%, and 92% higher, respectively, than that of intact peatlands. Porosity decreased with increased BD, but not linearly. Agricultural and peat extraction sites had the lowest saturated hydraulic conductivity, Sy, and porosity, and the highest BD of the land use options studied. The van Genuchten\uffe2\uff80\uff90Mualem (vGM) soil water retention curve (SWRC) and hydraulic conductivity (K) models proved to be applicable for the peat soils tested, providing values of SWRC, K, and vGM\uffe2\uff80\uff90parameters (\uffce\uffb1 and n) for peat layers (top, middle and bottom) under different land uses. A decrease in peat soil water content of \uffe2\uff89\uffa510% reduced the unsaturated K values by two orders of magnitude. This unique data set can be used to improve hydrological modeling in peat\uffe2\uff80\uff90dominated catchments and for fuller integration of peat soils into large\uffe2\uff80\uff90scale hydrological models.Undisturbed peatlands are effective carbon sinks and provide a variety of ecosystem services. However, anthropogenic disturbances, especially land drainage, strongly alter peat soil properties and jeopardize the benefits of peatlands. The effects of disturbances should therefore be assessed and predicted. To support accurate modeling, this study determined the physical and hydraulic properties of intact and disturbed peat samples collected from 59 sites (in total 3,073 samples) in Finland and Norway. The bulk density (BD), porosity, and specific yield (Sy) values obtained indicated that the top layer (0\uffe2\uff80\uff9330\uffc2\uffa0cm depth) at agricultural and peat extraction sites was most affected by land use change. The BD in the top layer at agricultural, peat extraction, and forestry sites was 441%, 140%, and 92% higher, respectively, than that of intact peatlands. Porosity decreased with increased BD, but not linearly. Agricultural and peat extraction sites had the lowest saturated hydraulic conductivity, Sy, and porosity, and the highest BD of the land use options studied. The van Genuchten\uffe2\uff80\uff90Mualem (vGM) soil water retention curve (SWRC) and hydraulic conductivity (K) models proved to be applicable for the peat soils tested, providing values of SWRC, K, and vGM\uffe2\uff80\uff90parameters (\uffce\uffb1 and n) for peat layers (top, middle and bottom) under different land uses. A decrease in peat soil water content of \uffe2\uff89\uffa510% reduced the unsaturated K values by two orders of magnitude. This unique data set can be used to improve hydrological modeling in peat\uffe2\uff80\uff90dominated catchments and for fuller integration of peat soils into large\uffe2\uff80\uff90scale hydrological models.