{"type": "FeatureCollection", "features": [{"id": "10.1016/j.agee.2006.09.012", "type": "Feature", "geometry": null, "properties": {"updated": "2026-10-06T16:15:25Z", "type": "Journal Article", "created": "2006-11-14", "title": "Influence Of No-Tillage On The Distribution And Lability Of Phosphorus In Finnish Clay Soils", "description": "Abstract No-tillage (NT) is a method adopted to reduce erosion and particulate phosphorus (P) load from arable land to watercourses. However, it has been found to increase the loss of dissolved P with surface runoff, but the reasons for that have rarely been examined in detail. The objective of the present study was to determine the chemical factors explaining this response by investigating the impact of NT on the type and distribution of P reserves as well as on organic carbon (C) in the 0\u201335\u00a0cm topsoil layer of clay soil profiles (Vertic Cambisols). Soil samples were taken from two experimental fields (Jokioinen and Aurajoki) at 0\u20135, 5\u201320 and 20\u201335\u00a0cm depths in conventionally tilled (CT) and non-tilled (for 4\u20135 years) plots. The plots had been cultivated and fertilized according to the common field practices in Finland (15\u201318\u00a0kg\u00a0P and 100\u2013128\u00a0kg\u00a0N\u00a0ha \u22121 \u00a0year \u22121 ). Inorganic and organic P reserves characterized by a modified Chang and Jackson fractionation procedure were not significantly affected by the cultivation methods. However, in the uppermost soil layer (0\u20135\u00a0cm) in NT of the Jokioinen field, the labile P determined by water extraction (P w ) increased significantly, whereas the increase in P extracted with acid ammonium acetate (P AAC ) remained statistically insignificant. The increase in labile P coincided with a significant increase in organic carbon (C), which supports the theory that competition between organic anions and phosphate for the same sorption sites on oxide surfaces will enhance the lability of soil P. In the Aurajoki field with distinct soil cracking, P w and P AAC were not affected by NT in the uppermost soil layer, but they increased in the deepest soil layer (20\u201335\u00a0cm) concomitantly with an increase in Al-bound P and organic C. However, the increases were not statistically significant. In both fields, soil acidification due to the repeated application of N fertilizers at a shallow soil depth as well as the accumulation of organic C lowered pH of the uppermost soil layer in NT compared to the deeper soil layers. The results indicated that even short-term NT can increase the labile P in clay soil. However, further studies are needed to assess the long-term changes in lability of surface soil P and, consequently, the possible need for readjustment of the fertilization level in NT.", "keywords": ["suorakylv\u00f6", "2. Zero hunger", "330", "no-tillage", "04 agricultural and veterinary sciences", "15. Life on land", "01 natural sciences", "puskurikyky", "6. Clean water", "ploughing", "inorganic phosphorus", "kynt\u00f6", "Suomi", "clay soils", "0401 agriculture", " forestry", " and fisheries", "Ka", "savimaat", "water-soluble phosphorus", "phosphorus", "fosfori", "P buffering capacit", "vesiliukoinen fosfori", "Finland", "ep\u00e4orgaaninen fosfori", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.agee.2006.09.012"}, {"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.2006.09.012", "name": "item", "description": "10.1016/j.agee.2006.09.012", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.agee.2006.09.012"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2007-05-01T00:00:00Z"}}, {"id": "ftluke:oai:jukuri.luke.fi:10024/543807", "type": "Feature", "geometry": null, "properties": {"updated": "2026-10-06T16:26:46Z", "type": "Report", "title": "N\u00e4\u00e4t\u00e4m\u00f6joen kest\u00e4v\u00e4n lohenkalastuksen s\u00e4\u00e4telymalli", "description": "\u201dN\u00e4\u00e4t\u00e4m\u00f6joen kest\u00e4v\u00e4n kalastuksen s\u00e4\u00e4telymalli\u201d-hankkeessa osallistettiin paikalliskalastajat ja kalastusmatkailijat etsim\u00e4\u00e4n lohenkalastuksen s\u00e4\u00e4telyvaihtoehtoja siten, ett\u00e4 eri kalastajien taloudelliset, kulttuuriset ja virkistykselliset tarpeet tulisivat huomioiduksi. Mielipidetutkimukset tehtiin syksyll\u00e4 2017. Tiedusteltavista asiakohdista annettiin valintavaihtoehtoja, joihin toivottiin my\u00f6s perustelua, \u201dvapaata sanaa\u201d. Kalastuksen s\u00e4\u00e4telyn kysymykset laadittiin Kolttien kyl\u00e4kokouksen edustajien, Mets\u00e4hallituksen ja Luonnonvarakeskuksen yhteisty\u00f6n\u00e4. N\u00e4\u00e4t\u00e4m\u00f6joen luonnonvaraisen lohikannan arvioidaan olevan heikentyneess\u00e4 tilassa. Yli 30 vuotta vanhoja, Suomen ja Norjan v\u00e4lisi\u00e4 kalastus\u00e4\u00e4d\u00f6ksi\u00e4 tulee ajantasaistaa kest\u00e4v\u00e4n kalastuksen mukaiseksi. Kalastajat ymm\u00e4rt\u00e4v\u00e4t luonnonoloista johtuvat lohikantojen ja -saaliiden vaihtelut, mutta kalastuksen s\u00e4\u00e4tely aiheuttaa usein kritiikki\u00e4. N\u00e4\u00e4t\u00e4m\u00f6joen paikallisen kalastajan kommenttia \u201donko tyydytt\u00e4v\u00e4 siihen, mit\u00e4 ylh\u00e4\u00e4lt\u00e4 annetaan\u201d, voidaan tulkita n\u00f6yrtymisen\u00e4 \u201dLuojan\u201d edess\u00e4, mutta todenn\u00e4k\u00f6isemmin ilmaisu kertoo osattomuudesta kalastuss\u00e4\u00e4d\u00f6sten laadinnassa. Verkkokalastajalle saalislohi oli paikkasidonnainen kotitarve-ev\u00e4s, jolla oli kulttuurinen ja sosiaalinen kytkent\u00e4. Vakiintuneilla verkkopaikoilla kalastettiin sukulaisten kesken. Ulkopaikkakuntalainen vapakalastaja oli N\u00e4\u00e4t\u00e4m\u00f6jokivarteen hakeutuva er\u00e4veikko, yksin tai kalakaveriensa kanssa perinteisell\u00e4 er\u00e4retkell\u00e4. Vapalohi saattoi olla tavoitteena, harvemmin todentuen sy\u00f6t\u00e4v\u00e4ksi asti. Vapakalastajat, jotka tiesiv\u00e4t paikkakuntalaisten kalastuksellisista erityisoikeuksista, eiv\u00e4t ottaneet kantaa verkkokalastuksen yksitt\u00e4isiin s\u00e4\u00e4d\u00f6ksiin. Useille vapakalastajille N\u00e4\u00e4t\u00e4m\u00f6joen monikulttuuri oli yll\u00e4tys, jolloin joki esitettiin yksinomaiseksi vapakalastuskohteeksi. Vapakalastuskausi haluttiin edelleen pit\u00e4\u00e4 verkkopyyntikautta pidemp\u00e4n\u00e4, nykyisen s\u00e4\u00e4telyn tavoin. Molemmissa kalastajaryhmiss\u00e4 suhtauduttiin kuitenkin my\u00f6nteisesti vapa- ja verkkokalastuskauden my\u00f6hent\u00e4miseen, mik\u00e4 perustui l\u00e4hinn\u00e4 arvioon saalislohen ...", "keywords": ["mielipidetiedustelu", "s\u00e4\u00e4telyvaihtoehdot", "N\u00e4\u00e4t\u00e4m\u00f6joki", "kutukanta", "kalastajat", "Suomi", "ta1181", "lohi", "ta415"], "contacts": [{"organization": "L\u00e4nsman, Maija, Sepp\u00e4nen, Markku,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/ftluke:oai:jukuri.luke.fi:10024/543807"}, {"rel": "self", "type": "application/geo+json", "title": "ftluke:oai:jukuri.luke.fi:10024/543807", "name": "item", "description": "ftluke:oai:jukuri.luke.fi:10024/543807", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/ftluke:oai:jukuri.luke.fi:10024/543807"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-01-01T00:00:00Z"}}, {"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.