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          <r:AttributeValue>Department of Soil and Environment, Swedish University of Agricultural Sciences</r:AttributeValue>
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            <a:FirstGiven>Louise</a:FirstGiven>
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              <r:String>Louise Malmquist</r:String>
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        <r:String xml:lang="sv">En 50 m spatial representation av täckdikade jordbruksarealer i centrala och södra Sverige</r:String>
        <r:String xml:lang="en">A 50 m spatial representation of probable subsurface drained arable land in central and southern Sweden</r:String>
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          <r:String xml:lang="sv">Sveriges lantbruksuniversitet</r:String>
          <r:String xml:lang="en">Swedish University of Agricultural Sciences</r:String>
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      <r:Publisher>
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          <r:String xml:lang="sv">Sveriges lantbruksuniversitet</r:String>
          <r:String xml:lang="en">Swedish University of Agricultural Sciences</r:String>
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        <r:SimpleDate>2025-09-08</r:SimpleDate>
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        <r:IdentifierContent>10.5878/veb2-nh54</r:IdentifierContent>
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      <r:Content xml:lang="sv">Genom den ökade expansionen av jordbruksmark i Sverige har dränering varit en viktig del av markförvärv för att hålla markfuktigheten tillräcklig för marktillgänglighet och grödoproduktion. Ökad omfattning och frekvens av extrema väderhändelser, såsom hög nederbörd och hydrologiska översvämningar, har redan setts påverka grödoproduktionen under senare år. Detta har satt press på den ökande efterfrågan på grundliga dräneringssystem.

Medan data om öppna diken och regionala dräneringssystem är lättillgängliga, är data om markdränering knapphändiga. Därför presenterar denna datauppsättning den första geografiska platsen för uppskattade tegeldränerade fält i södra och centrala Sverige, baserat på länsvis statistik med 50*50 m upplösning.

Detta dataset beskriver en spatial förmodad utbredning av täckdikad jordbruksareal i centrala till södra Sverige framtaget genom kombination av  lutning och dräneringsklass baserad på lerhalt och avgränsad av statistik över täckdikad areal från 2016.  


Dokumentationen innehåller:
README: Beskrivning av kartor och referenser som datasetet baserats på; vilka filer som ingår och deras innehåll; referenser till metodbeskrivning och sammanställda resultat från datasetet.

SubsurfaceDrainage_Dataset-description_2025-06-23: Beskriver syftet med datasetets ursprung, metod samt valideringsresultat.

CountywiseTileDrainArea_Code: R-kod för framtagandet av de länsvisa dräneringskartor som utgör det publicerade datasetet.</r:Content>
      <r:Content xml:lang="en">Throughout increased expansion of farmland in Sweden, drainage have been an important part for land acquisition to keep soil moisture levels sufficient for land accessibility and crop production. Increased magnitude and frequency of extreme weather events such as high precipitation events and hydrological floods have already been seen affecting crop production in recent years. Hence putting pressure on increasing demand for thorough drainage systems.

While data on open ditch- and regional drainage systems is readily available, data on subsurface drainage is scarce. Hence, this dataset presents the first spatial location of estimated tile-drained fields in Southern-central Sweden, based on county-wise statistics at 50*50 m resolution.

This dataset show spatial coverage of probable subsurface drained agricultural area in central to southern Sweden. The dataset is created by combining slope and soil drainage class based on clay content, and the area limited by statistics from 2016 over county wise determined area of subsurface drainage.

The documentation contains:
README: Description of maps and references on which the dataset is based; which files are included and their contents; references to method description and compiled results from the dataset.

SubsurfaceDrainage_Dataset-description_2025-06-23: Describes the purpose of the dataset's origin, method and validation of results.

CountywiseTileDrainArea_Code: R-code used for the creation of the tile drainage maps per county included in this dataset.</r:Content>
    </r:Abstract>
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        <r:URN>urn:ddi:se.researchdata:2025-187.TopicalCoverage:2.0</r:URN>
        <r:Subject xml:lang="en" controlledVocabularyID="40101" controlledVocabularyName="Standard för svensk indelning av forskningsämnen 2025">Agricultural Science</r:Subject>
        <r:Subject xml:lang="sv" controlledVocabularyID="40101" controlledVocabularyName="Standard för svensk indelning av forskningsämnen 2025">Jordbruksvetenskap</r:Subject>
        <r:Subject xml:lang="en" controlledVocabularyID="farming" controlledVocabularyName="INSPIRE topic categories">Farming</r:Subject>
        <r:Subject xml:lang="sv" controlledVocabularyID="farming" controlledVocabularyName="INSPIRE topic categories">Areella näringar</r:Subject>
        <r:Keyword xml:lang="en" controlledVocabularyID="8168" controlledVocabularyName="GEMET">subsoil drainage</r:Keyword>
        <r:Keyword xml:lang="sv" controlledVocabularyID="8168" controlledVocabularyName="GEMET">täckdikning</r:Keyword>
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        <r:Keyword xml:lang="sv" controlledVocabularyID="af" controlledVocabularyName="INSPIRE Spatial Data Themes">Jordbruks- och vattenbruksanläggningar</r:Keyword>
        <r:Keyword xml:lang="en" controlledVocabularyID="c_25598" controlledVocabularyName="AGROVOC">tile drainage</r:Keyword>
        <r:Keyword xml:lang="en" controlledVocabularyID="c_7549" controlledVocabularyName="AGROVOC">sweden</r:Keyword>
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        <r:URN>urn:ddi:se.researchdata:2025-187.SpatialCoverage:2.0</r:URN>
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          <r:Content xml:lang="en">A 50 m spatial representation of probable subsurface drained arable land in central and southern Sweden. The dataset covers the counties Blekinge, Dalarna*, Gävleborg, Gotland, Halland,Jönköping, Kalmar, Kronoberg, Örebro, Östergötland, Skåne, Södermanland, Stockholm, Uppsala, Värmland, Västmanland och  Västra Götaland.

*Dalarna is included but should be interpreted with caution due to geographically limited data availability for the indata in Dalarna county</r:Content>
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        <r:CountryCode>SE</r:CountryCode>
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        <r:URN>urn:ddi:se.researchdata:2025-187.TemporalCoverage:2.0</r:URN>
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          <r:StartDate>2016</r:StartDate>
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