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capri:concept:nbal [2011/04/11 12:30]
gocht
capri:concept:nbal [2011/04/11 12:41] (current)
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 +<​HTML>​
  
 +      <div id="​content"><​!-- Start Inhalt -->
 +         <​div class=rightwindow>​
 +<​H2><​a class="​intext"​ HREF="/​dokuwiki/​doku.php?​id=capri:​concept:​spatialdownscaling">​Agricultural land use and environmental indicators at 1x1 km grid resolution</​A><​BR>​ - Nitrogen Balances</​H2>​
 +<hr style="​color:​ '​blue';​ height: '​2';​ text-align: '​left';>​
 +Main Contributors:​ Wolfgang Britz, Heinz-Peter Witzke
 +<hr style="​color:​ '​blue';​ height: '​2';​ text-align: '​left';">​
 +<div style="​float:​right;​padding:​20px"><​a href="​images\nBal.jpg"><​img style="​text-decoration:​ none;​border:​ none;color: white" src="​images\nBal.jpg"​ width="​500"/></​a></​div>​
 +<​P>​The nitrogen balances are calculated based on the combination of the soil surface and farm gate balance approach, and are closely linked to the estimation of
 +crop specific <a class="​intext"​ HREF="/​dokuwiki/​doku.php?​id=capri:​concept:​SpatFert">​fertilizer application rates</​a>​.<​P>​
 +<​P>​The <​B>​gross balance</​B>​ is defined as the difference between the different <​B>​nitrogen inputs</​B>:</​P>​
 +<ul>
 +    <​li>​Nitrogen from mineral fertilizer</​li>​
 +    <​li>​Nitrogen from manure</​li>​
 +    <​li>​Nitrogen in crop residues</​li>​
 +    <​li>​Nitrogen from biological fixation by legmuninosae</​li>​
 +    <​li>​Nitrogen from atompsheric deposition</​li>​
 +</ul>
 +<​P>​and export by <​B>​harvested crop material</​B>​. In order to get a more refined pressure indicators on soils and water, an <a class="​intext"​ HREF="/​dokuwiki/​doku.php?​id=capri_concept:​ammo">​ emission factor approach</​a>​
 +
 +estimates gaseous losses during manure storage and in stable as well as during application of organic and merinal fertilizer, and thus calculates the nitrogen which could
 +
 +either run-off, leach below the root zone or be stored in soils.</​P>​.
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 +<​P><​img src="​images\farmGate.jpg"​ width="​593"/></​P>​
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 +<hr style="​color:​ '​blue';​ height: '​2';​ text-align: '​left'">​
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 +<​H3>​More information</​H3>​
 +
 +
 +
 +<P class="​pubparagraph"><​span class="​pubAuthor">​Britz W .</​span>:<​BR>​
 +
 +<​I><​a HREF="​..\docs\nitrogen_bal.pdf"​ class="​intext">​Nitrogen Balances for EU27 at NUTS II level combing the farm gate and soil surface approach, JRC, 2007 (pdf, foils)</​a></​I></​p>​
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 +<font size=1>​Last Updated:​Tuesday,​ October 28, 2008
 +
 +</​font>​
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 +      </​div><​!-- Ende content -->
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