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| | <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 |
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| | <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> |
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| | 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 |
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| | 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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| | <H3>More information</H3> |
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| | <P class="pubparagraph"><span class="pubAuthor">Britz W .</span>:<BR> |
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| | <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 |
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