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| <HTML> | ===== Agricultural land use and environmental indicators at 1x1 km grid resolution- Nitrogen Balances ===== |
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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> | |
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| 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 | {{ :capri:concept:nbal.jpg?520|}} |
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| either run-off, leach below the root zone or be stored in soils.</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 [[capri:concept:SpatFert|fertilizer application rates]]. |
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| | The **gross balance** is defined as the difference between the different **nitrogen inputs**: |
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| | * Nitrogen from mineral fertilizer |
| | * Nitrogen from manure |
| | * Nitrogen in crop residues |
| | * Nitrogen from biological fixation by legmuninosae |
| | * Nitrogen from atompsheric deposition |
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| | and export by **harvested crop material**. In order to get a more refined pressure indicators on soils and water, an [[capri:concept:ammo|emission factor approach]] 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. |
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| <P><img src="images\farmGate.jpg" width="593"/></P> | {{:capri:concept:farmgate.jpg?600|}} |
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| | ==== More information ==== |
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| <hr style="color: 'blue'; height: '2'; text-align: 'left'"> | Britz W .:\\ //[[https://www.capri-model.org/docs/nitrogen_bal.pdf|Nitrogen Balances for EU27 at NUTS II level combing the farm gate and soil surface approach, JRC, 2007 (pdf, foils)]]// |
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| <H3>More information</H3> | Last Updated:Tuesday, October 28, 2008 |
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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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