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On distingue plusieurs types de pression d'azote : l'azote total qui regroupe l'azote organique (majoritairement issu d'effluents d'élevage et l'azote organique autre tel que les déchets verts) et l'azote minéral acheté par les exploitants 
Attention, les déclarations sont réalisées par exploitation, les pressions d'azote sont donc estimées comme réparties homogènement sur le parcellaire de l’exploitation.

Pour des informations, consultez : http://mesdemarches.agriculture.gouv.fr/demarches/collectivite-territoriale-ou/exercer-une-mission/article/declarer-des-flux-annuels-d-azote-402?id_rubrique=63, et http://www.bretagne.developpement-durable.gouv.fr/sixieme-programme-d-actions-regional-directive-r1303.html.

Chaque année, cette table sera complétée par les nouvelles valeurs d’indicateurs à compter du mois d’avril N+1.</gco:CharacterString>
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                  </gmd:date>
                </gmd:CI_Citation>
              </gmd:specification>
              <gmd:explanation>
                <gco:CharacterString>Non Evalué</gco:CharacterString>
              </gmd:explanation>
              <gmd:pass>
                <gco:Boolean>false</gco:Boolean>
              </gmd:pass>
            </gmd:DQ_ConformanceResult>
          </gmd:result>
        </gmd:DQ_DomainConsistency>
      </gmd:report>
      <gmd:lineage>
        <gmd:LI_Lineage>
          <gmd:statement>
            <gco:CharacterString>La pression d'azote des exploitations est calculée directement par Télésillage déclaration selon la méthode inscrite dans l'annexe III de l'arrêté du 7 mai 2012 relatif aux actions renforcées à mettre en œuvre dans certaines zones ou parties de zones vulnérables en vue  de la protection des eaux contre  la pollution par les nitrates d’origine agricole.

La pression d'azote moyenne pour un territoire nécessite :
1/ de faire un appariement de la DFA et des déclarants PAC afin de répartir le parcellaire de l’exploitation par territoire.
2/ de calculer via le registre parcellaire graphique les surfaces agricoles de l'exploitation dans le territoire
3 / de multiplier la somme des pressions d'azote par la somme des surfaces de tous les déclarants dans le territoire

Les indicateurs valorisés sont les suivants : 
- les pressions d'azote (quantité d'azote épandu / hectare)
ptot = pression d'azote total 
pee = pression d'azote issu des effluents d'élevage
pautres = pression d'azote organique non issu d'effluents d'élevage (boues, algues vertes, déchets verts)
pmin = pression d'azote minéral
- les quantités d'azote épandu sur le territoire
ntot = quantité d'azote total
norgan = quantité d'azote organique animal
norgnan = quantité d'azote organique non animal
nmin = quantité d'azote minéral
- les pressions d'azote de référence (seuil départemental à ne pas dépasser, sinon le dispositif de surveillance s'applique)</gco:CharacterString>
          </gmd:statement>
        </gmd:LI_Lineage>
      </gmd:lineage>
    </gmd:DQ_DataQuality>
  </gmd:dataQualityInfo>
</gmd:MD_Metadata>

