Nitrogen area balance from agriculture at municipal level (2019)
Description
Nitrogen balances (N balances) are an important tool to quantify nitrogen emissions (nitrogen surpluses) from agriculture. To calculate the N-area balance, the N-input (to the utilised agricultural area) is compared with the N-output:
N-discharge – N-discharge = N-balance
As part of the nationwide basic emission monitoring, an N-area balance model is used, which was developed at the Johann Heinrich von Thünen Institute and adapted to the regional conditions in Lower Saxony.
The result is nitrogen area balances at municipal level calculated on the basis of agricultural statistics, which can be recalculated with each publication of the agricultural census or agricultural structure survey (every 3 to 4 years). The calculated N-area balance is expressed in [kg N/ha*a] in relation to the utilised agricultural area (excluding set-aside areas).
The N-area balances 2016 are an important basis for calculating the potential nitrate concentration in leachate. The potential nitrate concentration is used to estimate the leachate quality at the lower bound of the root space.
It should be noted that the data of the agricultural statistics on animal numbers and land use included in the N-area balances were collected on the basis of the head office principle and thus spatial displacements are possible.
Detailed method description see: Methodology_Basis_Emissionsmonitoring_LBEG.pdf
Resources
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https://nibis.lbeg.de/net3/public/ogc.ashx?NodeId=915&Service=WMS&Request=GetCapabilities& |
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- opendata
- inspireidentifiziert
- nibis-metadaten