Potential nitrate discharges in kg N/(ha*a) according to § 8 AVV GEA of the reference parcels in NRW, as of 01/2022

The current agricultural N balance sheet surplus in kg N/(ha*a) is presented as the 4-year average of the period 2016-2019 per reference parcel. Data are based on the agricultural N balance sheet surplus per municipality for the period 2016-2019 (arithmetic mean) as determined by Appendix 4 AVV GEA by the DLWK. The conversion of the N-balance sheet surplus per municipality to the agricultural areas in the model grid (100 x 100 m) of the hydrological substance entry model GROWA+ NRW 2021 is carried out according to the interface RAUMIS/mGROWA-DENUZ-WEKU (see Annex 4) by LANUV NRW. The current N balances determined in this way (2016-2019) per reference parcel are issued per field block according to field block statistics NRW 2021. The data set contains the field blocks according to field block statistics NRW 2021 as polygons (Feature in geodatabase “GLDN Potential Nitratetraege-to-Par-8-AVV-GeA_EPSG25832_Geodatabase.gdb” and shape “GLDN-Potenzielle_Nitratetraege-to-Par-8-AVV-GeA_EPSG25832”)本数据集以千克氮/(公顷·年)（kg N/(ha*a)）为单位，呈现了2016-2019年时段内各参考地块的农业氮平衡盈余四年平均值。数据基于DLWK依据附录4 AVV GEA测算得出的2016-2019年各市镇农业氮平衡盈余（算术平均值）生成。随后，LANUV NRW依据接口RAUMIS/mGROWA-DENUZ-WEKU（详见附件4），将各市镇的氮平衡盈余转换至水文物质输入模型GROWA+ NRW 2021的100×100米模型网格对应的农业用地范围。按此方式测算得到的2016-2019年各参考地块当前氮平衡值，将依据北威州2021年地块统计数据（field block statistics NRW 2021）按地块单元分别发布。本数据集包含依据北威州2021年地块统计数据生成的地块单元多边形要素，存储于地理数据库（geodatabase）"GLDN Potential Nitratetraege-to-Par-8-AVV-GeA_EPSG25832_Geodatabase.gdb"的要素类"GLDN-Potenzielle_Nitratetraege-to-Par-8-AVV-GeA_EPSG25832"中。