Exceedance map fertilising nitrogen deposition 2024

This map shows the extent to which the critical deposition value (KDW) for eutrophication (or fertilisation) of the European nitrogen-sensitive habitats to be protected in the Habitats Directive Areas (Habitats Directive Areas) in Flanders has been exceeded in the shades of yellow-orange-red. The green areas are the nitrogen-sensitive habitats in which the WFD is not exceeded. The KDW is the amount of deposition (kilograms of nitrogen per hectare per year or kg N/ha.year) for a given ecosystem under which, according to current scientific knowledge, there is no significant change in biodiversity in the long term. A specific KDW has been determined for each habitat type. The exceedance map has been drawn up by VITO on the basis of the following data: (A) The modelled depositions of eutrophicants based on VLOPS24, using emission data from 2022 and meteorological data from the year 2017; (B) The BWK habitat map version 2023; (C) The preliminary search areas for conservation objectives - version 0.2 and (D) the nature targets (appropriate management) as included in the nature management plans, version January 2024. The map layers B, C and D together are also available as KDW map version 2024.本地图通过黄-橙-红色阶，展示了法兰德斯地区《生境指令》保护区（Habitats Directive Areas）内需加以保护的欧洲氮敏感生境，其富营养化（或施肥作用）临界沉积值（critical deposition value，KDW）的超标状况。绿色区域代表未超出《水框架指令》（Water Framework Directive，WFD）管控阈值的氮敏感生境。KDW指在当前科学认知下，特定生态系统长期内生物多样性不会发生显著变化的氮沉积量，单位为千克氮每公顷每年（kg N/ha·a）。每一类生境类型均已确定专属的KDW临界沉积值。本超标地图由弗拉芒技术研究院（VITO）基于以下数据编制完成：（A）基于VLOPS24模型模拟的富营养化污染物沉积量，所用排放数据取自2022年，气象数据取自2017年；（B）2023版BWK生境地图；（C）0.2版保护目标初步搜索区域；（D）2024年1月版自然管理计划中纳入的适配性管理范畴自然保护目标。上述B、C、D三个图层经整合后，亦可作为2024版KDW地图对外提供。