Overrun card acidifying deposition 2024

On this map, the extent of exceedance of the critical deposition value (KDW) for acidification of the European nitrogen sensitive habitats in the Habitats Directive Areas (SBZ-H) in Flanders is shown in the shades of yellow-orange red. The green areas are the nitrogen-sensitive habitats where the WFD is not in excess. The KDW is the amount of deposition (for acidification in acid equivalents per hectare per year or Zeq/ha.year) for a particular ecosystem under which, according to current scientific knowledge, no significant change in biodiversity occurs in the long term. A specific KDW is determined for each habitat type. The exceedance card was drawn up by the VITO on the basis of the following data: (A) The modelled depositions of acidifying substances based on VLOPS23, using emission and meteorological data from the year 2021; (B) The BWK habitat card version 2023; (C) Preliminary search zones 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 are also available as KDW card version 2024.本地图展示了比利时法兰德斯地区《欧洲生境指令》划定区域（SBZ-H）内欧洲氮敏感生境因酸化作用超过临界沉降值（critical deposition value, KDW）的范围，以黄-橙-红渐变色调呈现。绿色区域为未超出《水框架指令》（Water Framework Directive, WFD）阈值的氮敏感生境。临界沉降值（KDW）指特定生态系统的沉降量（以每年每公顷酸当量计，即Zeq/ha·year），根据当前科学认知，在此沉降量下该生态系统的生物多样性不会发生长期显著变化。每一类生境类型均对应专属的临界沉降值。本超标地图由佛莱芒技术研究院（VITO）基于以下数据编制完成：（A）基于VLOPS23模型的酸化物质沉降模拟结果，所用排放与气象数据取自2021年；（B）2023版BWK生境卡片；（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自然保护目标（适配性管理）。此外，地图图层B、C、D亦已更新至2024版KDW地图套件。