Dataset Direct Download Service (WFS): Inventory of wetlands of the Chiers-Meuse hydrographic unit in the Meuse department

According to L.211-1 of the Environmental Code, I. — 1° [...] Wetland means land, whether or not operated, usually flooded or engrown with fresh water, salted or brackish on a permanent or temporary basis; vegetation, where it exists, is dominated by hygrophilic plants for at least part of the year; [...] Article R.211-108 of the same code states: • the criteria to be used relate to soil morphology linked to the prolonged presence of original water natural and possible presence of hygrophilic plants, • in the absence of hygrophilic vegetation, soil morphology is sufficient to define a wetland, • the delimitation of wetlands is carried out using flood or groundwater levels, or tidal frequencies and amplitudes. Field diagnostics refer to areas with hydrological criteria (flooding or frequent waterlogging) and/or soil (soil showing a water-saturated environment) and/or botanical (vegetation dominated by hygrophilic plants) of wetlands. They always use field surveys to justify the verification of these criteria. These areas are more specific than wetlands, but are not always exhaustive. Indeed, depending on the methodology used (flora and/or pedology), some wetlands may not be identified. When actual wetlands are demarcated according to the definition of the Environmental Code and on the basis of the criteria detailed in the Order of 24 June 2008 as amended on 1 October 2009, then it is referred to as regulatory delimitation or “water policy” wetlands. These areas are defined if the soil and flora criteria are verified, except where the vegetation present is not “spontaneous”. In this case, the soil criterion alone is sufficient to determine the wetland (see Technical Note of 26 June 2017 on the characterisation of wetlands — in particular for the definition of “spontaneous” vegetation). In the case of a project, it is up to the petitioner to prove that his project is not wetland or, if not, to delimit them by regulation. Maps of predominantly wetlands available on the project’s right-of-way are not sufficient to prove the absence of wetlands.根据《环境法典（Environmental Code）》第L.211-1条：1° […] 湿地（wetland）是指无论是否经人工经营，常年或间歇性被淡水、盐水或咸淡水淹没、浸渍的土地；若存在植被，则至少在一年中的部分时段以湿生植物（hygrophilic plants）为优势种；[…] 同法典第R.211-108条规定： • 适用标准涉及与天然水体长期存留相关的土壤形态，以及湿生植物的自然存在或潜在存在； • 若不存在湿生植被，则仅凭土壤形态即可认定湿地； • 湿地的界址划定可依据洪水或地下水位，或潮汐频率与幅度进行。 现场诊断（field diagnostics）指的是符合湿地水文标准（洪水或频繁渍涝）、土壤标准（土壤处于水饱和状态）或植物学标准（以湿生植物为优势植被）的区域。此类区域的认定均需通过野外勘测以验证上述标准是否符合要求。此类区域的界定范围比湿地更为具体，但并非总能覆盖所有湿地。事实上，依据所采用的调查方法（植物学或/和土壤学），部分湿地可能无法被识别出来。 若依据《环境法典》的定义，并结合2008年6月24日政令（经2009年10月1日修订）中规定的标准划定实际湿地，则此类划定方式被称为合规界址划定，或称为‘水政策湿地（water policy wetlands）’。此类区域的认定需满足土壤与植物学标准，但若现有植被并非‘自然原生（spontaneous）’植被，则仅需满足土壤标准即可认定为湿地（详见2017年6月26日发布的《湿地特征认定技术说明》——尤其是其中关于‘自然原生’植被的定义）。 若涉及项目申请，则由申请人自行证明其项目区域不属于湿地；若属于湿地，则需按照合规标准完成界址划定。仅凭借项目用地范围内现有的主要为湿地的地图，不足以证明该区域不存在湿地。