Simple download service (Atom) of the dataset: 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条第I款第1目：[……] 湿地（Wetland）指无论是否经人工经营，长期或临时被淡水、咸水或半咸水淹没、渍水的土地；若存在植被，则至少在一年中的部分时段以亲水植物（hygrophilic plants）为优势种[……] 同一法典第R.211-108条规定： • 所用判定标准关联与天然水体长期滞留相关的土壤形态特征，以及亲水植物的潜在存在情况； • 若不存在亲水植被，则仅需通过土壤形态特征即可判定为湿地； • 湿地的范围划定可依据洪水或地下水位，亦或潮汐频率与振幅进行。 野外诊断（Field diagnostics）指具备湿地水文标准（洪水或频繁渍水）、土壤标准（呈现水饱和环境的土壤）或植物学标准（以亲水植物为优势种的植被）的区域。此类判定均需通过野外勘测验证上述标准。该类划定范围较湿地更为具体，但并非总能覆盖全部湿地。实际应用中，若采用不同方法（植物学或土壤学（pedology）途径），部分湿地可能无法被识别。 若依据《环境法典》的定义，并结合2008年6月24日、2009年10月1日修订的政令中明确的标准，对实际湿地进行范围划定，则此类划定被称为法定划定湿地，或"水政策"湿地。此类区域需满足土壤与植物学标准，但若现存植被非"原生自发"植被，则仅需以土壤标准即可判定为湿地（详见2017年6月26日关于湿地特征表征的技术说明，尤其是"原生自发"植被的定义）。 若涉及工程项目，则由申请人负责证明其项目用地范围内不存在湿地；若存在湿地，则需通过法定程序完成范围划定。仅依靠项目征地范围内的现有湿地分布图，不足以证明该区域无湿地存在。