Map Viewing Service (WMS) of the dataset: Restricted zone of the PPRN of the municipality of Aytre (Boundary rivers — erosion cotiere and marine submersion) — Charente-Maritime

For natural PPRs, the Environmental Code defines two categories of zones (L562-1): risk-exposed areas and areas that are not directly exposed to risks but where measures can be foreseen to avoid exacerbating the risk. Depending on the hazard level, each area is subject to an enforceable settlement. The regulations generally distinguish three types of zones: 1- ‘Building prohibited areas’, known as ‘red areas’, where the hazard level is high and the general rule is the prohibition on construction; 2- ‘prescribed areas’, known as ‘blue zones’, where the hazard level is average and the projects are subject to requirements adapted to the type of issue; 3- areas not directly exposed to risks but where constructions, works, developments or farms, agricultural, forestry, craft, commercial or industrial could aggravate risks or cause new ones, subject to prohibitions or requirements (cf. Article L562-1 of the Environmental Code). The latter category applies only to natural RPPs.针对天然PPRs（natural PPRs），《环境法典（Environmental Code）》第L562-1条划定了两类区域：风险暴露区，以及虽未直接面临风险但可通过预先采取措施避免风险加剧的区域。 依据危险等级的差异，各区域需遵循可强制执行的合规要求。相关法规通常将区域划分为三类： 1. 建筑禁止区（又称红色区域（red areas））：该区域危险等级较高，通用规则为禁止建设； 2. 合规管控区（又称蓝色区域（blue zones））：该区域危险等级为中等，相关项目需遵循适配问题类型的合规要求； 3. 非直接风险暴露区：该区域虽未直接面临风险，但各类建设工程、开发活动或农业、林业、手工业、商业及工业类经营场所可能加剧既有风险或引发新风险，需遵循相关禁止性规定或合规要求（参照《环境法典（Environmental Code）》第L562-1条）。 该第三类区域仅适用于天然RPPs（natural RPPs）。