Map Viewing Service (WMS) of the dataset: Regulatory zoning of the PPR field movement of Coteau Saumurois

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.

针对自然PPRs（PPRs），《环境法典》（Environmental Code）于L562-1条款中划定了两类区域：风险暴露区域，以及虽未直接暴露于风险但可采取相关措施以避免风险加剧的区域。
根据危险等级的不同，每类区域均需遵守可强制执行的管控要求。相关法规通常将区域划分为三类：
1. “禁止建设区”，亦称“红色区域”：此类区域危险等级较高，原则上禁止一切建设活动；
2. “指定管控区”，亦称“蓝色区域”：此类区域危险等级中等，相关项目需根据风险类型适配相应管控要求；
3. 虽未直接暴露于风险，但各类建设工程、开发活动或农林牧渔、手工业、商业、工业经营等可能加剧既有风险或引发新风险的区域，需遵守相关禁令或管控要求（参见《环境法典》L562-1条款）。该第三类区域仅适用于自然RPPs（RPPs）。