Map Viewing Service (WMS) of the dataset: Restricted areas of the PPRNs of the department of Southern Corsica

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（natural PPRs），《环境法典》（Environmental Code）第L562-1条将相关区域划分为两类：风险暴露区，以及虽未直接面临风险但需采取预判措施以规避风险加剧的区域。
依据危险等级的不同，每类区域均需遵守可强制执行的管控要求。现行法规通常将区域划分为以下三类：
1. "禁止建设区"（俗称"红区"）：此类区域危险等级较高，基本原则为禁止一切建设活动；
2. "规划管控区"（俗称"蓝区"）：此类区域危险等级中等，建设项目需遵守适配风险类型的管控要求；
3. 非直接风险暴露区域：该区域内的建设工程、施工项目、开发活动或农业、林业、手工业、商业、工业场所等可能加剧既有风险或引发新的风险，因此需遵守相关禁令或管控要求（参见《环境法典》第L562-1条）。此类区域仅适用于自然RPPs（natural RPPs）。