Map Viewing Service (WMS) of the dataset: Regulatory zoning of the Forest Fire Risk Prevention Plan (PPRIF) of the municipality of Borgo in Upper Corsica

Plans for the prevention of natural hazards were established by the Act of 2 February 1995 on strengthening the protection of the environment. They are the key instrument of the State in the field of risk prevention. Their objective is to monitor the development of urban planning and land use in areas at risk.
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).

1995年2月2日出台的《加强环境保护法案》确立了自然灾害防治规划制度，该制度是国家风险防治领域的核心管控工具，其目标为对风险区域内的城市规划编制与土地利用开发活动实施监管。
针对自然风险防治规划（PPR），《环境法典》划定了两类区域（条款编号L562-1）：直接受风险影响区域，以及虽未直接暴露于风险之中，但可采取措施避免风险加剧的区域。
依据灾害等级差异，每类区域均需遵循可强制执行的管控规则。相关法规通常将区域划分为三类：
1. "建筑禁建区"（又称"红色区域"）：该区域灾害等级较高，原则上禁止一切建设活动；
2. "规制建设区"（又称"蓝色区域"）：该区域灾害等级中等，建设项目需落实适配风险类型的合规要求；
3. 未直接暴露于风险之中，但各类建设、工程、开发活动或农业、林业、手工业、商业及工业经营场所可能加剧既有风险或引发新风险的区域，需遵循相应禁止性规定或合规要求（详见《环境法典》L562-1条款）。