Map Viewing Service (WMS) of the dataset: PPRN of Loyettes

For natural RPPs, the Environmental Code defines two categories of areas
(L562-1): risk-prone areas and areas that are not directly
exposed to risks but on which measures may be provided for
avoid increasing the risk. Depending on the hazard level, each area is subject to a
enforceable regulation. The regulations generally distinguish three types of zones:
1- “Building prohibited areas”, so-called “red zones”, when the level of
D’aléa is strong and that the general rule is the prohibition on construction; 2- “areas”
subject to requirements, referred to as ‘blue zones’, where the hazard level is average
and that projects are subject to requirements adapted to the type of issue; 3- Areas
not directly exposed to risks, but where constructions, works,
development or agricultural, forestry, artisanal, commercial or
industrials could aggravate risks or cause new, submitted
prohibitions or prescriptions (cf. Article L562-1 of the Environmental Code). This
last category applies only to natural RPPs.

针对自然RPPs，《环境法典》（第L562-1条）划定了两类核心区域：易受风险影响区域，以及未直接承受风险但可采取措施防止风险加剧的区域。根据危险等级差异，每类区域均需遵循强制性监管法规。此类法规通常将区域划分为三类：
1. 禁止建设区（俗称"红色区域"）：当灾害等级（D'aléa）较高时，通用规则为严禁任何建设行为；
2. 合规约束区（俗称"蓝色区域"）：此类区域灾害等级为中等，建设项目需遵守适配具体风险类型的专项合规要求；
3. 间接风险关联区：此类区域未直接暴露于风险之中，但建设、工程、开发或农业、林业、手工业、商业及工业活动可能加剧既有风险或引发新风险，需遵守相关禁止性规定与管控要求（详见《环境法典》第L562-1条）。
该最后一类区域仅适用于自然RPPs。