Map visualisation service (WMS) of the dataset: Restricted area of the PPR Flood of Ligoure

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 may be foreseen to avoid exacerbating the risk. Depending on the hazard level, each area is subject to an enforceable settlement. Regulations generally distinguish three types of zones: 1- “Building Prohibition Zones”, so-called “Red Zones”, when the hazard level is strong and the general rule is the construction ban; 2- “prescription zones”, known as “blue zones”, where the hazard level is average and projects are subject to requirements adapted to the type of issue; 3- areas not directly exposed to risks but where constructions, structures, development or agricultural, forestry, artisanal, commercial or industrial activities could exacerbate 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 PPRs.针对自然PPR（Natural PPRs），《环境法典》划定了两类区域（条款编号L562-1）：风险暴露区域，以及虽未直接面临风险但需采取措施以避免风险加剧的区域。 根据灾害等级的不同，每类区域均需遵循可强制执行的处置方案。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"）：当灾害等级较高时，通用规则为禁止开展建设活动； 2. 合规管控区（又称"蓝色区域"）：当灾害等级为中等时，建设项目需遵循适配于风险类型的相关要求； 3. 虽未直接面临风险，但建设、构筑物搭建、开发活动或农业、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的区域，此类区域需遵守禁止性规定或相关要求（详见《环境法典》L562-1条款）。该类区域仅适用于自然PPR。