Restricted areas of the plan for the prevention of natural hazards of the municipality of VERDUN

The regulated zoning of the Natural Hazard Prevention Plan (PPRN) is digitised in accordance with the national requirements of COVADIS.
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.

本数据集依据COVADIS的国家规范要求，完成了《自然灾害预防规划》（Natural Hazard Prevention Plan, PPRN）的监管区划数字化工作。针对自然类PPRN，《环境法典》将区划划分为两类（L562-1）：风险暴露区域，以及虽未直接暴露于风险但可采取措施避免风险加剧的区域。根据灾害等级差异，各区域均需遵循强制性建设管控规则。相关法规通常将区划划分为三类：1. ‘禁止建设区域’，又称‘红色区域’：此类区域灾害等级较高，通用规则为禁止一切建设活动；2. ‘管制建设区域’，又称‘蓝色区域’：此类区域灾害等级为中等，建设项目需符合适配于风险类型的相关管控要求；3. 虽未直接暴露于风险，但建设、工程、开发项目或农场、农业、林业、手工业、商业、工业相关活动或设施可能加剧既有风险或引发新风险的区域，需遵守相关禁止性规定或管控要求（详见《环境法典》L562-1条）。该类区划仅适用于自然类RPPs。