Dataset Direct Download Service (WFS): Natural Risk Prevention Plan “ground movements” — Regulatory Area — Gagny Municipality (93032)

Risk Prevention Plans (RPPs) are the key government instrument for risk prevention. Their objective is to control development in areas at risk. The development of a risk prevention plan generates a set of spatial data organised into several data sets. The same PPR may include spatial datasets containing: • main PPR encompassing perimeters (study perimeter, prescription perimeter, regulated scope); • restricted areas of the plan once approved. RPP regulations generally distinguish between ‘construction ban areas’, so-called ‘red areas’, where the hazard level is high and where the general rule is the construction ban; ‘areas subject to requirements’, known as ‘blue zones’ where the hazard level is medium and projects are subject to requirements adapted to the type of issue and areas not directly exposed to risks but subject to prohibitions or prescriptions; • hazard areas represented on the map of hazards used for risk analysis by crossing with the stakes, specifying for each zone the level of hazards to which it is exposed; • stakes (persons, property, activities, cultural or environmental heritage elements) threatened by a hazard and likely to be affected or damaged by it; • origins of risk, i.e. the real-world entity which, through its presence, represents a potential risk. This entity may be characterised by a name, a reference to an external object or a geographical object that locates the actual entity causing the risk.风险预防计划（Risk Prevention Plans，RPPs）是政府开展风险预防工作的核心工具，其核心目标为管控风险区域内的开发活动。编制风险预防计划会生成一系列空间数据（spatial data），并将其划分为多个数据集。 同一份风险预防计划（PPR，Risk Prevention Plan）可包含以下空间数据集： • 主风险预防计划覆盖边界：包含研究边界、规划审批边界与监管范围； • 计划获批后的限制开发区域。风险预防计划的监管规则通常会区分以下三类区域：一是"禁建区"，即所谓的"红色区域"，此类区域灾害等级较高，通用规则为禁止建设；二是"受管控区域"，又称"蓝色区域"，此类区域灾害等级为中等，项目需根据问题类型适配管控要求；三是未直接受风险影响但仍受禁令或管控要求约束的区域； • 灾害风险区域：标注于灾害风险图中，用于结合承灾体开展风险分析，并明确各区域所面临的灾害等级； • 承灾体（stakes）：指受灾害威胁、可能遭受影响或破坏的人员、财产、活动、文化或自然遗产要素； • 风险源（origins of risk）：指因自身存在而构成潜在风险的现实实体。该实体可通过名称、外部对象引用或定位致险实体的地理对象进行标识。