Dataset Direct Download Service (WFS): Plan of Prevention of Natural Risks of Field Movement — Regulatory Area — Municipality of Aubervilliers (93001)

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，以下简称PPRs）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，并归类为多个数据集。
同一份PPR可包含以下空间数据集：
• 核心PPR，涵盖研究边界、法定边界、管控范围等各类边界；
• 计划获批后的管控区域。PPR的管控规则通常区分以下区域类型：一是“禁建区”，即所谓“红色区域”，此类区域灾害风险等级较高，原则上禁止建设；二是“约束建设区”，又称“蓝色区域”，包含两类子区域：一类为灾害风险等级中等、建设项目需根据问题类型适配相应管控要求的区域；另一类为未直接暴露于风险之下，但仍需遵守禁令或法定要求的区域；
• 风险分布图上标注的风险区域，该分布图通过与承灾体叠加分析开展风险研判，并明确各区域所承受的风险等级；
• 承灾体（stakes）：指受灾害威胁、可能遭受影响或损失的人员、财产、活动、文化或自然遗产要素；
• 风险源：即现实中因其存在而构成潜在风险的实体。该实体可通过名称、外部对象引用或用于定位实际致险实体的地理对象进行标识。