Map Viewing Service (WMS) of the dataset: Surface challenge of a PPRN (PPRI de la Vée) in the department of Orne

Generally speaking, the stakes are people, property, activities, cultural or environmental heritage elements, threatened by a hazard and likely to be affected or damaged by it. The sensitivity of an issue to a hazard is called “vulnerability.”This object class brings together all the issues that have been addressed in the RPP study. An issue is a dated object whose consideration depends on the purpose of the RPP and its vulnerability to the hazards studied. A PPR issue can therefore be considered (or not) depending on the type or types of hazard being addressed. These elements form the basis of knowledge of the land cover necessary for the development of the RPP, in the study area or near it, at the time of the analysis of the issues. The data on the issues represent a photograph (figential and not exhaustive) of the property and of the people exposed to hazards at the time of the development of the risk prevention plan. This data is not updated after approval of the RPP. In practice they are no longer used: the issues are recalculated as necessary with up-to-date data sources.

一般而言，风险受体（stakes）指受灾害威胁、并可能因此遭受影响或损毁的人员、财产、活动、文化或环境遗产要素。某一对象对灾害的敏感程度被称为“脆弱性（vulnerability）”。本对象类涵盖了风险预防计划（Risk Prevention Plan，RPP）研究中涉及的全部相关议题。所谓“议题”，是一类带时间标记的对象，其是否纳入考量取决于RPP的研究目的，以及该对象在所研究灾害中的脆弱性。因此，RPP相关议题是否被纳入分析，需结合当前所针对的灾害类型而定。在开展议题分析阶段，上述要素构成了研究区域及其周边区域编制RPP所需的土地覆被（land cover）基础认知。相关议题数据展现了风险预防计划编制之时，受灾害威胁的财产与人员状况的一幅代表性且非穷尽性的快照。该类数据在RPP获批后不再更新，实际应用中也不再直接沿用，而是会根据需要结合最新数据源重新计算相关议题。