Surface issue of a PPRN (PPRI de la Risle) in the department of Orne(shp)

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，受险对象包括受灾害威胁、且可能遭受灾害影响或损毁的人员、财产、活动、文化遗产或环境遗产要素。某一议题对灾害的敏感度被称为脆弱性（vulnerability）。本对象类涵盖了风险预防计划（Risk Prevention Plan，RPP）研究中涉及的全部议题。所谓议题，是一类带有时间标记的对象，其是否被纳入考量取决于RPP的目标，以及其针对所研究灾害的脆弱性。因此，某一RPP议题是否被纳入考量，需依据所应对的灾害类型而定。在议题分析阶段，上述要素构成了在研究区域及其周边开展RPP编制所需的土地覆盖相关认知基础。本议题数据呈现了风险预防计划编制阶段，受灾害影响的财产与人员的示意性且非穷尽性快照。该数据在RPP获批后不再进行更新。实际应用中该类数据已不再直接使用，而是根据需求通过最新数据源重新计算相关议题。