Map Viewing Service (WMS) of the dataset: Issue of the Plan for the Prevention of Predictable Natural Flood Risks of the Indre Valley in the Indre-et-Loire

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 or near the study area, at the time of the analysis of the issues.

The data on issues represent a (figible and non-exhaustive) photograph of assets and individuals 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，承险体（stakes）指受某一灾害威胁、且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定义为“易损性（vulnerability）”。

本对象类别涵盖了风险预防计划（Risk Prevention Plan，简称RPP）研究中涉及的全部研究对象（issue）。此处的研究对象为带有时间属性的实体，其是否被纳入评估取决于RPP的研究目标，以及其针对所研究灾害的易损性。因此，是否将某一RPP研究对象纳入分析，需结合所针对的灾害类型而定。

上述要素构成了在研究对象分析阶段，研究区域内或其邻近区域开展RPP编制工作所需的土地覆盖认知基础。

该研究对象数据集呈现了风险预防计划编制阶段内，暴露于各类灾害中的资产与个体的（可具象化且非穷尽的）现状快照。该数据集在RPP获批后不再更新，实际应用中也不再直接沿用：研究人员会根据实际需求，结合最新数据源重新计算研究对象的相关信息。