Map Viewing Service (WMS) of the dataset: Specific issues of the PPRN of the Lézarde catchment area — Seine-Maritime

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，受险对象指受危险源威胁、并可能因此遭受影响或损害的人员、财产、活动、文化或环境遗产要素。某一对象对危险源的敏感程度，被定义为“易损性（vulnerability）”。 该对象类别涵盖了风险预防计划（Risk Prevention Plan, RPP）研究中涉及的全部研究对象。此处的“研究对象（issue）”为一类具有时间属性的实体，其是否被纳入考量取决于风险预防计划的目标，以及其针对所研究危险源的易损性。因此，是否将某一RPP研究对象纳入分析，需结合当前针对的危险源类型而定。 在开展研究对象分析的阶段，上述要素构成了研究区域及其邻近区域内制定风险预防计划所需的土地覆被认知基础。 该类研究对象数据，是风险预防计划编制阶段受危险源威胁的资产与人员状况的（清晰但非穷尽）快照。该数据在风险预防计划获批后不再更新，实际应用中已不再直接使用：研究对象会根据需要结合最新数据源重新计算生成。