PPRN Vaucluse Forest Fires (84) — Hazard Zone Synthesis

This sheet gives access to the localised data on the hazards of PPR approved forest fires in the Vaucluse. Hazard is the manifestation of a natural phenomenon such as floods or forest fires. It is studied by the state services, assisted by service providers and expert partners in the field, according to criteria specific to each of the phenomena. The study of the hazard makes it possible to develop the hazard map, which is one of the graphic documents of a PPRN. This map delimits the areas impacted by the natural phenomenon, distinguished by the intensity of the hazard, i.e. the level of danger encountered. The hazard map of a PPRN usually represents 3 types of hazard zones (i.e. 3 hazard levels): strong, medium and weak vagaries. Depending on the phenomenon studied, the exposed territory and the technical analysis tools, other hazard areas could be defined (e.g. residual hazard for flood hazard, very strong hazard for forest fire). For Vaucluse PPRif: very strong, strong and medium vagaries. The assessment of the level of intensity is not based on the same criteria according to natural phenomena, and it is important to consult the presentation note of a PPRN for the classification grid used. For PPR Forest Incendies, the assessment of hazards results from the estimation of the potential intensity of plant combustion, possibly modulated by the occurrence of a fire outbreak, at any point in the sector studied. It should be noted that two PPRifs in the department do not have the hazards in the form of localised vector data. It is recalled that the map of hazards of a PPRN does not directly entail planning constraints, unlike the regulatory zoning of a PPRN. However, this map is a geographical representation of the natural risk studied which deserves to be used as an element of information for the actors of the territory and the population, and where appropriate as an element of knowledge to prepare crises and adopt the right reflexes during an event. Data from the PPR Incendies of Forests that can be downloaded on Geo-IDE have been standardised according to the COVADIS standard. However, it is important to inform users of these data that their standardisation has led to changes in the number and designation of attributes of fields corresponding to the types of hazard zones. For this reason, the Vaucluse DDT has completed the WRPP Hazard Area data with a “NIVALEA” field, which keeps the complete information related to each of the final hazard maps of approved PPRFs. In order to avoid any misinterpretation of this PPR data, the user is strongly encouraged to consult the hazard maps contained in the paper files of approved PPRFs, which must remain the reference, and which are available in town hall or prefecture.本数据表可提供沃克吕兹省（Vaucluse）境内经PPR审批的森林火灾灾害相关本地化数据。 灾害是洪水、森林火灾等自然现象的具体表现形式。该类灾害由国家部门牵头开展研究，并由领域内服务提供商与专家伙伴协助，依据各类灾害专属的评判标准进行分析。灾害研究可用于编制灾害风险图，该图是自然风险预防计划（PPRN）的可视化文档之一。该风险图划定受该自然现象影响的区域，并依据灾害强度（即实际遭遇的危险等级）对区域进行区分。 自然风险预防计划（PPRN）的灾害风险图通常涵盖三类灾害区域（即三级灾害等级）：强、中、弱灾害等级。根据所研究的灾害类型、受影响区域以及技术分析工具的不同，还可定义其他类型的灾害区域（例如洪水灾害中的残留灾害、森林火灾中的极强灾害）。针对沃克吕兹省的森林火灾风险预防计划（PPRif），其灾害等级仅分为极强、强、中三类。 不同自然现象的灾害强度评估标准并不统一，使用者需查阅对应自然风险预防计划（PPRN）的说明文档，以了解其所采用的灾害等级划分标准。 针对森林火灾风险预防计划（PPR Forest Incendies），灾害评估基于研究区域内任意点位的植被燃烧潜在强度进行估算，该强度可能会受火灾爆发实际情况的影响而调整。需注意的是，该省内有两份森林火灾风险预防计划（PPRifs）未提供本地化矢量格式的灾害数据。 需明确：与自然风险预防计划（PPRN）的法定区划不同，其灾害风险图并不会直接带来规划管控约束。但该风险图作为所研究自然风险的地理可视化成果，可作为向区域管理者与民众传递信息的载体，在必要时也可作为辅助知识，用于灾害应对准备以及事件发生时的正确处置参考。 可在Geo-IDE平台下载的森林火灾风险预防计划（PPR Incendies of Forests）相关数据，已按照COVADIS标准完成规范化处理。但需向数据使用者说明：规范化处理导致了与灾害区域类型对应的字段属性的数量与命名发生了变更。 为此，沃克吕兹省领土事务局（DDT）已在WRPP灾害区域数据中新增了“NIVALEA”字段，该字段可完整存储经审批的森林火灾风险预防计划（PPRFs）最终灾害风险图的相关全部信息。为避免对该PPR数据产生误读，强烈建议使用者查阅经审批的森林火灾风险预防计划（PPRFs）纸质档案中附带的灾害风险图——该纸质档案为官方参考依据，可在市政厅或省政府获取。