Dataset Direct Download Service (WFS): List of PPRs Mouvement de Terrain in Héault

The Risk Prevention Plans (PPR) were established by the Act of 2 February 1995 on strengthening the protection of the environment. They are the key instrument of the State in the field of risk prevention. Their objective is to monitor development in areas exposed to a major risk.The PPRs are approved by the prefects and generally carried out by the departmental directorates of the territories (DDT). These plans regulate land use or land use through construction prohibitions or requirements on existing or future buildings (constructive provisions, vulnerability reduction work, restrictions on use or agricultural practices, etc.).These plans may be under development (prescribed), implemented in advance or approved.The PPR file contains a presentation note, a regulatory zoning plan and a regulation. Other graphic documents that are useful for understanding the approach (e.g. hazards, issues, etc.) can be attached. Each PPR is identified by a polygon that corresponds to the set of affected municipalities within the scope of the prescription when it is in the prescribed state; and the envelope of restricted areas when it is in the approved state. This geographical table allows mapping existing PPRNs on the department. Each PPRN document existing in the N_DOCUMENT_PPRN geographical table is linked with its GASPAR code in the format “ddd[PREF|DDT|DDTM|DREAL]aaaannnn” (AAAA and NNNN correspond to the reference year and order number of the associated PPR procedure in GASPAR): 1. its administrative procedure for the preparation (or revision) managed in the GASPAR application, on the one hand, 2. its set of numerical spatial constituent data described by the metadata sheet N_PPRN_AAAANNNN (#0001495) on the other hand.风险预防计划（Risk Prevention Plans，PPR）由1995年2月2日颁布的《加强环境保护法案》设立，是国家风险预防领域的核心管控工具。其核心目标为对重大风险暴露区域的开发活动实施动态监测。PPR由省长审批，通常由各省领土事务总局（departmental directorates of the territories，DDT）牵头落实。此类计划通过对既有或拟建建筑设定施工禁令、合规要求（含施工规范、风险脆弱性降低工程、使用限制或农业生产规范等），对土地利用行为进行管控。此类计划可处于法定编制、预实施或已获批三种状态。PPR档案包含说明文档、管制区划图与管控规程，同时可附加有助于理解该计划的其他图文资料（如风险点位、相关议题等）。每份PPR以多边形矢量边界进行标识：处于法定编制状态时，该边界对应管控范围内受影响的全部市镇范围；处于已获批状态时，则对应受限区域的整体覆盖范围。该地理数据表可实现省内已生效PPRN的空间制图。存于N_DOCUMENT_PPRN地理数据表中的每份PPRN文档，均与其格式为"ddd[PREF|DDT|DDTM|DREAL]aaaannnn"的GASPAR编码相关联，其中AAAA与NNNN分别对应GASPAR系统中关联PPR流程的参考年份与序号：一方面为其在GASPAR系统中管理的编制（或修订）行政流程，另一方面为元数据表N_PPRN_AAAANNNN（编号#0001495）所描述的数值空间组成数据集。