Natural landslide risk prevention plan — Commune de Moissac — Perimeter — Department of Tarn-et-Garonne

This dataset contains the boundaries at the different stages of the development of the PPRN. The characteristic of these perimeters is to be the consequence of an official act and to produce their effects from a specified date. This is the following:
— prescribed scope contained in the prescription order of a PPR (natural or technological);
— scope of risk exposure that corresponds to the scope regulated by the approved RPP. This approved perimeter is a utility easement (PM1 for PPRNs and PM3 for PPRTs);
— scope of study which corresponds to the envelope in which the hazards were studied.

本数据集收录了PPRN（PPRN）不同发展阶段的边界信息。此类边界的特征为：由官方行为确立，并自指定生效日期起产生法律效力。具体如下：
——自然或技术类PPR（PPR）处方指令中载明的法定范围；
——与经批准的RPP（RPP）所规制范围相对应的风险暴露范围。该经批准的边界为公用役地，其中PPRN对应PM1（PM1），PPRT（PPRT）对应PM3（PM3）；
——研究范围，即开展危险评估所覆盖的范围。