N_PERIMETRE_PPRN_20140244_S_032

Perimeter of the Natural Risk Prevention Plan Withdrawal of the Argiles of the municipality of Lasséran in the department of Gers. This dataset contains the boundaries at the different stages of the development of the RPP. 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:- prescribed perimeter set out in a PPR’s prescription order;- risk exposure perimeter that corresponds to the perimeter regulated by the approved RPP, this approved perimeter is a utility easement;- study scope that corresponds to the envelope in which the hazards were studied.热尔省（Gers）拉瑟朗（Lasséran）市镇黏土区域自然风险防治计划（Natural Risk Prevention Plan）废止范围数据集。 本数据集收录了该自然风险防治计划（Natural Risk Prevention Plan，下文简称RPP）全生命周期不同阶段的边界范围。 此类边界的共性特征为：均以官方正式文书为设立依据，并自指定生效日期起产生法律效力。 具体涵盖以下三类范围： - 法定划定边界：由自然风险防治计划（PPR，Natural Risk Prevention Plan）划定令所明确的合规范围； - 风险暴露边界：对应经核准的RPP所规制的范围，该核准范围属于公共地役权（utility easement）范畴； - 研究覆盖范围：即开展灾害风险研究时所划定的研究包络边界。