Simple download service (Atom) of the dataset: Areas vulnerable to nitrates of agricultural origin in Languedoc-Roussillon (2015)

The delimitation of areas vulnerable to pollution by nitrates of agricultural origin was made in the context of Decree No 93-1038 of 27 August 1993, which transposes Directive 91/676/EEC into French law. This delimitation, prepared in each department and in each region by working groups, involving various departments and bodies concerned as well as representatives of the agricultural profession, is based on the knowledge acquired of nitrate levels in the aquifers and rivers and on the levels observed during various monitoring campaigns on a monitoring network set up for that purpose. The area vulnerable to pollution of nitrates of agricultural origin, was updated in 2015 for Languedoc-Roussillon with the signing by the Prefects of the Rhône Méditerranée Corse and Adour Garonne basins of the delimitation orders. ‘Areas designated as vulnerable’ to diffuse pollution by nitrates of agricultural origin, taking into account in particular land and water characteristics and all available data on nitrate content in waters and their feeding zone, concern: — water affected by pollution: groundwater and surface fresh water, in particular those used for the abstraction of water intended for human consumption, with a nitrate content exceeding 50 milligrams per litre; estuary, coastal and marine waters and surface fresh waters that have undergone eutrophication that can be effectively combated by reducing nitrogen inputs. — waters threatened by pollution: groundwater and surface fresh water, in particular those used for the abstraction of water intended for human consumption, with nitrate content of between 40 and 50 milligrams per litre and showing an upward trend; estuary, coastal, marine and surface fresh waters, the main characteristics of which show a tendency towards eutrophication that can be effectively combated by reducing nitrogen inputs.本农业源硝酸盐污染脆弱区的划定工作，依据1993年8月27日第93-1038号法令开展，该法令将欧盟指令91/676/EEC（Directive 91/676/EEC）转化为法国国内法律。 各省及各地区均由工作组负责推进本次划定工作，参与主体涵盖相关职能部门、机构及农业行业代表；划定工作以含水层与河流中的硝酸盐浓度监测数据，以及为该目的搭建的专项监测网络开展多轮监测行动所得的浓度观测结果为主要依据。 2015年，罗讷-地中海-科西嘉流域与阿杜尔-加龙河流域的省长签署划定令，对朗格多克-鲁西永地区的农业源硝酸盐污染脆弱区进行了更新。 “农业源硝酸盐面源污染脆弱划定区”系综合考量土地与水体特性、水体及其补给区的全部可用硝酸盐浓度数据后划定的区域，涵盖以下两类： — 已受污染水体：地下水与地表淡水，尤其是用于提取生活饮用水且硝酸盐浓度超过50毫克/升的水体；河口、近岸海域、海洋水体以及已发生富营养化且可通过削减氮输入有效治理的地表淡水。 — 受污染威胁水体：地下水与地表淡水，尤其是用于提取生活饮用水且硝酸盐浓度处于40至50毫克/升区间且呈上升趋势的水体；河口、近岸海域、海洋水体以及整体特征显示出富营养化趋势且可通过削减氮输入有效治理的地表淡水。