Simple download service (Atom) of the dataset: Zone Vulnerable to Pollution by Nitrates of Agricultural Origin — 2012 — Aveyron

Surface objects of 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. These areas concern: — water affected by pollution: groundwater and surface fresh waters, in particular those used for the abstraction of water intended for human consumption, with nitrate content exceeding 50 milligrams per litre; estuary, coastal and marine waters, surface fresh waters which have undergone eutrophication which 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 a nitrate content of between 40 and 50 milligrams per litre and shows an upward trend; estuary, coastal and marine waters, surface fresh waters, the main characteristics of which show a tendency towards eutrophication that can be effectively combated by reducing nitrogen inputs. Areas vulnerable to nitrates arise from the application of the Nitrates Directive, which concerns the prevention and reduction of nitrates of agricultural origin. The 1991 Directive obliges each Member State to define ‘vulnerable areas’ where the waters are polluted or likely to be polluted by nitrates of agricultural origin. They are defined on the basis of the results of campaigns to monitor nitrate content in surface and groundwater fresh waters.本数据集收录被划定为受农业源硝酸盐面源污染（diffuse pollution）的脆弱区域的相关地表要素，重点纳入土地与水体特征参数，以及所有可获取的水体及其补给区的硝酸盐含量数据。 此类区域包含： — 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含量超过50毫克/升的水体；河口、近岸与海域水体，以及通过削减氮输入可有效防治富营养化（eutrophication）的地表淡水水体； — 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含量介于40至50毫克/升且呈上升趋势的水体；河口、近岸与海域水体，以及主要特征显示出存在可通过削减氮输入有效防治的富营养化倾向的地表淡水水体。 硝酸盐脆弱区域的划定源自《硝酸盐指令（Nitrates Directive）》的实施，该指令旨在防控与削减农业源硝酸盐污染。1991年出台的该指令要求各成员国划定“脆弱区域”，即水体已遭受或可能遭受农业源硝酸盐污染的区域，此类区域的划定以地表淡水与地下水的硝酸盐含量监测项目结果为依据。