Zones vulnerable to nitrate pollution (Quatrienium Report 2016-2019. Dir 91/676/EEC)

Areas vulnerable to pollution by nitrates from agricultural activity, in accordance with Directive 91/676/EEC concerning the protection of waters against pollution caused by nitrates from agricultural sources (the Nitrates Directive). They are controlled by underground and surface sampling stations, and the information is reported to the European Commission every four years. This version of vulnerable zones corresponds to that set out in the monitoring report on Directive 91/676/EEC for the four-year period 2016-2019.依据《关于保护水体免受农业源硝酸盐污染的第91/676/EEC号指令》（即《硝酸盐指令（Nitrates Directive）》）划定的农业活动硝酸盐污染脆弱区域。该类区域通过地下与地表采样站点开展监测，相关信息每四年向欧盟委员会报送一次。 本版脆弱区域数据集对应2016-2019年四年期《第91/676/EEC号指令》监测报告所划定的范围。