AEAG — SDAGE 2022-2027 — Underground Waters — Nitratal Issues and Trends

SDAGE 2022-2027 — Chapter 5.4 Identification of trends in Nitrates concentrations in groundwater. The reversal of any significant and sustainable upward trend in the concentration of any pollutant in groundwater resulting from the impact of human activity is one of the environmental objectives of the Water Framework Directive (...). One of the maps presents the trends calculated for nitrates to the water body, with information on the mean nitrate content of MESO in 5 classes. The average used was obtained by the average of the averages for each MESO point. The other map presents the 22 bodies of water at stake for the Adour Garonne basin: bodies of water for which an overall trend of the water body is increasing or stable and at least one monitoring point with an extrapolated nitrate concentration at maturity 2027 exceeding 40 mg/l.SDAGE 2022-2027 — 第5.4章 地下水中硝酸盐浓度趋势识别。 因人类活动影响导致地下水中任意污染物浓度出现显著且持续的上升趋势，其逆转是《水框架指令（Water Framework Directive）》的环境目标之一（……）。 其中一幅地图展示了针对水体中硝酸盐计算得到的浓度变化趋势，附带按5个等级划分的MESO硝酸盐平均含量信息。本次计算采用的平均值，由各MESO监测点的平均值取平均得到。 另一幅地图展示了阿杜尔-加龙河流域（Adour Garonne basin）内的22个受关注水体：这些水体的整体浓度趋势呈上升或稳定状态，且至少存在一个监测点，其2027年成熟阶段外推的硝酸盐浓度超过40毫克/升。