WFD Cycle 1 2015 Improvements (England)

This dataset contains Cycle 1 Water Framework Directive (WFD) class improvements at water body level, for England only, for the year 2015, for quality elements. This dataset also contains the statistical confidence and derived certainty that a real improvement in class has occurred. Improvements are assessed by detecting upgrades in class status in 2015 against the baseline status of 2009, and estimating the confidence that a real improvement in class has occurred. Attribution statement: Environment Agency copyright and/or database right 2016. All rights reserved.本数据集仅覆盖英格兰地区，涵盖2015年水体尺度下第一周期《水框架指令》（Water Framework Directive, WFD）的等级提升情况，涉及水质要素。本数据集同时包含统计置信度与经推导确认的水体等级真实提升确定性。等级提升的评估方法为：以2009年的基准状态为参照，识别2015年的等级状态升级情况，并估算等级确已发生真实提升的置信度。版权归属声明：英格兰环境署（Environment Agency）2016年享有本数据集的版权及/或数据库权利，保留所有权利。