WFD Cycle 2 River Ammonia Classification

This dataset is a subset of the "WFD Classification Status Cycle 2" product. It contains summary data for the element ammonia for river water bodies, as used in the classification for Ecological status for the water framework directive (WFD). The ammonia classification dataset is an element of the physico-chemical group or element set and is used to consider particular phyisco-chemical conditions. Ammonia is hazardous due to its toxic and sub-lethal impacts on fish and macro-invertebrates. It is a decay product of nitrogenous organic wastes and of the breakdown of animal and vegetable wastes. Classifications are derived from spot sampling monitoring data, the results of which are calculated into percentiles and assessed against two different environmental quality standards (EQS), which are derived from site typology. Site classifications for ammonia use categories of High, Good, Moderate, Poor, and Bad. Attribution statement: © Environment Agency copyright and/or database right 2016. All rights reserved.

本数据集为“WFD分类状态周期2”产品的子集。其中包含河流水体中氨元素的汇总数据，该数据用于水框架指令（WFD）生态状况分类。氨分类数据集是物理化学组或元素集的一部分，用于考虑特定的物理化学条件。氨由于其有毒和亚致死性对鱼类和大型无脊椎动物的影响而具有危害性。它是含氮有机废物分解和动植物废物分解的产物。分类结果基于现场采样监测数据得出，并计算成百分位数，与两个不同的环境质量标准（EQS）进行评估，这些标准源于场地类型。氨的场地分类使用高、良好、中等、较差和差等类别。