城市地表水环境质量排名方法研究

Method Study on Sequence of City Surface Water Environmental Quality

基于现行的国家水环境质量评价标准和方法,研究建立了综合反映城市地表水环境质量的城市水质指数CWQI。方法具有普适性、可操作性和可比性,可用于城市地表水环境质量排名。应用于长三角经济圈、珠三角经济圈和京津冀经济圈的相关城市进行排名测算,3个经济圈的城市水质指数呈现不同的分布规律,总体来说长三角经济圈的城市地表水环境质量优于珠三角经济圈和京津冀经济圈。

Based on national assessment standard and method of surface water environmental quality, City Water Quality Index is built to reflect the condition of the whole city surface water environment. The method is universal, operable and comparable. It can be used to sequence surface water environmental quality in different cities. City water quality indexes of every city in Yangtze River Delta, Pearl River Delta and Beijing-Tianjin-Heibei Region are calculated. Results show different distribution patterns in different regions. On the whole, the surface water environmental quality of the Yangtze River Delta city group is better than those of the other two.