密云水库入库支流潮河省界断面水质特性及其影响因素分析

依据水质自动监测系统数据,对密云水库重要入库支流一潮河古北口省界断面水质变化趋势、水质特性等进行了详细讨论与分析.结果表明,2002-2006年古北口水质不满足Ⅱ类标准的周数占全年百分比在15.4%～50.O%之间.水质变化一般规律为:水质超标时段主要集中在7-9月,水质类别为Ⅲ～V类;其他时段水质类别基本保持在Ⅱ类.水质污染的主要原因是:潮河上游地区水土流失造成的非点源污染较严重,入境水量逐年较少,上游矿山开采存在一定污染隐患.建议尽快研究与建立流域上下游生态补偿机制,加大对潮河流域上游的治理力度,促进上下游地区经济与环境的可持续发展.

An analysis of the water characters and its influenced effects at Provincial Section of Miyun Reservoir's Chaohe tributary

The data of auto-monitoring system was used.The changing trend on water quality of Chaohe Gubeikou provincial section,which is an important Miyun Reservoir's tributary,was discussed and analyzed.The weeks of water quality worse than II grade of Gubeikou,was 15.4%~50.0% from 2002 to 2006.The water quality was worse in Jul.-Sept.,which was III~V grade.The main reason of water population was: no-point pollution was serious caused by soil and water loss in upper reaches of Chaohe river;the amount of entering wa...