密云水库水源保护区不同特征植被对产流水质影响

Effect of Vegetation with Different Characteristics on Water Quality of Rainfall-Runoff in Water Conservation Area of Miyun Reservoir

主要通过研究密云水库水源保护区上游和消落区的不同特征植被在降雨产流后对产流水质进行化验分析,比较不同特征植被产流水质的优劣。结果表明:森林植被覆盖率高,人为活动干扰少的水质优良,反之水质就较差;消落区种草区产流水质优良,农业种植区水质最差,各项指标都超出饮用水标准。由此得出不同特征植被的产流水质与森林覆盖率有一定的正相关性,人为活动也对水质有较大影响。同时对如何更好地保持密云水库水质提出了合理化建议。

Water quality was affected by vegetation with different characteristics after rainfall runoff in upstream riparian zone water conservation area of Miyun reservoir.The pros and cons of water quality of vegetation with different characteristics were analyzed compared.Result shows that： forest vegetation coverage is high;water quality is fine with little human disturbance,whereas the water quality is poor;the water quality of runoff in riparian grass area is excellent;the water quality in agriculture planting area is poor;all indexes have exceeded drinking water standards.Result shows that water quality of runoff of vegetation with different characteristics forest cover have a certain positive correlation;human activities have significant impact on water quality.Rationalization proposals were put forward on how to keep the water clean in Miyun reservoir at the same time.