【摘要】 调查了秦岭北麓西自宝鸡东至潼关的10县区的28条河流,利用单污染指数法和综合污染指数法进行了评价。研究结果表明:有56.10%的河段受到不同程度的污染,其中水质严重污染的河段占7.32%;中度污染的河段占14.63%;轻污染的河段占34.15%。共有43.90%的河段水质较好,其中水质尚清洁的河段占34.15%;水质清洁的河段占9.76%。不同区县的污染特点不同。宝鸡市陈仓区和渭滨区的河段水体较清洁;西安市所辖户县、周至县、长安区主要以有机污染为主;渭南市所辖潼关、华阴和华县的有机污染和金属污染及氟污染都很严重。更多还原

【Abstract】 28 rivers of ten counties from west to east in the north piedmont of Qinling Mountain were investigated and assessed by using single-factor polluted index and synthesis polluted index.The results demonstrated that: 56.10% of the rivers were contaminated to different degrees,among which heavily polluted rivers covered 7.32%;moderatly polluted rivers covered 14.63%;lightly polluted rivers cover 34.15%.43.90% of the rivers had good-quality fresh water,among them relatively clear rivers covered 34.15% and clear rivers covered 9.76%.The characteristics of water pollution differed among different counties: In Chencang Section and Weibin Section of Baoji City,the water was relatively clear;in Hu County,Zhouzhi County and Chang’an County administered by Xi’an City,there were mainly organic pollution;in Tongguan County,Huayin County and Hua County administered by Weinan City,there were serious heavy metal pollution and florin pollution as well as organic pollution.更多还原