摘要
借助遥感影像处理软件ERDAS IMAGINE 9.2和GIS技术对研究区QuickBird影像图进行下垫面类型分类和统计,在对降雨产流过程及地表径流污染特征研究的基础上,根据2008年的降雨总量,定量计算滇池流域全年城市降雨径流污染负荷。结果表明,流域内城镇区域屋顶、庭院、道路、绿地及其他类型面积比例分别为13.8%1、1.6%、5.2%、3.8%及65.6%。2008年滇池流域城市降雨径流污染负荷COD、TN、TP分别为2.95×104 t、1.24×103 t1、03 t。滇池北岸昆明主城区内的建成区全年城市降雨径流污染负荷COD、TN、TP的产生量分别为2.39×104 t、9.89×103 t、8.24×103 t,对滇池流域COD、TN、TP的贡献率总和分别为81.2%、79.5%8、0.3%。
By using remote sensing image processing software ERDAS IMAGINE 9.2 and GIS technology, the underlying surfaces of QuickBird image were classified to count annual pollution load from rainfall runoff in lake Dianchi Basin. Results of total rainfall in 2008 showed that the area ratios of roofs, courtyards, roads, green space and other types of cities and towns within Dianchi Basin were 13.8% , 11.6% , 5.2% , 3.8% and 65.6%. The COD, TN, TP pollution loads from urban rainfall runoff of the year 2008 in lake Dianchi Basin were 2.95 ×10^4 t, 1.24×10^3 t, 103 t respectively. Those pollution loads of northern shore of lake Dianchi in Kunming urban areas were 2.39 ×10^4 t, 9.89×10^3 t, 8.24 ×10^3 t, which contributes to 81.2% COD, 79.5% TN, 80.3% TP of lake Dianchi Basin.
出处
《环境监测管理与技术》
2011年第5期37-42,共6页
The Administration and Technique of Environmental Monitoring
基金
国家水体污染控制与治理科技重大专项--滇池流域水污染治理与富营养化综合控制技术及示范基金资助项目(2008ZX07102)
关键词
降雨径流
污染负荷
化学需氧量
总磷
总氮
滇池流域
Rainfall-runoff
Pollution load
COD
Total phosphorus
Total nitrogen
Lake Dianchi Basin
