西安市非点源污染负荷估算  

Estimation of Xi'an urban non-point source pollution load

作　　者：齐苑儒[1,2] 李怀恩[1] 李家科[1] 秦耀民[1] 

机构地区：[1]西安理工大学西北水资源与环境生态教育部重点实验室,陕西西安710048 [2]陕西省水利电力勘测设计研究院,陕西西安710001

出　　处：《水资源保护》2010年第1期9-12,74,共5页Water Resources Protection

基　　金：国家水体污染控制与治理科技重大专项(2008ZX07317-004-001);陕西省教育厅科学研究计划项目(06JK222)

摘　　要：在有限资料条件下,首先通过Erdas软件生成研究区域的土地利用图,在Arcgis支持下统计不同土地利用类型的面积,其次选取西安市周边4个雨量站的降雨量数据的平均值作为2005年的降雨量,采用SCS径流曲线模型计算2005年的年净雨量,然后求出2005年西安市的年径流量,最后根据研究区域内COD、TN、SS以及TP等污染物的平均浓度,估算出它们的负荷量。结果表明:西安市2005年污染物负荷量分别为COD14 794.7 tT、N1 233.0 tS、S52 426.3 t、TP61.7 t。Under a condition of having limited data, land use graphs of a study region were generated with the software Erdas,. with the support of ArcGIS, and statistics of the different land use of areas were calculated. Then, average values of the data from four rainfall stations around Xi＇an were selected and taken as rainfall data for 2005. The SCS runoff curve model was used to calculate the total net precipitation for 2005, and the annual runoff volume of Xi＇ an was also calculated. Finally, according to the mean concentrations of the COD, TN, SS, and TP, the pollution load was estimated in the study region in Xi＇ an. The estimated results showed that there were 14794.7 tons of COD, 1233.0 tons of TN, 52426.3 tons of SS, and 61.7 tons of TP, respectively, in 2005.

关 键 词：城市非点源 降雨径流 SCS模型 污染负荷 西安市 

分 类 号：X703[环境科学与工程—环境工程]