流域降雨量和土壤氮含量对流域出口氮污染负荷的影响  

Impact of N Pollutant Load at the Exit of Watershed by the Rainfall and the Soil N Content in Watershed

作　　者：王春光[1] 叶水根[1] 

机构地区：[1]中国农业大学水利与土木工程学院,北京100083

出　　处：《灌溉排水学报》2005年第6期15-18,共4页Journal of Irrigation and Drainage

摘　　要：根据氮在土壤中的运移规律,运用建立的数学模型分析流域降雨量和土壤氮含量与流域出口氮污染负荷之间的关系,揭示了氮污染的形成机理。然后以管河流域为例,分析得出以下2条规律:在汛期随着流域土壤含氮量的增加,流域出口氮污染负荷增加;随着降雨量增加,流域出口氮污染负荷也增加。The relationship among rainfall, the soil N content in the watershed and N pollutant load at the exit of the watershed was analyzed by mathematic model in the paper, using the soil N moving law in order to reveal the mechanism how N pollution works. Then, the regulation, N pollutant load will be increased with the enhancing of the rainfall and the soil N content in water shed, can be educed basing on the study of Guan River watershed.

关 键 词：面源污染 污染负荷 土壤含氮量 降雨量 

分 类 号：X52[环境科学与工程—环境工程] S273[农业科学—农业水土工程]