摘要
以渭河华县断面以上流域为研究区,应用SWAT模型对该区域的径流、泥沙及氮污染负荷的产生与输出过程进行模拟计算。利用华县站1987-1988年的实测月径流、泥沙和污染物数据进行模型的调参计算,用1989-1990年的实测月径流、泥沙和污染物数据对模型进行验证,验证结果表明模型基本合理可行,可用于渭河流域非点源污染的模拟计算。利用率定好的模型对不同典型年进行了模拟计算,根据模拟结果对该区域的径流、泥沙和氮污染负荷的时空产生与输出特点进行了分析,为流域非点源污染防治规划提供科学依据。
Weihe river watershed above Hua-xian section is selected as the study area. SWAT model is applied to the simulation computation of the producing and transporting process of flow, sediment and nitrogen non-point source pollution. Monthly flow, sediment and nitrogen pollutant data series of 1987 1988 are used to calibrate the correlative parameters of flow, sediment and nitrogen pollutant. The data series of 1989 - 1990 are used to validate model. The results of calibration and validation show that the model is rational and available. The calibrated model is used to calculate the loadings of nitrogen nonpoint source pollutants of different typical years. Based on the simulated results, the temporal and spatial distribution of flow, sediment and non-point source pollution is analyzed , whereby providing the scientific basic for the controlling planning of non-point pollution in the watershed.
出处
《西安理工大学学报》
CAS
2008年第3期278-285,共8页
Journal of Xi'an University of Technology
基金
国家自然科学基金资助项目(90610030)
陕西省教育厅科学研究计划资助项目(06JK222)
关键词
非点源污染
氮
SWAT模型
渭河流域
参数率定
模型验证
non-point source pollution
nitrogen
SWAT model
weihe river watershed
parameter calibration
model validation
