基于SWAT模型的伊通河流域农业非点源污染损失估算

发布时间：2018-06-13 06:29

本文选题：农业非点源污染 + 污染损失　；参考：《节水灌溉》2017年03期

【摘要】：选取伊通河流域为研究区,在构建伊通河流域数字化平台的基础上,将SWAT模型与环境经济学方法相结合定量估算了研究区的农业非点源污染损失,为伊通河流域农业非点源污染的防治与管理提供科学依据与决策支持。研究结果表明:构建的伊通河流域农业非点源污染模型达到了精度要求。研究区2010年农业非点源泥沙负荷、总氮负荷以及总磷负荷均为最高,2011年均为最低;研究区的土壤侵蚀主要是由耕地引起的,占总量的96%以上。研究区农业非点源污染损失折算成人民币约为52 845.42万元/a,年降雨量越大的年份损失越严重;总体上,伊通河流域内农业非点源污染价值损失的大小顺序为:总氮污染价值损失泥沙淤积价值损失总磷污染价值损失土地废弃价值损失。
[Abstract]:On the basis of constructing the digital platform of Yitong River Basin, the SWAT model and the environmental economics method were used to quantitatively estimate the agricultural non-point source pollution loss in the study area. It provides scientific basis and decision support for the prevention and management of agricultural non-point source pollution in Yitong River Basin. The results show that the model of agricultural non-point source pollution in Yitong River reaches the precision requirement. In 2010, the agricultural non-point source sediment load, total nitrogen load and total phosphorus load were the highest and the lowest in 2011. Soil erosion in the study area was mainly caused by cultivated land, accounting for more than 96% of the total. The agricultural non-point source pollution losses in the study area were converted into RMB 528.4542 million yuan / a, and the more rainfall the year, the more serious the loss; in general, The order of value loss of agricultural non-point source pollution in Yitong River Basin is: total nitrogen pollution value loss sediment deposition value loss total phosphorus pollution value loss land abandonment value loss.
【作者单位】：吉林大学地下水资源与环境教育部重点实验室;吉林大学环境与资源学院;
【基金】：国家水体污染控制与治理科技重大专项(2012ZX07201-001)
【分类号】：X71;X52

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