山区丘陵地区农业非点源污染负荷估算方法比较研究  

Comparative Study on Estimation Methods of Agricultural Non-point Source Pollution Load in Mountainous and Hilly Areas

作　　者：李俊玲 何璟嫕 苏保林[1,2] 廖雅 郑子璇 LI Jun-ling;HE Jing-yi;SU Bao-lin;LIAO Ya;ZHENG Zi-xuan(Collegeof WaterSciences,BeijingNormal University,Beijing100875,China;Beijing Key Laboratory of Urban Hydrological Cycle and Sponge City Technology,Beijing 100875,China)

机构地区：[1]北京师范大学水科学研究院,北京100875 [2]城市水循环与海绵城市技术北京市重点实验室,北京100875

出　　处：《水电能源科学》2022年第11期45-49,共5页Water Resources and Power

基　　金：国家水体污染控制与治理科技重大专项(2017ZX07301003)。

摘　　要：为比较农业非点源污染负荷估算方法在山区丘陵地区的适用性和精度等,对比分析了机理模型SWAT模型法和经验模型流失系数法分别估算典型山区丘陵地区铁岭市的农业非点源污染负荷的差异。结果表明,SWAT模型法计算出的铁岭市农田地表径流总氮负荷量为850.2 t,总磷负荷量为70.5 t;流失系数法计算出的铁岭市农田地表径流总氮负荷量为937.0 t,总磷负荷量为71.4 t。流失系数法相对于SWAT模型法的计算结果,氮、磷负荷量相对误差分别为10.2%、1.3%。研究表明,SWAT模型法在山区丘陵地区的适用性较好,计算结果精度较高;流失系数法操作简便,但由于田间试验的尺度效应及未考虑入河过程,其计算结果精度较低,结果一般偏大。In order to compare the applicability and accuracy of agricultural non-point source pollution load estimation methods in mountainous and hilly areas, the SWAT model method of mechanism model and loss coefficient method of empirical model were used to estimate the agricultural non-point source pollution load of Tieling City which is the typical mountainous and hilly areas. The results show that the total nitrogen load and total phosphorus load of farmland surface runoff in Tieling City calculated by SWAT model method are 850.2 t and 70.5 t. The total nitrogen load and total phosphorus load of farmland surface runoff in Tieling City calculated by loss coefficient method are 937.0 t and 71.4 t. Compared with the calculation results of SWAT model method, the relative errors of nitrogen and phosphorus load of loss coefficient method are 10.2% and 1.3% respectively. The research shows that the SWAT model method has good applicability and high accuracy in mountainous and hilly areas. The loss coefficient method is easy to operate, but the accuracy of its calculation results is low and the results are generally too large due to the scale effect of field experiment and the process of inflow into river is not considered.

关 键 词：山区丘陵地区 非点源污染 SWAT模型法 流失系数法 比较研究 

分 类 号：TV11[水利工程—水文学及水资源] X52[环境科学与工程—环境工程]