Analysis of the Applicability of SWAT+Model in Qijiang River Basin
In order to evaluate the applicability of SWAT+model in the basin of Sichuan Province,SWAT and SWAT+models were constructed to explore the applicability of SWAT+model in non-point source simulation of runoff and total phosphorus in Qijiang River Basin.The results show that the two models show good runoff simulation effect,which the R2 and Ens are both above 0.6,and SWAT+model shows better applicability.The total phosphorus simula-tion effects of the two models are qualified.The R2 and Ens of the SWAT+model are both slightly higher than these of the SWAT model.The total phosphorus monthly average pollution load in 2015 of Qijiang river basin is about 0.93-1.58 kg/(ha·month),which shows the pollution load is generally higher in the downstream than in the upstream.The SWAT+model has a great improvement in watershed configuration,input file format,land use and management.In ad-dition,the SWAT+model can describe planar drainage system,which enables more accurate modeling in the research area with reservoirs,ponds and gate dam.However,SWAT+model has a low efficiency of river channel generation process.In general,SWAT+model shows good applicability in Qijiang river basin.It is expected to replace SWAT model with its high-quality user experience and good simulation effect.
SWAT+modelSWAT modelQijiang River basinrunoff simulationnon-point source pollution
万方数据
维普
