基于SWAT模型的潇河流域地表径流模拟研究  

Simulation of Surface Runoff in Xiao River Watershed Based on SWAT Model

作　　者：庞力驰 李洪建[1] 高宗强[2] 梁文彪[2] 

机构地区：[1]山西大学黄土高原研究所,太原030006 [2]山西省水文水资源勘测局,太原030001

出　　处：《山西大学学报（自然科学版）》2016年第1期158-164,共7页Journal of Shanxi University(Natural Science Edition)

基　　金：山西省软科学项目(20141016-1)

摘　　要：根据实测地表径流和降雨量数据,用SWAT(Soil and Water Assessment Tool)模型对汾河的二级支流-潇河流域的地表径流进行了模拟和验证,并分析了地表径流与降水量以及地表径流与土地利用之间的关系。结果表明:(1)SWAT模型可以较好地模拟潇河流域地表径流的年际和年内变化过程(率定期r=0.88;验证期r=0.78)。在降水量较多、产流较大的年份其模拟效率更高(r=0.98);(2)地表径流模拟值与降水量的变化呈显著正相关(r=0.865),且降水量的大小对地表径流的残差有影响;(3)在径流产流量贡献方面,林地最大(r=0.647),草地次之(r=0.581),耕地最弱(r=0.1),而在面积占比中草地(48.43%)却远大于林地(28.65%),可见一定程度上草地保持水土,涵养水源的能力要略好于林地。Based on the measured data of surface face runoff of Xiao River basin, the secondary runoff and precipitation, we simulated and verified the surtributary of Fen River in Shanxi,by using of SWAT （Soil and Water Assessment Tool） model, we also analyzed the relationships of surface runoff with precipitation and land use types separately. The results of this study are as follows. （1） The SWAT model could be well used to simulate changing process of surface runoff of Xiao River basin both interannually and seasonally （Calibration period r=0.88 ;Validation period r= 0.78）, and the model showed very well especially for the years with high precipitation and surface runoff（r=0.98）. （2） The surface runoff is significantly positively related to precipitation （r=0. 865）. Also the surface runoff residual is affected by the amount of rainfall. （3） Among all the use types, the forest land made the biggest contribution to the surface runoff （r= 0. 647）, and the next one was grass land （r=0. 581）, followed by farmland （r=0. 1）. However the area of the grass land （48. 43%） is much bigger than the forest land （28. 65%）. It suggested that the ability of water conservation is slightly better in the grass land to a certain extent.

关 键 词：SWAT模型 地表径流模拟 水文参数 潇河流域 

分 类 号：Q178[生物学—水生生物学] P343[生物学—普通生物学]