地理国情普查数据在SWAT水文模拟中的适用性研究

针对以往SWAT水文模拟应用的精度较低的土地利用分类数据,论文研究了将高精度地理国情普查数据导入到SWAT模型土地利用分类系统的整合方法,以鹤壁汤河流域为研究区,构建了SWAT水文模型,以Landsat影像解译的土地利用/覆被数据作为参考,评价了地理国情普查数据在SWAT流域水文模型模拟中的适用性。模拟结果表明,地理国情数据模拟结果率定期和验证期相关系数(0.74、0.82)优于Landsat影像解译的土地利用/覆被数据模拟结果(0.71、0.80);基于地理国情数据构建SWAT模型模拟的月径流值与实测径流值吻合较好。

Applicability of Geographic Census Data in SWAT Hydrological Simulation

Aiming at the low precision land use classification data of SWAT hydrological simulation application,this paper studies the integration method of high precision geographical national census data into SWAT model land use classification system.Taking Hebi Tang River Basin as the research area,S WAT Based on Landsat image interpretation of land use/cover data,the hy drological model is used to evaluate the applicability of geographical census data in SWAT watershed hydrological model simulation.The simulation results show that the correlation coefficients(0.74,0.82)between the geographical period conditions and the valida tion period are better than the land use/cover data simulation results(0.71,0.80)of Landsat image interpretation,and the SWAT model is constructed based on the geographical situation data.The monthly runoff value is in good agreement with the measured run off value.