基于SWAT模型的荆州市不同土地利用类型对雨水入渗量和径流系数的影响  

Effects of Different Land Use Types on Rainwater Infiltration and Runoff Coefficient in Jingzhou City Based on SWAT Model

作　　者：鲁睿哲 韦鸿[1] LU Rui-zhe;WEI Hong(School of Economics and Management,Yangtze University,Jingzhou,Hubei 434023)

机构地区：[1]长江大学经济与管理学院,湖北荆州434023

出　　处：《安徽农业科学》2024年第15期91-96,共6页Journal of Anhui Agricultural Sciences

摘　　要：以荆州市为研究对象,结合试验观测、模型模拟与理论分析,研究不同尺度、区域和降雨条件下土地利用变化对雨水入渗量和径流系数的影响。结果表明,2010—2022年荆州市土地利用类型经历了明显转变,耕地面积缩减,建设用地扩张,林地与草地面积稳定,水域略增,其他用地略减,这些变化导致雨水入渗量呈上升趋势,而径流系数呈下降趋势。不同土地利用类型对雨水入渗量和径流系数的影响各异,林地和建设用地对雨水入渗量产生正面影响,对径流系数则是负面;耕地对雨水入渗量有负面影响,对径流系数则正面;草地、水域及其他用地的影响较为有限。土地利用变化对雨水入渗量和径流系数的影响随尺度、区域和降雨条件的不同表现出差异性和复杂性。Taking Jingzhou City as the research object,combined with experimental observation,model simulation and theoretical analysis,the effect of land use change on rainwater infiltration and runoff coefficient under different scales,regions and rainfall conditions were studied.The results showed that the land use types in Jingzhou City had undergone significant changes from^(2)010 to 2022,the cultivated land area had decreased,construction land had expanded,forest and grassland had stabilized,waters had slightly increased,and other land use had slightly decreased.These changes led to an upward trend in precipitation infiltration,while the average runoff coefficient showed a downward trend.The effect of different land use types on rainfall infiltration and runoff coefficient varied.Forest land and construction land had a positive impact on infiltration,while they had a negative impact on runoff coefficient;farmland had a negative impact on infiltration and a positive impact on runoff coefficient;the effect of grasslands,waters and other land uses was relatively limited.The effect of land use change on infiltration and runoff coefficients varied and was complex with different scales,regions and rainfall conditions.

关 键 词：土地利用类型 雨水入渗量 径流系数 SWAT模型 荆州市 

分 类 号：P333[天文地球—水文科学]