水资源保护2024，Vol.40Issue(3)：28-34,51,8.DOI:10.3880/j.issn.1004-6933.2024.03.004
考虑植被根系深度动态变化的VIC径流模拟模型
VIC model for runoff simulation considering dynamic changes of vegetation root depth
摘要
Abstract
In order to improve the simulation accuracy of the hydrological model under the influence of vegetation change in arid and semi-arid areas,combing with the vertical distribution of plant roots and climate and soil conditions,a method for estimating average root depth in a basin based on underlying surface characteristics such as basin meteorology and soil properties was proposed.With the Wuding River Basin in Loess Plateau region used as an example,a variable infiltration capacity(VIC)model for runoff simulation,considering dynamic changes of vegetation root depth,named VIC-DR model,was constructed.The runoff simulation results of the VIC-DR model were compared with those of the original VIC model with the confluence checking computation,named VIC-R model.The results show that,compared with the VIC-R model,the simulation accuracy of the VIC-DR model was significantly improved.The Nash-sutcliffe efficiency coefficient of the monthly and daily runoff simulation results of the VIC-DR model increased by 10.6％and 8.7％,respectively,the relative error decreased by 15.4％and 5.1％,respectively,and the correlation coefficients between the simulated runoff and measured runoff at monthly scale and daily scale were greater than 0.6.The simulation results of the VIC-DR model accord with the actual situation of the basin,and the model has high applicability.关键词
VIC模型/动态植被根系参数/径流模拟/无定河流域Key words
VIC model/dynamic vegetation root parameters/runoff simulation/Wuding River Basin分类
天文与地球科学引用本文复制引用
张珂,戴钰,刘林鑫,牛杰帆,毕可心,李志琳..考虑植被根系深度动态变化的VIC径流模拟模型[J].水资源保护,2024,40(3):28-34,51,8.基金项目
国家重点研发计划项目(2023YFC30065005) （2023YFC30065005）
中央高校基本科研业务费专项资金资助项目(B240203007) （B240203007）
