Runoff response to multiple land‐use changes and climate perturbations

作者：Mingjie Yang, Lianqing Xue, Yuanhong Liu, Wenzhuang Wang, Qiang Han, Saihua Liu, Ruizhe Fu · 发表于：Hydrological Processes · 年份：2024 · DOI：10.1002/hyp.15072 · 被引用次数：10 · 研究领域：Hydrology and Watershed Management Studies、Flood Risk Assessment and Management、Urban Stormwater Management Solutions

Abstract Runoff response to multiple land‐use changes and climate perturbations is distinct, and the main influencing factors vary significantly in different regions. However, few have simultaneously considered the effects of multiple land use changes (vegetation cover changes, terraces and check‐dams construction, and urban expansion) and climatic perturbations (precipitation, potential evapotranspiration, and temperature) on runoff and constructed separate expressions for distinct study areas. This article attempted to determine the main influencing factors of runoff according to the fitting function in the eight subregions of the middle Yellow River (MYR), construct the expressions between the controlling parameter in the Budyko framework and the main factors, and quantify the contribution of climate factors and land use changes to runoff by combining the elasticity coefficient in each subregion. The results indicated that climate factors and land use changes could significantly impact controlling parameters, and there were differences between regions. Climate change promoted an increase in runoff, while land use change promoted its reduction, and the reduction value outweighed its increase. In terms of land use changes, increasing vegetation coverage could suppress runoff reduction, while constructing terraces and check‐dams could promote its reduction. The urban expansion benefited runoff collection and, therefore, could suppress runoff reduction. Its absolute contributi...