12/9/2022 0 Comments Hydrological processes![]() ![]() Previous studies have found various responses for regional water resources in the changes of climate and land use in different areas. Different integrated model applications have been designed and used to represent various possible climate changes and land-use conversions in the future and to estimate potential impacts from these individual and/or combined changes on watershed hydrological processes in quantity, stability, and uncertainty ( Lin et al. Scenario analysis is a valid approach to analyze possible responses of the watershed hydrological process to alternative possible regional conditions in the future ( Bellin et al. There is a great demand for quantitative descriptions of the hydrological process and its responses to both climate change and land-use conversion in an urbanizing watershed ( Chawla & Mujumdar 2015 Nadal-Romero et al. The increasing proportion of land-use areas with impermeable cover for new settlements will alter the original runoff and infiltration mechanisms that are critical for watershed hydrological processes. The influence on the underlying surface in an urbanizing watershed is acute. On the other hand, urbanization is an important man-made factor that may disturb the watershed water cycle ( Altdorff et al. Given the expected changes in the climate in the future, the estimation of its impact on watershed streamflow and water balance behavior is of great interest around the world ( Huyen et al. In addition, the air temperature determines the water state when it is transferred in the watershed. As the source and driving force of streamflow, precipitation is the key factor in hydrological processes. Regional climate change is one of the most significant natural influences on local hydrological properties ( Oki & Kanae 2006 Kristvik et al. The responses of watershed hydrological processes to the changing environment are of vital importance for regional security and sustainable development which are of great concern ( Tan & Gan 2015 Wada et al. Water is critical for human communities ( Milly et al. The proposed methodology of the combined multimodel approach may be applicable in other areas with similar conditions. These study results are helpful in supporting projects and/or decision-making processes for managers by providing more insights into the regional hydrological changes affected by climate change and urbanization. In addition, there would be different seasonal distributions of streamflow with a greater proportion of runoff. The results showed that both climate change and urbanization would lead to more watershed streamflow, and their combination would have synergistic effects on additional increases. The integrated impacts of climate change and urbanization in the future have been assessed in a watershed in Northwest China through a multimodel approach based on the combined application of Generalized Watershed Loading Functions, the Long Ashton Research Station Weather Generator, and the Land Change Modeler. The sensitivity of hydrological processes to the changed environment is of great concern. ![]()
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