Method for establishing model of response of flood characteristics of medium and small river basins to changing environment

Abstract

The invention discloses a method for establishing a model of a response of flood characteristics of medium and small river basins to the changing environment. According to the method, Meihua-River upstream basins of typhoon-rainstorm prone areas of south China serve as research areas, basin flood characteristics under conditions of climatic changes and land use and land cover changes and the response of the basin flood characteristics to the changing environment are analyzed; a physical geography data set of the research areas is established, then a field observation test is carried out in cooperation with historical screening flood data, the relationships between key runoff-generation-and-confluence parameters and environment factors are determined in cooperation with historical observation data, and the rainstorm-flood runoff generation mechanism in the changing environment of the relationships is discussed; the influence of the climatic changes and the land use and land cover changes on the flood characteristics of the typhoon-rainstorm areas is analyzed; a scientific basis and an infrastructural support are provided for prevention and management of flood damage of the medium and small river basins in typhoon rainstorm areas of south China and a land utilization optimization scheme in the future period.

Description

Technical field [0001] The present invention relates to the technical field of geological disaster research, in particular to a method for constructing a response model of flood characteristics of small and medium-sized river basins to changing environments. Background technique [0002] The hydrological effects of global environmental changes have become an international hotspot. In recent years, the situation of mountain flood disasters in small and medium watersheds caused by the increase in the intensity and frequency of typhoons has been severe. [0003] 1. International frontier issues. The hydrological effects of changing environment have received widespread international attention. Global change includes both climate change and environmental changes caused by human activities. Among them, the hydrological effects of changes in precipitation caused by climate change and changes in land use caused by human activities have become a hot issue worldwide. The World Meteorologic...

AI Technical Summary

Problems solved by technology

[0005] 3. Typical research area: the upper reaches of Meihua River, where human activities are intense, and typhoon storms cause frequent flood disasters, causing serious social and economic losses

However, no relevant research has been published on the analysis of the characteristics of storm floods in the upper reaches of the Meihua River and the impact of changing environments on them.

Images