Analysis of Impacting Factors on Runoff and Sediment Transport of Flood Event in Gushanchuan Watershed

摘要

The turning point of water and sand of natural period and human activity impacting period in Gushanchuan basin is the year 1979, which analyzed by method of orderly clustering and MWP test. The model is established using the data before 1979, and the impacting factors on runoff and sediment transport of flood event after 1979 are analyzed. The hydrology model in the basin is the major approach for analyzing the changes of water and sand, and assessing the benefits of water-soil conservation. Over the years, domestic and foreign research institutions and scholars established runoff and sediment yielding models based on the period of day. In this paper, the model of rainfall-runoff and rainfall-sediment of flood event in Gushanchuan watershed is established, and the impacts of climate change and human activity on runoff and sediment transport of flood event after 1979 are analyzed.