Author(s): Caihong Hu; Zening Wu; Xinjian Guan; Xinling Wang; Zongqiang Gao
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Keywords: Runoff; Climate change; Human activities; Fenhe reservoir catchment
Abstract: In this paper, temporal variations in the hydrological process of the Fenhe reservoir catchment were examined and analyzed based on datum datasets since the 1960s used statistical approach and SWAT distributed model. In addition, the underlying causes of the variations were examined to address the influences of diverse human activities on hydrological process. The results indicated that (1) the water discharge from the Fenhe reservoir River were decreased significantly with an average rate of 1. 84m3/s per year between 1959 and 2008. (2) SWAT distributed model was calibrated and verified with the data between 1962~1970 in different hydrological stations. The results showed that the mean of the hydrological model ensemble can be used for runoff simulation. (3) The water discharge of the reservoir was decreased with gradually reducing of the Fenhe reservoir basin precipitation, increasing of human water, and the change of the weather conditions such as temperature, wind speed, etc. ,which have promoted the reducing of runoff. The change of these factors leads to a decrease of runoff in the catchment. The climate change has lead to 25. 01%of runoff decreased of Fenhe reservoir catchment; 74. 99%of runoff decreased caused by humanity surface water, land use change and groundwater exploitation reference on the Fenhe reservoir catchment.
Year: 2015