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The complex, processes-based SWAT can simultaneously simulate water quantity and quality and evaluate the effects of land use change and human activities, which makes it preferable for sustainable water resource management in the Xixian watershed where agricultural activities are intensive.Ībbott MB, Bathurst JC, Cunge JA, O’Connell PE, Rasmussen J (1986) An introduction to the European hydrological system-systeme hydrologique European ‘SHE’. For the purposes of flood forecasting and runoff simulation, XAJ requires minimum input data preparation and is preferred to SWAT. Comparison between SWAT and XAJ shows that model performances are comparable for hydrologic modeling. Both SWAT and XAJ can reasonably simulate surface runoff and baseflow contributions. The results show that both SWAT and XAJ perform well in the Xixian River Basin, with percentage of bias (PBIAS) less than 15%, Nash-Sutcliffe efficiency (NSE) larger than 0.69 and coefficient of determination (R 2) larger than 0.72 for both calibration and validation periods at the four stream stations. Daily runoff data from the same four stations were applied to validate model performance from 1997 to 2005. Ten-year daily runoff data (1987–1996) from four stream stations were used to calibrate SWAT and XAJ.
Due to the lack of publicly available data, emphasis has been put on geospatial data collection and processing, especially on developing land use-land cover maps for the study area based on ground-truth information sampling. In this study, we evaluated the performance of SWAT for hydrologic modeling in the Xixian River Basin, located at the headwaters of the Huaihe River, and compared its performance with the Xinanjiang (XAJ) model that has been widely used in China. There is a pressing need for a watershed model to better understand the interaction between land use activities and hydrologic processes and to support sustainable water use planning. Already declining water availability in Huaihe River, the 6th largest river in China, is further stressed by climate change and intense human activities.
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