SWAT模型和新安江模型在汉江旬河流域应用比较研究.pdf

Journal of Water Resources Research 水资源研究, 2014, 3, 307-314 Published Online August 2014 in Hans. /journal/jwrr /10.12677/jwrr.2014.34038 Comparative Study on the Performance of SWAT and Xin’anjiang Models in Xunhe Basin Zejun Li1,2, Pan Liu1,2, Wang Zhang1,2, Xizhen Chen1,2, Chao Deng1,2 1 State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan 2 Hubei Provincial Collaborative Innovation Center for Water Resources Security, Wuhan Email: lizejun09@163.com th th nd Received: Jun. 19 , 2014; revised: Jun. 25 , 2014; accepted: Jul. 2 , 2014 Copyright © 2014 by authors and Hans Publishers Inc. This work is licensed under the Creative Commons Attribution International License (CC BY). /licenses/by/4.0/ Abstract In this study, the SWAT and Xin’anjiang models were selected respectively as the representatives of the distributed and lumped hydrological models to simulate rainfall-runoff process in the Xunhe basin, with the measurements of the Nash-Suttcliffe efficiency coefficient, relative error and root mean square. The results illustrated that both models work well at daily rainfall-runoff process simulation, and the Xin’anjiang model outperforms the SWAT model. Based on the results of various flow (10% high flow, 50% middle flow and 40% low flow), the SWAT model effectively simulates the water quantity of middle and low flows, although can’t compete with Xin’anjiang mod- el in simulation of high flow. The results also show that selecting Nash-Suttcliffe efficiency coefficient as the objective function causes that the model priors fit the high flow better than the middle and low flow, because the mean square error of high fl