Abstract：This study intends to investigate the effects of land use change on non-point pollution in Dongliao River watershed (Jilin Province), by coupling SWAT and CLUE-S models. SWAT was calibrated and validated with the historical observations of streamflow, sediment and nutrients from 2000to 2007, CLUE-S model was applied to explore the dynamic changes of land use and its subsequent impacts on non-point pollution after validated with map of 2000and 2005, and driving forces of land use have been discussed using Logistic regression analysis. Finally two land use scenarios were proposed based on historical trend (scenario 1) and government planning (scenario 2), and SWAT model was further applied to simulate the effects of land use changes on non-point pollution. The comparison of simulated result from SWAT model indicate that the streamflow, sediment and all the nutrients have shown a decrease in scenario 2, which suggests that scenario 2is more favorable to control non-point pollution. This work may provide a strategic basis for development and utilization of land resource, eco-environmental protection and regional sustainable development planning.
孙丽娜, 卢文喜, 杨青春, 侯泽宇, 司昌亮. 东辽河流域土地利用变化对非点源污染的影响研究[J]. 中国环境科学, 2013, 33(8): 1459-1467.
SUN Li-Na, LU Wen-Xi, YANG Qing-Chun, HOU Ze-Yu, SI Chang-Liang. Effect of future land use caused change on the non-point source pollution in Dongliao River weatershed. CHINA ENVIRONMENTAL SCIENCECE, 2013, 33(8): 1459-1467.
