Effect of future land use caused change on the non-point source pollution in Dongliao River weatershed
Effect of future land use caused change on the non-point source pollution in Dongliao River weatershed
复制标题
东辽河流域未来土地利用变化对面源污染的影响
DOI：
--
复制
发表时间：
2013
期刊：
影响因子：
--
通讯作者：
SI Chang
中科院分区：
文献类型：
--
作者：
SI Chang
采用SWAT和CLUE-S模型，研究了土地利用变化对吉林省东辽河流域面源污染的影响。利用2000 - 2007年径流、泥沙和养分的历史观测资料对SWAT进行了校准和验证，利用2000 - 2005年的地图验证了CLUE-S模型，探讨了土地利用的动态变化及其对非点源污染的影响，并利用Logistic回归分析探讨了土地利用的驱动力。最后提出了基于历史趋势（情景1）和政府规划（情景2）的两种土地利用情景，并应用SWAT模型模拟了土地利用变化对面源污染的影响。SWAT模型模拟结果的对比表明，情景2的流量、泥沙和所有营养物均呈现减少趋势，说明情景2更有利于控制非点源污染。该研究可为土地资源开发利用、生态环境保护和区域可持续发展规划提供战略依据。
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.