土地利用/覆被变化对东辽河流域土壤侵蚀的影响研究  

Effects of Land Use/Cover Change on Soil Erosion in the East Liaohe River Basin

作　　者：伊燕平 洪德法 高金花[1,3] 焦志超 Yi Yanping;Hong Defa;Gao Jinhua;Jiao Zhichao(Institute of Water Resources and Environmental Engineering,Changchun Institute of Engineering,Changchun,Jilin 130012,China;Changchun Municipal Engineering Design and Research Institute,Changchun,Jilin 13003,China;Jilin Provincial Water Engineering Safety and Disaster Prevention Laboratory,Changchun,Jilin 130012,China;Jilin Provincial Bureau of Hydrology and Water Resources,Changchun,Jilin 130000,China)

机构地区：[1]长春工程学院水利与环境工程学院,吉林长春130012 [2]长春市市政工程设计研究院有限责任公司,吉林长春130033 [3]吉林省水工程安全与灾害防治实验室,吉林长春130012 [4]吉林省水文水资源局,吉林长春130000

出　　处：《绿色科技》2022年第16期1-5,15,共6页Journal of Green Science and Technology

基　　金：吉林省教育厅科学技术研究项目(编号:JJKH20210679KJ);长春工程学校科技基金项目(编号:32020046)。

摘　　要：采用假设情景法构建了情景1城市用地扩张和情景2生态退耕2种东辽河流域土地利用/覆被变化情景,结合GIS手段与SWAT模型分析了不同情景对流域土壤侵蚀的影响。结果显示:与基准期相比,情景1模式下,土壤侵蚀面积均呈增加态势,其中中度侵蚀面积增幅达34%,且旱地与乡镇用地土壤侵蚀强度指数分别超过基准年的6%、21%。情景2模式下,土壤侵蚀面积及强度缩减比例均在3%以上。结果表明:东辽河流域内城市化进程的加快会造成土壤侵蚀面积增加,而植被盖度的提高能有效控制流域土壤侵蚀的发生发展。研究结果可为东辽河流域土地利用规划和水土流失防治工作提供科学参考。Two scenarios of land use/cover change in the East Liaohe River basin,scenario 1 urban land expansion and scenario 2 ecological conversion,were constructed by using the hypothesis scenario method,combined with GIS and SWAT model.The effects of different scenarios on soil erosion were analyzed.The results showed that compared with the base period,the soil erosion area increased under scenario 1,and the moderate erosion area increased by 34%,and the soil erosion intensity index of dry land and township land exceeded 6% and 21% of the base year respectively.In scenario 2,soil erosion area and intensity decreased by more than 3%.The results show that the acceleration of urbanization in the East Liaohe River basin will increase the area of soil erosion,and the increase of vegetation coverage can effectively control the occurrence and development of soil erosion.The results will provide scientific reference for land use planning and soil erosion control in East Liaohe River Basin.

关 键 词：土地利用/覆被变化 SWAT模型 土壤侵蚀 东辽河流域 

分 类 号：S157.1[农业科学—土壤学]