An analysis of effect of land use change on river flow variability

International Conference on Energy Engineering and Environmental Protection 2017

能源学;生态环境科学

Zhang, Tao^1 ; Liu, Yuting^2 ; Yang, Xinyue^3 ; Wang, Xiang^4

Bureau of Hydrology, Changjiang Water Resources Commission, Wuhan

430010, China^1

Changjiang River Estuary Bureau of Hydrology and Water Resources Survey, Shanghai

200136, China^2

College of Hydrology and Water Resources, Hohai University, Nanjing

210098, China^3

China Yangtze Power Co., Ltd., Yichang

443133, China^4

关键词: Annual average;    Daily discharge;    Flow charac-teristics;    Flow variability;    Land-use change;    Land-use scenario;    River flow;    SWAT model;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/121/5/052044/pdf
DOI  :  10.1088/1755-1315/121/5/052044

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Land use scenario analysis, SWAT model, flow characteristic indices and flow variability technology were used to analyze the effect of land use quantity and location change on river flow. Results showed that river flow variation caused by land use change from forest to crop was larger than that caused by land use change from forest to grass; Land use change neither from upstream to downstream nor from downstream to upstream had little effect on annual average discharge and maximum annual average discharge. But it had obvious effect on maximum daily discharge; Land use change which occurred in upstream could lead to producing larger magnitude flood more easily; Land use change from forest to crop or grass could increase the number of large magnitude floods and their total duration. And it also could increase the number of small magnitude floods but decrease their duration.