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In order to obtain the impact of climate change and human activities on runoff variation,the Xiangjiang river basin was divided into three confluence areas:upper reaches,middle reaches and lower reaches.The methods of mathematical statistics including Mann-Kendall test and cumulative anomaly curve were used to analyze the evolution of runoff and meteorological factors in the upper reaches,middle reaches and lower reaches of Xiangjiang river basin during 1961-2013 years.The elasticity coefficient method was used to quantitatively analyze the influence of climate change and human activities on the runoff variation of Xiangjiang River Basin.The results show that the trend of runoff and precipitation in Xiangjiang River Basin is not obvious,the potential evapotranspiration is decreasing,and runoff change has obviously staggered feature.Climate change and human activities play a role in increasing runoff in Xiangjiang basin.Human activities have a greater impact on the upper reaches and middle reaches,while the lower reaches is mainly affected by the climate change.
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Basic Information:
DOI：10.20040/j.cnki.1000-7709.2018.09.009
China Classification Code:P333
Citation Information:
[1]ZOU Hao,HU Guo-hua,SHAO Quan-xi ,et al.Impacts of Climate Change and Human Activities on Runoff Variation in the Xiangjiang River Basin[J].Water Resources and Power,2018,36(09):34-38.DOI:10.20040/j.cnki.1000-7709.2018.09.009.
Fund Information:
湖南省重大水利科技计划项目(2013-243-2)
2018-09-25
2018-09-25