JOURNAL OF NATURAL RESOURCES ›› 2018, Vol. 33 ›› Issue (5): 828-839.doi: 10.11849/zrzyxb.20170514

• Resource Evaluation • Previous Articles     Next Articles

Quantitative Analysis of the Impacts of Climate Change and Human Activities on Annual and Maximum Daily Runoff in the Wujiang River Basin

LIN Xian1,2, CHEN Xiao-hong1, HE Yan-hu1, LI Shen-lin1, ZHENG Yan-hui1   

  1. 1. a. Center for Water Resources and Environment, b. Guangdong Engineering Technology Research Center of Water Security Regulation and Control for Southern China, c. Key Laboratory of Water Cycle and Water Security in Southern China of Guangdong High Education Institute, Sun Yat-sen University, Guangzhou 510275, China;
    2. Water Resources Department of Guangdong Province, Guangzhou 510000, China
  • Received:2017-05-27 Revised:2017-09-05 Online:2018-05-20 Published:2018-05-20
  • Supported by:
    National Natural Science Foundation of China No. 51509127 and 91547202; National Key R & D Program of China No. 2017YFC0405900; The Chinese Academy of Engineering Consulting Project No. 2015-ZD-07-04-03; Public Welfare Project of the Ministry of Water Resources, No. 200901043-03.

Abstract: Focusing on the quantitative identification of the impacts of climate change and human activities on annual and maximum daily runoff at a basin scale, taking the Wujiang River Basin, South China for instance, this paper simulated and quantitatively evaluated the impacts of climate change and human activities on runoff and their contribution ratios to runoff at daily and annual scales by using the HIMS model and elastic coefficient method. The results showed that, the HIMS model performed well in the Wujiang River Basin at daily scale. The Nash-Sutcliffe coefficients are 0.85 and 0.77, and the absolute values of water balance errors are 3.1% and 3.3% respectively in calibration and validation periods. The results obtained by the HIMS model and the elastic coefficient method indicated that climate change is the dominat factor that leads to the increase of annual runoff and human activities cause the runoff decrease while its contribution ratio is smaller compared to that of climate change. The annual maximum daily runoff showed an upward trend due to climate change and human activities. The contribution ratios of climate change and human activities are 94% and 6%, respectively. Climate change has greater impact on annual maximum daily runoff than that on annual average runoff.

Key words: climate change, HIMS model, human activities, maximum daily runoff, quantitative analysis, Wujiang River Basin

CLC Number: 

  • P339