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Impact of environmental change on runoff in a transitional basin:Tao River Basin from the Tibetan Plateau to the Loess Plateau,China

引用

Advances in Climate Change Research 2019年第4期10卷 214-224页

作者： SUN Long WANG Yue-Yang ZHANG Jian-Yun YANG Qin-Li BAO Zhen-Xin GUAN Xiao-Xiang GUAN Tie-Sheng CHEN Xin WANG Guo-Qing State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering Nanjing210029China Institute of Hydrology and Water Resources Hohai UniversityNanjing210098China Hydrology Bureau Ministry of Water ResourcesBeijing100053China College of Geographical Sciences Nanjing University of Information Science and TechnologyNanjing210044China Research Center fo r Climate Change Ministry of Water ResourcesNanjing210029China School of Resources and Environment University of Electronic Science and Technology of ChinaChengdu611731China

Quantification of the impacts of environmental changes on runoff in the transitional area from the Tibetan Plateau to the Loess Plateau is of critical importance for regional water resources *** and abrupt change points of the hydro-climatic variables in the Tao River Basin were investigated during *** also quantitatively separates the impacts of climate change and human activities on runoff change in the Tao River by using RCC-wbm *** indicate that temperature presented a significant rising trend(0.2℃per decade)while precipitation exhibited an insignificant decreasing trend(3.8 mm per decade)during *** runoff in the Tao River decreased significantly with a magnitude of-13.7 mm per decade and abrupt changes in 1968 and 1986 were *** to the baseline period(1956-1968),runoff in the two anthropogenic disturbed periods of 1969-1986 and 1987-2015 decreased by 27.8 mm and 76.5 mm,respectively,which can be attributed to human activities(accounting for 69%)and climate change(accounting for 31%).Human activities are the principal drivers of runoff reduction in the Tao River ***,the absolute influences on runoff reductions by the both drivers tend to increase,from 7.7 mm in 1969-1986 to 24.4 mm in 1987-2015 by climate change and from 20.2 mm to 52.2 mm by human activities.

关键词： Climate change Human activity Runoff change rccc-wbm model Runoff naturalization Attribution analysis Tao River Basin

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