Study on the Efficiency of Water-Energy-Food Linkage System in the Yellow River Basin
In order to promote the high quality development of the Yellow River Basin,the efficiency of water-energy-food(W-E-F)linkage system and its influencing factors were investigated,and the ways to improve the system efficiency were explored.Firstly,the efficiency of the W-E-F linkage system in the Yellow River Basin and provinces(regions)was measured by three-stage DEA model.Secondly,the efficiency results of the whole Yellow River Basin and provinces(regions)were analyzed in time and space.Finally,the influencing factors of W-E-F linkage system efficiency were investigated empirically by using the two-way fixed effect model.The results show that a)the efficiency of the whole W-E-F linkage system in the Yellow River Basin shows a fluctuating upward trend,and the spatial distribution pattern of efficiency in-creases in the upper,middle and lower Yellow River;b)The provinces(regions)in the Yellow River Basin have a certain capacity of re-sources allocation,and the scale efficiency value in the third stage has been decreased;c)Food security,energy security,environmental protection expenditure,R&D investment and per capita GDP all play significant positive roles in promoting the efficiency of W-E-F linkage system.
W-E-F linkage systemefficiency of W-E-F linkage systemthree-stage DEA modelYellow River Basin
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