JOURNAL OF NATURAL RESOURCES ›› 2016, Vol. 31 ›› Issue (12): 2047-2059.doi: 10.11849/zrzyxb.20160091

• Resource Ecology • Previous Articles     Next Articles

The Regional and Structural Equilibrium Analysis of Grey Water Footprint in China Based on Gini Coefficient

SUN Cai-zhi, BAI Tian-jiao, HAN Qin   

  1. 1. a. College of Urban and Environment, b. Center for Studies of Marine Economy and Sustainable Development, Liaoning Normal University, Dalian 116029, China;
    2. a. College of Earth and Environmental Science, b. Center for Desert and Climatic Change in Arid Region, Lanzhou University, Lanzhou 730000, China
  • Received:2016-01-22 Online:2016-12-20 Published:2016-12-20
  • Supported by:

    Key Projects of National Social Science Fund, No. 16AJY009.

Abstract:

Based on calculating grey water footprint in 31 provinces of China’s mainland from 1997 to 2013, we select the population and GDP as indicators, and use the Gini coefficient to study the spatial and structural equilibrium of the grey water footprint of China during 1998-2013 in this paper. The results suggest that: 1) In terms of regional equilibrium, the economic grey water footprint is worse compared with the population grey water footprint, being close to the warning line (0.4) for a long time, and the proportionality of the eastern regions in the economic grey water footprint is relatively low while the proportionality of the western regions in the population grey water footprint is relatively low. 2) In respect to structural equilibrium, the Gini coefficient of economic grey water footprint has been raised to 0.583 0, that is to say, the proportionality has reached the “big gap” range, and the Gini coefficients of both agriculture and industry are fluctuating in the vicinity of 0.4 in these years, and in the meanwhile the equilibrium of the economic grey water footprint of the life declined significantly in recent years. 3) From the marginal effect point of view, the overall equilibrium can be improved by reducing the grey water footprint of the heavily polluted regions in the central and western regions and the agricultural grey water footprint of each province, and the equity of China’s water environment can be promoted effectively. At last, aiming at the specific problems of the grey water footprint balance in China, we put forward suggestions to reduce the grey water footprint and improve the equity of the water environment in China.

Key words: equilibrium, Gini coefficient, grey water footprint, region and structure

CLC Number: 

  • X52