Resources Science ›› 2018, Vol. 40 ›› Issue (1): 89-103.doi: 10.18402/resci.2018.01.09

• Orginal Article • Previous Articles     Next Articles

Driving effect of spatial-temporal differences in water consumption in the Yangtze River Delta

Chenjun ZHANG1(), Cunxue ZHAO1, Lin LIN1, Xuyou YU2   

  1. 1. School of Business Administration, Hohai University, Changzhou 213022, China
    2. School of Economics, Fuyang Normal University, Fuyang 236037, China)
  • Received:2017-03-20 Revised:2017-08-29 Online:2018-01-20 Published:2018-01-20

Abstract:

It is of great significance to the construction of a water-saving society to quantify the driving effect of spatial-temporal differences in water consumption in the Yangtze River Delta. Here, the LMDI method was used to decompose the effects influencing spatial-temporal differences in water consumption in the Yangtze River Delta from 2000 to 2015 into intensity, structure, income and population effects. We found that, from the perspective of time, the decline in industrial water intensity and industrial structural adjustment jointly give rise to a decline in water consumption, especially the former. Except for primary industry in Shanghai, three industries’ water efficiency is generally improved. On the other hand, the role of industrial restructuring mainly comes from primary industry. Economic growth and population increases contributed to the increase in water consumption. From a spatial perspective, differences in water consumption and driving effects are closely related to the selection of reference objects. Primary and secondary industries’ water efficiency in Zhejiang has an obvious advantage in reducing water consumption, water efficiency in Shanghai has an advantage in the tertiary industry. Shanghai’s industrial structure is more advanced, but primary and secondary industries in Jiangsu and Zhejiang make up a greater proportion. More effort is expected to control the size of the population in Zhejiang and Shanghai, and that is an effective way to narrow spatial differences. Targeted and differentiated water-saving policy measures should be adopted to reduce water consumption in the Yangtze River Delta region and should involve technological progress, industrial restructuring and population control. Economic growth will increase water demand, being the driving force of social progress and increase water demand.

Key words: Yangtze River Delta, spatio-temporal difference, water consumption, LMDI