The differences of residents′ dietary virtual water consumptions and their influencing factors in Beijing Tianjin Hebei region
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Abstract:
The characteristics of virtual water consumption have great impacts on water resources demand,therefore,it is of significance to investigate virtual water consumption and its differences of resident diet to build a healthy consumption model.This paper analyzed the residents′ dietary virtual water consumption in Beijing Tianjin Hebei region from 2000 to 2015,and explored their influencing factors.Results showed that a) The average annual dietary virtual water consumption during 2000-2015 was 9 833 billion m3,5.744 billion m3 and 24 002 billion m3 in Beijing,Tianjin and Hebei,respectively.The virtual water consumption also showed an obvious increasing trend,which could bring critical pressure to the regional water resources security;b)The residents′dietary virtual water consumption per capita was higher in Beijing than those of Tianjin and Hebei,and was higher in urban than that of rural areas;c) The consumption diversity index of residents′ dietary virtual water consumption also showed an upward trend,and it was higher in urban than that of rural areas as well.However,the gap was becoming narrowing gradually with time;d)The difference from consumption of high virtual water,such as meat and edible oil,was the main reasons for virtual water consumption.The improvement of grain productivity plays an important role in reducing the virtual water consumption per capita.The regulations of virtual water remand can be used to improve the efficiency of water consumption,construct a more reasonable consumption structure,and guide healthy consumption habits.
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