基于灰水足迹视角的工业用水与经济增长关系研究——以湖北省为例

Research on the relationship between industrial water and economic growth based on the perspective of grey water footprint:A case study of Hubei Province

从灰水足迹的视角出发,基于2003—2019年湖北省的时间序列数据,以灰水足迹和环境库兹涅茨曲线理论为基础,通过单位根检验与协整检验方法,对工业灰水足迹与经济增长之间的关系进行实证分析。结果表明,工业灰水足迹与经济增长之间的关系符合环境库兹涅茨曲线理论的假定,但是不同于传统的倒“U”型曲线,从灰水足迹视角下所得出的关系曲线呈现倒“N”型,且不存在拐点,可能的原因是湖北省的结构效应和技术效应长期强于规模效应,导致随着经济的增长,工业灰水足迹随之下降,且近似呈单调递减趋势。

From the perspective of gray water footprint,based on the time series data of Hubei Province from 2003 to 2019 and the grey water footprint and Environmental Kuznets Curve theory,an empirical analysis on the relationship between industrial grey water footprint and economic growth through the methods of unit root test and co-integration test was conducted.The results showed that the relationship between industrial grey water footprint and economic growth was in line with the assumptions of the Environmental Kuznets Curve theory,but different from the traditional inverted“U”curve.The relationship curve obtained from the perspective of gray water footprint presented an inverted“N”shape and there was no turning point.The possible reason was that the structural and technological effects of Hubei Province had long been stronger than the scale effects,which led to a decline in industrial gray water footprint with economic growth,and it was an approximately monotonously decreasing trend.