This study investigates the impact of the mechanism of green public consumption policy on environmental equity and provides a feasible reference for the rational formulation of corresponding policies for China. Establish a mediation effect model using the stepwise regression and bootstrap analysis method, this study explores the direct and indirect effects of fiscal expenditure intensity on environmental equity. The results revealed that increasing fiscal expenditure on energy conservation and environmental protection cannot directly and significantly affect environmental equity, but it has a significant indirect positive impact on environmental equality through fiscal decentralization. It is also found that the impact of green public consumption policy on environmental equity varies in the eastern, central and western parts of China. Our findings indicated that the expenditure of energy conservation and environmental protection indirectly affects environmental equity through fiscal decentralization. The willingness of the government to protect the environment regulates the impact of green public consumption policies on environmental equity. The phenomenon of feeding the east from the west of resources and environment is obvious. According to the characteristics of regional development, we should formulate energy conservation and environmental protection policies and adjust the direction of policies to promote regional environmental equity.

Consumption, as an important factor to influence income and economic growth, is a research focus of many economists and scholars. Based on Keynes's absolute in-come hypothesis, this paper, with the help of Eviews6.0 software, constructs a consumption model between per capita traffic-communications consumption and per capita disposable income of the urban and the rural residents in China and a model between the income Gini coefficient and average propensity to traffic-communications consumption of the urban and rural residents against the relevant data during 1994-2010. Then the paper contrastively analyzes the relationship between the income and the traffic-communication consumption and the relationship between the internal income distribution and the traffic-communication consumption of the urban and the rural residents from a theoretical perspective. The paper draws a conclusion that there is a long-term equilibrium relationship between per capita traffic-communications consumption and per capita disposable income, as well as the long-term equilibrium relationship between income Gini coefficient and average propensity to traffic-communications consumption of urban and rural residents in China. Further, the paper puts forward some pieces of policy advice, such as continually improving the income level of Chinese residents, achieving the common prosperity through narrowing the gap between the rich and the poor, developing domestic transportation and communications industry greatly.