The Impact of Urban-Rural Income Inequality on Environmental Quality in China

Table 1

Variables symbols and meanings.

Variables	Meanings
Explained variable	EWater	Industrial wastewater discharge per capita
	EGas	Industrial waste gas emissions per capita
	EYF	Industrial smoke and dust emissions per capita
	ESO2	Industrial sulfur dioxide emissions per capita
	ESoild	Industrial solid waste discharge per capita
	E	Comprehensive index of environmental pollution
Core explanatory variables	G	Urban-rural income ratio
Control variables	EGDP	Real GDP per capita
	EGDP2	The square of real GDP per capita
	PD	The population density
	Urban	Urbanization level
	EDU	Education level
	Industry	Percentage of secondary industry
	Trade	Trade openness