Towards the Coupling Coordination Relationship between Economic Growth Quality and Environmental Regulation: An Empirical Case Study of China

Table 1

The indicator system of the CCD.

Subsystem	Criteria	Indicator	Unit	Index type	Weight
EGQ	Stability	Year-on-year GDP growth rate	%	+	0.1190
		Price fluctuation	—	−	0.1186
		The unemployment rate	%	−	0.1185
	Efficiency	Labor productivity	Yuan/person	+	0.1094
		Ratio of technology transaction volume to GDP	%	+	0.0733
		Capital productivity	%	+	0.1113
	Direct benefit	Engel coefficient	%	−	0.1161
		Theil index	—	−	0.1176
		Labor compensation as a share of GDP	%	+	0.1162
ER	Intensity	Number of environmental personnel	Person	+	0.1104
		The proportion of wastewater treatment investment	%	+	0.0998
		The proportion of waste gas treatment investment	%	+	0.1026
	Pressure	Wastewater discharge per unit of output	Tons/ten thousand yuan	−	0.1180
		Unit sulphur dioxide emissions	Tons/one hundred million yuan	−	0.1183
		Solid waste per unit of output	Tons/ten thousand yuan	−	0.1184
	Performance	Green area per capital	M2/person	+	0.1136
		Household garbage harmless disposal rate	%	+	0.1154
		Urban sewage daily treatment capacity	Thousands of cubic meters	+	0.1035