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

Table 2

CCD evaluation system.

C	Level	CCD	Level	VER > VEGQ	VER < VEGQ
[0.8, 1]	I	[0.8, 0.9]	I	EGQ hysteresis	ER hysteresis
[0.6, 0.8)	II	[0.7, 0.8)	II	EGQ hysteresis	ER hysteresis
[0.4, 0.6)	III	[0.6, 0.7)	III	EGQ hysteresis	ER hysteresis
[0.2, 0.4)	IV	[0.5, 0.6)	IV	EGQ hysteresis	ER hysteresis
[0.0, 0.2)	V	[0.4, 0.5)	V	EGQ hysteresis	ER hysteresis

Note: level I represents good coupling/coordination; level II represents moderate coupling/coordination; level III represents primary coupling/coordination; level IV represents tiny coupling/coordination; and level V represents mild coupling/coordination.