Different types of industrial agglomeration and green total factor productivity in China: do institutional and policy characteristics of cities make a difference?

Environmental Sciences Europe

Table 3 Effects of various types of industrial agglomeration (IA) on EC and TC

Variables	(1)	(2)	(3)	(4)	(5)	(6)
Variables	EC	TC	EC	TC	EC	TC
lnLQ_MAN	0.012	0.030***
	(0.51)	(2.95)
lnLQ_PS8			0.148**	− 0.069***
			(2.08)	(− 3.06)
lnCOAG					0.113	0.037
					(1.33)	(1.29)
lnPopDensity	− 0.009	− 0.000	− 0.008	− 0.001	− 0.009	− 0.000
	(− 0.76)	(− 0.03)	(− 0.68)	(− 0.06)	(− 0.74)	(− 0.01)
lnTaddSadd	− 0.045*	− 0.017	− 0.061***	− 0.012	− 0.046*	− 0.019
	(− 1.85)	(− 1.45)	(− 2.88)	(− 1.04)	(− 1.92)	(− 1.65)
lnRegulation	0.905***	− 0.185*	0.931***	− 0.200*	0.913***	− 0.184*
	(6.18)	(− 1.75)	(6.38)	(− 1.88)	(6.21)	(− 1.73)
lnSciEdu	0.012	− 0.057***	0.010	− 0.057***	0.013	− 0.057***
	(0.49)	(− 2.96)	(0.39)	(− 2.99)	(0.53)	(− 2.97)
lnuF	− 0.003	− 0.001	− 0.003	− 0.001	− 0.003	− 0.001
	(− 0.56)	(− 0.39)	(− 0.66)	(− 0.34)	(− 0.55)	(− 0.40)
Constant	2.255***	− 1.125***	2.289***	− 1.157***	2.158***	− 1.169***
	(9.81)	(− 6.60)	(10.07)	(− 6.79)	(8.95)	(− 6.79)
Observations	3934	3934	3934	3934	3934	3934
R-squared	0.463	0.616	0.466	0.617	0.464	0.616
Number of cities	281	281	281	281	281	281