Research on the Impact of Environmental Regulation on Total Factor Energy Effect of Logistics Industry from the Perspective of Green Development

Table 8

Regression results statistics of the threshold effect of each variable.

INV (1)		HUC (2)		LDL (3)
LnEDL	0.238; (0.097)	LnEDL	0.356; (0.000)	LnEDL	0.195; (0.0977)
LnURB	−0.355; (1.055)	LnURB	0.778; (1.015)	LnURB	0.705; (1.06)
LnOPEN	0.223; (0.209)	LnOPEN	0.085; (0.000)	LnOPEN	0.083; (0.000)
LnSTR	0.4331; (1.146)	LnSTR	0.191; (1.085)	LnSTR	0.469; (0.000)
LnIEN	0.357; (0.455)	LnIEN	0.008; (0.435)	LnIEN	0.113; (0.4555)
LnREG (LnINV < 5.077)	0.036; (0.603)	LnREG (LnHUC < 1.6799)	0.042; (0.000)	LnREG (LnLDL < 1.5741)	0.195; (0.782)
LnREG (LnINV ≥ 5.077)	0.646; (0.671)	LnREG (1.6799 ≤ LnHUC ≤ 2.1163)	0.049; (0.000)	LnREG (1.5741 ≤ LnLDL ≤ 2.0395)	0.311; (0.586)
		LnREG (LnHUC > 2.1163)	0.15; (0.522)	LnREG (LnLDL > 2.0395)	0.985; (0.947)

Note: is statistically significant at 1%, is statistically significant at 5%, and is statistically significant at 10%.