Heterogeneity of Green TFP in China’s Logistics Industry under Environmental Constraints

Table 6

Robustness tests of two kinds of TFP index measurement results.

Depreciation rate (%)	Index indicator	Energy and environmental factors are not introduced		Introduce energy and environmental factors
		Method 1	Method 2	Method 1	Method 2
6.0	EC	0.9939	0.9936	0.9984	0.9984
	TC	1.0285	1.0271	1.0210	1.0206
	TFPC	1.0222	1.0205	1.0193	1.0190
4.0	EC	0.9943	0.9939	0.9984	0.9984
	TC	1.0273	1.0261	1.0208	1.0205
	TFPC	1.0214	1.0198	1.0192	1.0189
9.6	EC	0.9936	0.9932	0.9979	0.9984
	TC	1.0302	1.0287	1.0215	1.0209
	TFPC	1.0237	1.0218	1.0194	1.0192