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

Table 11

Regional distribution of different threshold values according to the development level of the logistics industry.

Threshold interval	Province distribution at different time points
	2004	2012	2020
LnREG (LnLDL < 1.5741)	Tianjin, Hebei, Shanxi, Inner Mongolia, Liaoning, Heilongjiang, Anhui, Fujian, Jiangxi, Henan, Hainan, Chongqing, Sichuan, Guizhou, Shaanxi, Gansu, Qinghai, Ningxia, and Xinjiang	Hebei, Inner Mongolia, Guizhou, and Ningxia
LnREG (1.5741 ≤ LnLDL ≤ 2.0395)	Jilin, Jiangsu, Zhejiang, Shandong, Hubei, Hunan, Guangdong, Guangxi, and Yunnan	Shanxi, Liaoning, Fujian, Jiangxi, Shandong, Guangxi, Hainan, Gansu, Qinghai, and Xinjiang	Hebei, Shanxi, Inner Mongolia, Liaoning, Jiangxi, Hainan, Guizhou, Ningxia, and Xinjiang
LnREG (LnLDL > 2.0395)	Beijing and Shanghai	Beijing, Tianjin, Jilin, Heilongjiang, Shanghai, Jiangsu, Zhejiang, Anhui, Henan, Hubei, Hunan, Guangdong, Chongqing, Sichuan, Yunnan, and Shaanxi	Beijing, Tianjin, Jilin, Heilongjiang, Shanghai, Jiangsu, Zhejiang, Anhui, Fujian, Shandong, Henan, Hubei, Hunan, Guangdong, Guangxi, Chongqing, Sichuan, Yunnan, Shaanxi, Gansu, and Qinghai