Impact of Logistics Development on Economic Growth: An Empirical Research from Guangdong Province in China

Table 1

Evaluation indices of logistics industry development.

First grade index	Second grade index
Industrial scale	A11: post and telecommunications revenue (hundred million yuan)
	A12: revenue per square km from post and telecommunications (million yuan/km^2)
	A13: total freight (ten thousand tons)
	A14: total freight per square km (ton/km^2)
Infrastructure	A21: road density (km/km^2)
	A22: car ownership per capita (car/million persons)
	A23: mobile ownership per km^2 (ten thousand/km^2)
Human resources	A31: logistics employment (millions)
	A32: the proportion of logistics employment with respect to all industrial employees (%)
Industrial support	A41: number of industrial enterprises above the designated size (units)
	A42: number of wholesale and retail trade enterprises above the designated size (units)