Research on Freight Development of Guangdong Province Based on Grey Theory Model

Table 11

Index system of influencing factors of freight development in Guangdong Province.

First level indicators	Second level indicators	Variable	Characteristic
Regional economy factors	Gross domestic product		Positive correlation
	Proportion of added value of secondary industry		Positive correlation
	Total investment in fixed assets		Positive correlation
	Per capita disposable personal income		Positive correlation
	Total retail sales of social consumption		Positive correlation
	Total imports and exports		Positive correlation
	Balance of domestic and foreign currency deposits of financial institutions		Positive correlation
Science and technology factors	Number of Internet broadband access users		Positive correlation
	Internal expenditure of R&D funds		Positive correlation
	Number of employees of R&D		Positive correlation
	Education expenditure		Positive correlation
	Expenditure on science and technology		Positive correlation
Government policy factors	Revenue		Positive correlation
	Transportation expenditure		Positive correlation
Transportation environment factors	Number of employees in transportation, storage, and post industry		Positive correlation
	Length of railroad lines in service		Positive correlation
	Net tonnage of carrying vessel		Positive correlation
	Tonnage of truck		Positive correlation
	Oil pipeline mileage		Positive correlation
	Transport plane		Positive correlation