Analysis on the Spatio-Temporal Characteristics of Urban Expansion and the Complex Driving Mechanism: Taking the Pearl River Delta Urban Agglomeration as a Case

Table 5

Interaction of different factor pairs on urban expansion intensity during 2008–2015.

Driving factors		Natural factors				Socio-economic factors
		DEM	Slope	DTR	DTC	DRH	PRG	GDPG	PCWG	FAIG	FIGR
Natural factors	DEM
	Slope	0.1
	DTR	0.13^↗	0.08^↗
	DTC	0.23	0.22	0.23
Socio-economic factors	DRH	0.12	0.1	0.17^↗	0.28
	PRG	0.16^↗	0.12^↗	0.23^↗	0.33^↗	0.13
	GDPG	0.32	0.3	0.42^↗	0.42	0.36^↗	0.60^↗
	PCWG	0.21	0.18	0.33^↗	0.53^↗	0.2	0.35^↗	0.79^↗
	FAIG	0.3	0.28	0.35^↗	0.38	0.34^↗	0.61^↗	0.59^↗	0.71^↗
	FIGR	0.16	0.12	0.20^↗	0.39^↗	0.12	0.24^↗	0.74^↗	0.31^↗	0.54^↗