The Comparison and Modeling of the Driving Factors of Urban Expansion for Thirty-Five Big Cities in the Three Regions in China

Table 6

Urban expansion and driving factors in Western China.

Item	(1990–2010)	(1990–1995)	(1995–2000)	(2000–2005)	(2005–2010)
Population increment, POPI	0.1707	0.7961	0.1228	0.2537	−0.1804
GDP increment, GDPI	0.0902	−0.4907	2.9207	−0.2369	0.1660
Investment increment in capital construction, IICC	−0.0041	−0.0015	0.0155	0.0208	0.0696
Salary increment per capita, SIPC	0.0142	0.1159	0.0236	−0.0338	0.1406
Road increment, RI	0.0053	0.0123	0.0437	0.1559	0.0835
Secondary industry product increment, SIPI	−0.0649	0.2180	1.5654	−0.0884	0.1529
Tertiary industry product increment, TIPI	−0.0059	0.3083	1.2645	0.1103	−0.0566
Electricity consumption increment, ECI	0.0289	−0.0025	0.0197	0.0930	0.0455
Constant	0.0670	−0.0088	0.0496	0.1096	0.0268
Durbin-Watson stat	1.9862	1.6960	2.0995	2.7043	2.6269
-squared	0.2081	0.4667	0.3405	0.6997	0.6364
Adjusted -squared	0.0689	0.3374	0.2178	0.5186	0.4209
-statistic	1.4947	3.6092	2.7747	0.4566	2.9531
Prob (-statistic)	0.1189	0.0041	0.0144	0.8773	0.0064

The -test statistics are presented in parentheses. , , and represent statistical significance on a 10%, 5%, and 1% level, respectively.