Table 4.

Correlation test of urbanization and eco-environment indicators of BTH in 2000–2015.

	X1	X2	X3	X4	X5	X6	X7	X8	X9	X10	X11
X1	1
X2	0.896 **	1
X3	0.851 **	0.984 **	1
X4	0.901 **	0.997 **	0.990 **	1
X5	0.860 **	0.987 **	0.997 **	0.993 **	1
X6	0.846 **	0.978 **	0.998 **	0.985 **	0.996 **	1
X7	0.876 **	0.993 **	0.996 **	0.996 **	0.996 **	0.992 **	1
X8	0.903 **	0.997 **	0.988 **	0.997 **	0.989 **	0.985 **	0.994 **	1
X9	0.812 **	0.946 **	0.985 **	0.962 **	0.981 **	0.990 **	0.973 **	0.957 **	1
X10	0.779 **	0.930 **	0.977 **	0.944 **	0.969 **	0.985 **	0.959 **	0.943 **	0.995 **	1
X11	0.823 **	0.929 **	0.962 **	0.943 **	0.993 **	0.976 **	0.958 **	0.937 **	0.993 **	0.848 **	1

Note: X₁ = Built-up Area; X₂ = Population; X₃ = Expenditure of Education & Medical and Health Care; X₄ = GDP; X₅ = Government Revenue; X₆ = Government Expenditure; X₇ = FDI; X₈ = Highway Mileage; X₉ = Number of patents applied; X₁₀ = Number of patents granted; X₁₁ = Actual use of foreign capital. ** Correlation is significant at the 0.01 level (2-tailed).