Table 3.

Correlation matrix of rock exposures and its influencing factors under different sampling scales.

Sampling Scale	Slope	Elevation	Soil Thickness	Soil Bulk Density	Rock Content	Slope Position
150 m × 150 m	0.893 **	0.991 **	−0.913 **	−0.862	0.510	0.480 *
300 m × 300 m	0.721 **	0.512 *	−0.732 *	−0.602	0.610 *	0.913 **
450 m × 450 m	0.763 **	0.813 **	0.416	0.402	0.913 **	0.680 **
600 m × 600 m	0.503 *	0.453	0.436	0.436	0.684 **	0.406 *
750 m × 750 m	0.421	0.112	0.462	0.302	0.780 *	0.741 *
900 m × 900 m	0.689	0.363	−0.637 **	0.412	0.496	0.501*

** Indicates that the correlation is significant when the confidence level (double measure) is 0.01; * the correlation is significant when the confidence level (double measure) is 0.05.