Table 4. Partial correlation coefficients and significance by site topographical factors.

	Parent rock	Climate zone	Soil texture	Topography	Altitude
Partial correlation coefficients	0.1485	0.2404*	0.4129**	0.3014**	0.4023**
Significant level	0.1623	0.0225	0.0001	0.0039	0.0001