Landscape metrics for characterization of forest landscapes in a sustainable management framework: Potential application and prevention of misuse

Free Access

Table II

Values of Spearman’s Rho indices showing statistical correlations. Results are shown for the three different buffer areas used, and comparing the two typological levels for the calculation. Asterisk (*) indicates significant correlation at P = 0.05 (bilateral); double asterisk (**) indicates significant correlation at P = 0.01 (bilateral).

	Spearman’s Rho

Landscape metric	Buffer distance = 500 m		Buffer distance = 1000 m		Buffer distance = 1500 m

	Exp.	Eq.	Exp.	Eq.	Exp.	Eq.
NP	0.498*	0.438	0.602**	0.557*	0.465	0.361
PD	0.486*	0.430	0.268	0.188	0.011	-0.98
TE	0.696**	0.665**	0.626**	0.610**	0.657**	0.606**
ED	0.669**	0.642**	0.385	0.373	0.259	0.079
AREA_MN	0.486*	0.430	0.268	0.188	0.011	-0.98
AREA_SD	0.102	0.080	0.236	0.158	0.030	-0.005
SHAPE_MN	-0.430	-0.350	-0.314	0.002	0.077	0.346
SHAPE_AM	0.711**	0.622**	0.278	0.257	-0.391	-0.410
SHAPE_SD	-0.096	-0.034	-0.437	-0.321	-0.267	-0.038
FRAC_MN	-0.420	0.006	0.589*	0.536*	-0.201	0.183
FRAC_SD	-0.264	0.027	0.546*	0.525*	0.048	0.036
PARA_MN	0.373	0.348	0.273	0.342	-0.011	-0.90
PARA_SD	0.377	0.402	0.573*	0.519*	-0.038	-0.032
ENN_MN	0.147	0.137	0.106	0.117	0.152	0.042
ENN_SD	0.262	0.170	0.613**	0.539*	0.263	0.150
SHDI	0.801*	0.808**	0.395	0.482*	0.364	0.662**
SIDI	0.816**	0.824**	0.643**	0.738**	0.558*	0.761**
MSIDI	0.816**	0.824**	0.643**	0.738**	0.548*	0.761**
SHEI	0.752**	0.783**	0.564*	0.503**	0.317	0.552*
SIEI	0.822**	0.839**	0.610**	0.643**	0.633**	0.759**
MSIEI	0.801**	0.790**	0.682**	0.529**	0.595**	0.692**
N_CLASS	0.682**	0.660**	0.565**	0.700**	0.341	0.521*