Table 1.

Environmental factors involved in modeling.

type	Variable code	environmental factor	unit
climatic factor	bio3	Isothermal property	%
	bio5	Maximum temperature in hottest month	°C
	bio6	Minimum temperature in coldest month	°C
	bio8	The wettest quarterly average temperature	°C
	bio13	The wettest monthly precipitation	mm
	bio14	The driest monthly precipitation	mm
Topographic factor	elev	Altitude	m
	slope	Slope variability	%
Soil factor	t_cec_soil	Cation exchange capacity of topsoil	%
	t_caco3	Carbonate or lime content	%
	t_oc	Organic carbon content in topsoil	%
	t_bs	Basic saturation	%