Table 1.

Environmental indicators used in this paper to model the potential distribution of Ophiocordyceps sinensis. There are 18 soil and 3 terrain indicators, and 19 bioclimatic indicators.

Index	Name	Mean	Unit
Bioclimatic variables	Bio 1	Annual mean temperature	°C
	Bio2	Mean diurnal range	°C
	Bio3	Isothermality (BIO2/BIO7) (* 100)	%
	Bio4	Temperature seasonality (standard deviation *100)	°C
	Bio5	Max temperature of warmest month	°C
	Bio6	Min temperature of coldest month	°C
	Bio7	Temperature annual range (BIO5-BIO6)	°C
	Bio8	Mean temperature of wettest quarter	°C
	Bio9	Mean temperature of driest quarter	°C
	Bio10	Mean temperature of warmest quarter	°C
	Bio11	Mean temperature of coldest quarter	°C
	Bio12	Annual precipitation	mm
	Bio13	Precipitation of wettest month	mm
	Bio14	Precipitation of driest month	mm
	Bio15	Precipitation seasonality (coefficient of variation)	1
	Bio16	Precipitation of wettest quarter	mm
	Bio17	Precipitation of driest quarter	mm
	Bio18	Precipitation of warmest quarter	mm
	Bio19	Precipitation of coldest quarter	mm
Terrain variables	ASL	Elevation	m
	SLOP	Slope	°
	ASPE	Aspect	°
Top soil variables	AWC_CLASS	AWC range
	T_GRAVEL	Topsoil gravel content	%vol
	T_SAND	Topsoil sand fraction	% wt
	T_SILT	Topsoil silt fraction	% wt
	T_CLAY	Topsoil clay fraction	% wt
	T_USDA_TEX_CLASS	Topsoil USDA texture classification	name
	T_REF_BULK_DENSITY	Topsoil reference bulk density	kg/dm3
	T_ BULK_DENSITY	Topsoil bulk density	kg/dm3
	T_OC	Topsoil organic carbon	% weight
	T_PH_H2O	Topsoil pH (H2O)	-log(H+)
	T_CEC_CLAY	Topsoil CEC (clay)	cmol/kg
	T_CEC_SOIL	Topsoil CEC (soil)	cmol/kg
	T_BS	Topsoil base saturation	%
	T_TEB	Topsoil TEB	cmol/kg
	T_CACO3	Topsoil calcium carbonate	% weight
	T_CASO4	Topsoil gypsum	% weight
	T_ESP	Topsoil sodicity (ESP)	%
	T_ECE	Topsoil salinity (Elco)	dS/m