Table 2. Environmental variables used in modeling the distribution of Didymodon in the study area.

Category	Variables	Abbreviation	Units
Bioclimatic	Annual Mean Temperature	t_mean	°C
	Temperature Seasonality	t_seas	dimensionless
	Max Temperature of Warmest Month	t_max	°C
	Min Temperature of Coldest Month	t_min	°C
	Annual Precipitation	p_ap	mm
	Precipitation in Wettest Month	p_max	mm
	Precipitation in Driest Month	p_min	mm
	Precipitation Seasonality	p_seas	dimensionless
	Potential evapotranspiration	PET	mm
	Aridity	AI	dimensionless
Topographic	Altitude	Altitude	m
	Aspect	Aspect	degree
	Slope	Slope	degree
Vegetation	Annual minimum NDVI	NDVI_min	dimensionless
	Annual mean NDVI	NDVI_mean	dimensionless
	Annual maximum NDVI	NDVI_max	dimensionless
	Amplitude NDVI	NDVI_amp	dimensionless
	Standard deviation NDVI	NDVI_std	Dimensionless