Category

Variable

Code

Source

Ecological Factors

digital elevation model (m)

DEM

NCC

vector ruggedness measure (m)

VRM

Calculated from NCC DEM

Artemisia aucheri-acantholimon

Art_auc_aca

RIFR

Stipa scariola

Sti_sca

RIFR

Artemisia siberi-stipa

Art_sib_sti

RIFR

Astragalus onobrychis

Ast_ono

RIFR

Psathyrostachys-agropyrun

Psa_agr

RIFR

Perennial grasses-thymus

Pre_gra_thy

RIFR

Ferula-Psathyrostachys

Fer_psa

RIFR

Astragalus-Stipa

Ast_sti

RIFR

Distance to springs (m)

Spring_dis

NCC

Anthropogenic Features

road density

Road_dns

NCC

building density

Build_dns

NCC

distance to eco-guards’ post (m)

Guard_dis

GPS locations