Fig. 2
From: Vegetation variations and driving mechanisms in northern China based on kNDVI
Distribution of average values for different drivers (a) Average annual precipitation, (b) average annual temperature, (c) average annual radiation, (d) wind speed, (e) altitude, (f) slope degree, (g) population density, (h) 0–10 cm soil moisture, (i) 10–40 cm soil moisture, (j) 40–100 cm soil moisture, (k) average annual AET, (l) average annual SPEI.
