Correlation of annual average normalised difference vegetation index (NDVI) with (A) the average annual precipitation (MAP) and (B) water availability measured as the average of monthly precipitation (mm)–potential evapotranspiration (PET, mm) of each vegetation type.

<p>The vegetation types are indicated by codes (see <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0144512#pone.0144512.t001" target="_blank">Table 1</a>). The coefficient of determination (r²) is shown for significant relationships (P < 0.05). Points and error bars indicate mean ± SE (for n see <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0144512#pone.0144512.t001" target="_blank">Table 1</a>) and the grey bands indicate the 95% confidence limits.