Fig. 1: Global aridity index map and location of study sites across the climatic gradient in Israel.
From: Large variations in afforestation-related climate cooling and warming effects across short distances
The Aridity Index is calculated as the ratio between Mean Annual Precipitation and Mean Annual Potential Evapotranspiration (Data source: Global AI v2 http://www.cgiar-csi.org). AI was then used to classify hyper-arid (AI < 0.05), arid (0.05 < AI < 0.2), semi-arid (0.2 < AI < 0.5), dry-subhumid (0.5 < AI < 0.65), and humid (AI > 0.65) areas. The enlarged inset map shows the climatic gradient in Israel, indicating the paired site’s locations of forested (pine or oak) and adjacent non-forested ecosystems. AI classes are presented with the color palette from orange (hyper-arid) to green (humid).
