Fig. 4. Proportion of colocated annual R_s change and each of the six driving factors at global and regional scales from 2000 to 2014.

The plot represents the percentage of the areas with both significant climate (or land-cover) change and significant annual R_s change to the areas with significant annual R_s change. Climate factors include TEM, PRE, and SPEI. Land-cover factors include TC cover, SV cover, and BG cover. This plot indicates that the significantly changed R_s in temperate and boreal regions was more commonly located in areas with significant changes in SV cover than in areas with significant climate change.