Fig. 1: A schematic diagram of how DTR regulates drought-induced growth loss for drought-vulnerable and drought-tolerant species.

Growth loss was defined as the percentage of growth reduction from non-drought growth to drought growth. The stomates of drought-vulnerable species are more sensitive to droughts, trees have greater growth losses in regions with higher DTR while smaller growth loss were observed in region with lower DTR due to the presumed regulation of DTR on drought-induced growth loss. In contrast, the stomates of drought-tolerant species are not sensitive to droughts, with trees only experiencing small growth loss during droughts.