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Effect of drought on biomass fraction of root (RMF), stem (SMF), leaf (LMF), and reproductive (ReMF) in different plant forms. (a) herbaceous and woody plants, (b) perennial and annual herbaceous plants, and (c) cultivated and wild plants. Error bars show the 95% confidence intervals (CIs). Different letters indicate significant difference of the response ratios based on heterogeneity test. Effects of drought are expressed as percentage change relative to the control (%)
