Fig. 2: Mechanisms for the correlation between precipitation frequency and the dates of leaf senescence (DFS). | Nature Communications

Fig. 2: Mechanisms for the correlation between precipitation frequency and the dates of leaf senescence (DFS).

From: Declining precipitation frequency may drive earlier leaf senescence by intensifying drought stress and enhancing drought acclimation

Fig. 2

Panel (A) shows the structural equation model (SEM) analysis. Panels (B, C) represent the changes of drought response lag and drought recovery time with precipitation frequency. Panel (D) shows the moving window approach with respect of positive and negative sensitivities of DFS to precipitation frequency over 1982–2022 (see “Methods”). Panel (E) shows the relationship between precipitation frequency and the maximum daily precipitation size (N and P represent negative and positive correlations). Panel (F) represents the correlation between DFS and root zone soil moisture variability using coefficients of variation (%). Box plots display means (solid dots), medians (horizontal lines), the 25th and 75th percentiles (box edges), and minimum and maximum values (whiskers). The shaded background represents the standard deviation. The numbers in parentheses represent the number of pixels in the corresponding region. * and ** represent p < 0.05 and p < 0.01, respectively. The significance level was evaluated using a two-sided t test. Source data are provided as a Source Data file.

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