Fig. 3: Results from the two-tailed Pearson correlation analysis between the environmental factors and tree morphological traits (n = 36).
From: Drought-modulated allometric patterns of trees in semi-arid forests
The color and size of the circles show the correlation coefficient. The asterisk indicates significance: *P < 0.1; **P < 0.05; ***P < 0.01. The abbreviations used for the plant traits and environmental factors are as follows: plant height (Height), ratio of the height under the crown and tree height (CLR), breast height diameter (DBH), trunk dominance ratio (TDR), canopy area (CA), leaf area index (LAI), ratio of the second-order and first-order branch lengths (Sl/Fl) and counts (Sc/Fc), leaf area (LA), specific leaf area (SLA), leaf tissue density (LTD), and leaf main vein length (LV); mean annual precipitation (MAP), interannual variability in precipitation (CVP), regional solar irradiation (Radiation), mean annual temperature (MAT), Palmer drought severity index (PDSI), annual potential evapotranspiration (PET), annual actual evapotranspiration (AET), soil bulk density (BD), altitude (Altitude), slope (Slope), aspect (Aspect), average tree age (Age), and percentage tree cover (Cover) of the plots. For a detailed explanation of the plant traits, refer to Supplementary Table 3.
