highly significantp < 0.01
The Mantel test results demonstrated a significant or highly significant correlation between gd and ggd (R 2 = 0.1942, p < 0.01), gd and pre (R 2 = 0.2018, p < 0.01), gd and vapr (R 2 = 0.3297, p < 0.01), gd and sra (R 2 = 0.3849, p < 0.01), and gd and tmin (R 2 = 0.0536, 0.01 < p < 0.05).