Extended Data Fig. 6: Phenological sensitivity of soil microbial (Rm) and plant root respiration (Rr) to warming in the Northern Hemisphere (20°–90°N) and associated prediction uncertainty, evaluated by standard deviation (SD).
From: Divergent phenological responses of soil microorganisms and plants to climate warming

a, Phenological sensitivity of Rm. b, Phenological sensitivity of Rr. c, SD of phenological sensitivity of Rm. d, SD of phenological sensitivity of Rr. Phenological sensitivity is predicted using AutoML, averaged over five runs, while SD is derived from predictions across these runs. In (a-b), R2 indicates model performance based on the relationship between measured phenological sensitivities and predicted values. Numbers in brackets at the top show the percentage of pixels with advanced phenology (left) and delayed phenology (right). Comparisons are made between temperate (Tem., 2 °C ≤ Mean annual temperature ≤ 17 °C) and boreal regions (Bor., Mean annual temperature < 2 °C). Double asterisks (**) indicate statistically significant differences (P < 0.01).