Fig. 2: Response curves of Arabica coffee yield to major predictors in Yunnan.

The solid black line represents the average effect, while the shading indicates 95% confidence intervals. Points are partial residuals. a year, representing the increase in yield brought about by technological progress. b Multi-year average of VPDfl. c Multi-year average of TNnmt (°C). d Multi-year average of Tmaxfl (°C).