Daylength predominates the bud growth initiation of winter deciduous forest trees in the monsoon region of China.

ABSTRACT: Climate warming has induced significant shifts in spring phenology over both temperate and boreal forests. The timing of bud growth resuming from dormancy is crucial for predicting spring phenology. However, the mechanisms by which environmental cues, other than chilling accumulation, initiate bud growth remains unclear. By constructing a revised process-based spring phenology model incorporating photoperiod and temperature triggers of bud growth, we simulated the first leaf unfolding and first flowering dates of four deciduous forest trees during 1981-2014 at 102 stations across China's monsoon regions. Then, we revealed spatial patterns of the two triggers. Moreover, we compared fitting precision and robustness of the revised model with three mainstream models. Results show that the revi

SUBMITTER: Lang W 

PROVIDER: S-EPMC10808619 | biostudies-literature | 2023

REPOSITORIES: biostudies-literature