Abstract:In order to explore the influencing factors of leaf senescence phenology in subtropical evergreen broad-leaved forest, the phylogenetic relationships, functional traits of 72 woody plants and climate factors were studied in Gutianshan subtropical evergreen broad-leaved forest in Zhejiang Province from November 2018 to February 2021. The results showed that the leaf coloration period was from September to December, and the leaf drop period was from October to December. There was no significant correlation between the number of leaf drop species and monthly average temperature, monthly average precipitation and monthly average sunshine duration. The monthly number of leaf coloration species had weak correlation with monthly average temperature and monthly average sunshine duration. The deciduous property had a significant effect on leaf coloration and leaf drop stages. The phylogenetic relationship among species had no significant effect on leaf coloration and leaf drop stages. Therefore, both biotic and abiotic factors could affect leaf senescence for evergreen broad-leaved species, which had an important value for improving the prediction models of autumn phenology.
