Plants flowering phenology in Gannan alpine meadow

The research on the phenology of the grassland community could help cognize the function of the grassland community, and provide the background data for the ecosystem assessment. In this study, the factors that affect the flowering phenology of alpine meadow in Gannan were discussed in four aspects: geographical environment, functional traits, pollination modes and phylogeny. The results showed that, at the community level, the flowering period covered the whole growing season, but there was still a peak flowering period in the whole species. The first flowering date, peak flowering date and duration of flowering time were different. Each species has unique pattern in flowering phenology; Plants height(P<0.001) and seed size(P=0.034) could significantly predict flowering time; Wind-pollinated species flowered earlier than insect-pollinated species(P=0.008);There was a negative correlation between flowering phenology overlaps and phylogenetic distances.