Stemflow has great influence on the hydrology and biogeochemistry of wooded ecosystems and is influenced by meteorological and biological factors.Nonetheless,it is a relatively poorly understood hydrological process,especially its relation with the ecological process of plant growth.This study aimed at analyzing the effects of growing biological factors on stemflow generation in an alpine Myricaria squamosa stand.Stemflow,meteorological factors and plant growth including basal diameter,branch length,total stem length,biomass and leaf area,were monitored with a whole growth season.Results showed that:Myricaria squamosa basal diameter,branch length and total stem length grew 10.84%,21.64% and 66.26% in a growth season,respectively.