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A STUDY ON PHENOLOGY OF WOODY PLANTS IN BEIJING

Ren Xianwei Liu Xiuzhen Li Zhen  
This is a summary of nearly 30 years' phenologic observations on 120 species of woody plants in Beijing.Early or late start of the phenologic events in the Spring season depends mainly on air temperature.Annual range of variation in phenophase of the woody species is in accordance with the change of accumulative active temperatures in that year.Different species have their own phenophases.Each species has strictly its own sequence of phenophases.The phenological characteristics of each species are closely related with its environment as well as with its biological character.Phenospectrum of each species and a formula for prediction of its phenology are given.Based on tree phenology,a method to arrange forestry practices is also proposed.
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