Effects of Canopy Height on the Relationship Between Individual Leaf Mass and Leafing Intensity of 69 Broad Leaved Trees in Jiangxi Province

【Objective】This study exploredthe effect of different canopy heights of broad-leaved trees on the relationship between individual leaf mass and leafing intensity of current-year twigs,which is helpful to understand the impact of light environment changes on the twig traits. The main objective of this paper is to provide a theoretical basis for revealing the response mechanism of broad-leaved trees canopy growth to the changes in light environment.【Method】In this study,the standardized major axis estimation method was used to determine the allometric growth relationship (the relative growth of a certain part of the tree itself) between individual leaf mass (ILM) and leafing intensity (leafing intensity per unit stem mass or leafing intensity per unit stem volume,Lim and Liv) at the different canopy heights of 69 broad-leaved tree species in Yangjifeng Nature Reserve,Jiangxi Province. The effects of canopy heights (upper canopy height and lower canopy height) on individual leaf mass and leafing intensity relati