高原农业2025，Vol.9Issue(2)：141-152,12.DOI:10.19707/j.cnki.jpa.2025.02.001
森林生长的"树木个性"
"Tree Personality"in Forest Growth
摘要
Abstract
Tree species diversity and interspecific variation have received much attention in studies of forest stability,whereas intraspecific variation is largely neglected.This study aimed to quantify growth differences in individuals of the same tree species in forests,identify the characteristics of intraspecific variation and discuss its ecological effects.The objects of the study were two single canopy-species forests located in Meili Snow Mountain and Boshula Ridge in southeastern Xizang.We developed a new index to evaluate tree growth asynchrony and used tree-ring data to examine growth differences among trees and their relationships with community structures.The results showed that(1)radial growth of trees exhibited obvious individual differences in both forests in different intervals of the past three centuries,(2)these differences also existed in the five extreme drought years as reflected in meteorological records,and(3)individual differences in the ratio of tree-growth change had significant positive correlation with shrub cover and species richness of understorey layers.Based on these results,we proposed"tree personality"hypothesis in forest growth.We argue that individuals of the same tree species in forests have life-characterized"tree personality"in growth performance,spreading the capacity of trees to respond to stresses,disturbances and competition at the individual level,consequently favoring maintenance of the general stability in forest structure.关键词
树木年轮/种内差异/生长不一致/森林结构/森林稳定性Key words
Tree rings/Intraspecific variation/Growth asynchrony/Forest structure/Forest stability分类
农业科技引用本文复制引用
张齐兵,郑嘉诚..森林生长的"树木个性"[J].高原农业,2025,9(2):141-152,12.基金项目
国家自然科学基金资助项目(32271886),西藏柏木林在衰退事件后树木生长的恢复时间及其影响因素. （32271886）
