摘要
黄山松(Pinus taiwanensis Hayata)是亚热带中高海拔地区重要造林和用材树种,具有较大生态和经济价值.为探讨黄山松种群径级结构对海拔梯度的响应,在戴云山海拔1 000~1 700 m的黄山松群落每间隔100 m布设3个固定样地(25 m×25 m),研究黄山松种群径级结构的海拔梯度分布格局.结果表明:黄山松种群平均胸径为11.54 cm.目前,黄山松种群主要为幼树和中树,种群处于增长型向稳定型过渡阶段.随着海拔的升高,黄山松大径级树逐渐减少,小径级树逐渐增多.黄山松幼树和中树比例变化与林分密度、群落平均胸径、群落平均树高、黄山松胸径、黄山松树高具有显著相关性,幼树与中树具有极显著负相关关系,种群存在自疏效应.
As an important afforestation and timber species at middle to high elevation in subtropical region,Pinus taiwanensis Hayata provides great ecological and economic functions.In order to explore the response of P.taiwanensis diameter structure to dif-ferent elevations,3 permanent sample plots at size of 25 m×25 m each were set up every 100 m along elevation between 1 000-1 700 m in Daiyun Mountain.The results showed that the average DBH of P.taiwanensis population reached 11.54 cm.Currently,saplings and middle trees dominated P.taiwanensis population,and the population was in a transitional phase from development to stability.When the elevation increased,the proportion of tree in small diameter gradually increased,while the proportion of trees in medium diameter dropped.Changes in the proportions of saplings and middle trees significantly correlated with stand density,aver-age DBH,and average height of the community,diameter and height of P.taiwanensis population.Besides,there was a significant negative correlation between the number of saplings and middle trees,indicating a self-thinning effect in the community.
作者
江蓝
何中声
刘金福
冯雪萍
刘艳会
陈文伟
JIANG Lan;HE Zhongsheng;LIU Jinfu;FENG Xueping;LIU Yanhui;CHEN Wenwei(College of Forestry,Fujian Agriculture and Forestry University,Fuzhou,Fujian 350002,China;Cross-strait Nature Research Center,Fuzhou,Fujian 350002,China;Key Laboratory of Fujian Universities for Ecology and Resource Statistics,Fuzhou,Fujian 350002,China;Daiyun Mountain National Nature Reserve,Quanzhou,Fujian 362503,China)
出处
《福建农林大学学报（自然科学版）》
CSCD
北大核心
2019年第5期585-590,共6页
Journal of Fujian Agriculture and Forestry University:Natural Science Edition
基金
国家自然科学基金资助项目(31700550、31770678)
福建省科技厅资助项目(2015Y0042)
福建省自然科学基金资助项目(2019J01367)
戴云山自然保护区管理局资助项目(KH1401450)
关键词
径级结构
海拔
黄山松
戴云山
diameter structure
elevation
Pinus taiwanensis
Daiyun Mountain
