Variations of population structure and important value of the main edificators along the elevation gradient on the northern slope of Changbai Mountain  

长白山北坡主要建群种种群结构及重要值沿海拔梯度的变化(英文)

作　　者：姜萍 叶吉[2] 郝占庆[2] 邓红兵[3] 

机构地区：[1]北京林业大学资源与环境学院 [2]中国科学院沈阳应用生态研究所 [3]中国科学院生态环境研究中心

出　　处：《Journal of Forestry Research》2003年第2期117-121,共5页林业研究（英文版）

基　　金：This research was supported by Chinese Academy of Sciences '100 people'project; National Natural Science Foundation of China (39970123); and Changbai Mountain Open Research Station.

摘　　要：From 700 m to 1900 m on the northern slope of Changbai Mountain, 13 plots with an interval of 100 m in elevation were investigated to study the variations of population structure and important value of the main edificators along the elevation gradient. In their core distribution areas, most of the edificators had healthy population structure and could regenerate smoothly except Larix olgensis, but important value of Larix olgensis had no obvious variations with elevation changes, which showed that Larix olgensis had its own particularity and strong adaptability. At high elevation above 1800 m, Betula ermanii was the only species that could form a mono-dominant community. Important values of Pinus koraiensis and Acer mono had similar changing trends, and they had the similar ecological adaptabilities.在长白山北坡海拔700m至1300m,海拔每上升100m设置一样地,共计13个海拔梯度,研究主要建群种种群结构及重要值沿海拔梯度的变化。结果表明:除落叶松之外,其它树种在其核心分布区更新良好,均表现出一个健康发展种群的结构特征。落叶松的重要值沿海拔梯度变化不明显,表现出沿海拔梯度很强的适应性。随着海拔的上升,进入主林层的树种越来越少, 海拔高于1800m时, 岳桦是唯一可以成为建群种的树种,形成了单优势种群落。红松和色木的重要值沿海拔梯度表现出相似的变化规律,表明二者有近的生态适应性。图2表1参10。

关 键 词：Edificator POPULATION Important value STRUCTURE Elevation gradient Changbai Mountain 

分 类 号：S718.542[农业科学—林学]