文献类型：期刊文献

中文题名：基于树冠因子的林木竞争指数研究

英文题名：Study of Tree Competition Index Based on Crown Feature

作者：张晔珵[1] 张怀清[1] 陈永富[1] 李永亮[1] 马莉燕[1]

第一作者：张晔珵

机构：[1]中国林业科学研究院资源信息研究所

年份：2016

卷号：29

期号：1

起止页码：80-84

中文期刊名：林业科学研究

外文期刊名：Forest Research

收录：CSTPCD;;Scopus;北大核心:【北大核心2014】；CSCD:【CSCD2015_2016】；

基金：国家自然科学基金(31170590);国家863计划课题(2012AA102002)

语种：中文

中文关键词：树冠因子;竞争指数;林木生长量;杉木人工林

外文关键词：crown factor; competition index; increment; Cunninghamia lanceolata plantation

分类号：S711

摘要：[目的]以湖南省黄丰桥国有林场杉木纯林为研究对象,进行树木竞争指数的研究,基于Hegyi简单竞争指数的形式,提出包含反映树冠特征因子的树冠竞争指数。[方法]将树冠竞争指数和Hegyi简单竞争指数分别与胸径增长量进行相关分析。[结果]Kendall’s tau-b系数、Spearman’s rho系数和相关系数R2均显示树冠竞争指数与林木生长量的相关性高于Hegyi简单竞争指数。[结论]该结果表明树冠竞争指数与林木生长量有更强的相关性,可以更好地体现树冠在树木生长中的作用,能作为模拟林分生长量的依据。
The crown competition of Cunninghamia lanceolata pure stands of Huangfengqiao National Forest Farm in Hu＇nan Province was studied and the crown competition index was established. The crown competition index was based on Hegyi competition index and its factors were related to crown. From correlation analysis of DBH（ diameter at breast height） increment and two competition indexes,the Kendall＇s tau-b correlation coefficient,Spearman＇s rho correlation coefficients and R2 was got,which showed that the crown competition index was more relevant to DBH increment than Hegyi competition index. The results also showed that the crown competition index and tree growth had a more substantial correlation. Moreover,the crown competition index could preferably indicate crown＇s influence on tree growth. Consequently,the crown competition index can be used as the basis of stand growth simulation.