北京林业大学学报2017，Vol.39Issue(9)：41-47,7.DOI:10.13332/j.1000--1522.20170184
云冷杉天然林林分空间结构对胸径生长量的影响
Effects of spatial structure on DBH increment of natural spruce-fir forest
摘要
Abstract
In order to explore the effects of the spatial structure of natural spruce-fir forest in Changbai Mountain of northeastern China on the individual DBH increment,two typical plots of natural spruce-fir forest were set in Jin' gouling Forest Farm in Wangqing County of Jilin Province of northeastern China to calculate the mingling and the neighborhood pattern at the stand and individual levels and discuss the distribution of spatial structure. Then, the effects of different spatial structure of spruce and fir on the DBH increment were analyzed combined with the mean values of the mean DBH increment of spruce and fir in the latest 5 years. The results showed that the average neighborhood patterns of both plots were about 0. 5, indicating a random distribution. The average mingling of both plots were 0. 65 and 0. 73, respectively, showing intense mixed state. The largest tree density appeared when neighborhood pattern and mingling were 0. 5 and 0. 75, respectively. In terms of stand, the average DBH increment of spruce and fir in plot 2 was slightly higher than plot 1 . The random distribution of fir and spruce had the largest DBH increment. With the increase of mingling of spruce and fir, the DBH increment of spruce and fir showed an increasing trend, suggesting that the increase of mingling can promote the growth of spruce and fir. In addition, the promotion was stronger for fir, showing that its growth is more sensitive to the intensity of the mixed.关键词
天然林/空间结构/胸径生长量Key words
natural forest/spatial structure/DBH increment分类
农业科技引用本文复制引用
吕延杰,杨华,张青,王全军,孙权..云冷杉天然林林分空间结构对胸径生长量的影响[J].北京林业大学学报,2017,39(9):41-47,7.基金项目
国家重点研发计划课题(2017YFC0504101). （2017YFC0504101）
