杉木人工林林分断面积分布规律的研究  

Basal area distribution of Chinese fir plantation

作　　者：段爱国[1] 张建国[1] 童书振[1] 李江南[2] 邓宗富[2] 

机构地区：[1]中国林业科学研究院林业研究所,北京100091 [2]中国林业科学研究院亚热带林业研究中心,江西分宜336600

出　　处：《福建林学院学报》2006年第3期247-252,共6页Journal of Fujian College of Forestry

基　　金：国家自然科学基金资助项目(30471389)

摘　　要：通过对24年生杉木人工林林分断面积分布规律的研究,得到4点主要结论:1)林分断面积分布特征指标与林分直径分布存在显著的差别;2)林分年龄对林分断面积分布的形状及不均质性具有极显著的影响,林分密度仅显著影响断面积分布的不均质性,而立地对断面积分布影响不显著;3)林分断面积分布偏度、峰度、变异系数均随林分年龄的增大呈增大趋势,且林分年龄对高密度林分的断面积分布影响更为显著;4)林分断面积分布曲线的拐点可作为一种新的分布特征指标,但存在一定的局限性.After studying on basal area distribution of Chinese fir plantation at the age of 24, four main conclusions were obLained： 1 ）the charactefistical indices of stand basal area distribution were obviously differemt from that of stand diameter distributions 2） stands age had greatly obvious affection to figure and uneven quality of stand basal area distribution, stand density only obviously af- fected uneven quality, and site index had no obvious affection; 3）the skewness, kurtosis and variation coefficient of stand basal area distribution all increased with increasing of stands age, and stand age had more obvious affection to high-density stand basal area distribution; 4）the inflection point of stand basal area distribution could be acted as a new charateristieal index to describe distributon data with some limitations.

关 键 词：杉木人工林 断面积分布 特征指标 分布曲线拐点 R-分布 

分 类 号：S791.27[农业科学—林木遗传育种]