53年大小天然蒙古栎纯林胸径分布规律初探  

Research on the Distribution Law of DBH of Pure Forest of Mongolian Oak

作　　者：李燕[1] 郭彦林[2] 

机构地区：[1]北华大学林学院,吉林吉林132013 [2]吉林省林业调查规划院,吉林长春130022

出　　处：《绿色科技》2015年第12期45-46,共2页Journal of Green Science and Technology

基　　金：国家科技支撑计划项目(编号:2012BAD19B07);吉林市科技计划项目(编号:2013625021)资助

摘　　要：对蛟河市辖区0.06hm2大小样地内53年大小蒙古栎纯林样木进行了统计,结果表明：样木共计137株,样地内林木密集、生长差异较大、胸径普遍较小,样木主要集中在7~9cm、9~11cm、11~13cm、13~15cm 4个区段范围内,4个区段样木之和约占总样木数的73%,样地内样木平均胸径珡D=12.5cm,林木胸径整体分布服从左偏正态分布。胸径分布回归方程为：y=-0.7831x2＋7.9039x。There are totally 137 sample treesof 53 yearsMongolian oakin 0.06 hmz of Jiaohe City. The sample plothas high density, large growth difference and general small DBH. The sample trees are mainly concentrated in four sec- tions, namely the 7 to 9cm, 9 to llcm, 11 tol3cm, and 13 to 15cm, which occupy about 73% of the total number of sample trees. In the sample plot, the average DBH of sample treesis 12.5 cmand the overall distribution of DBH is left--skewed distributed. The regression equation of the DBH distributionis＂y = -0. 7831x2 ＋ 7. 9039x＂.

关 键 词：蒙古栎 胸径 分布 

分 类 号：S792.186[农业科学—林木遗传育种]