马尾松公益林胸径分布规律及冠幅影响因子分析  

Analysis on distribution of DBH and influencing factors of crown width of Pinus massoniana ecological forest

作　　者：李灏 任珅志 田育新[1,3] 成其书 邓楠 LI Hao;REN Shenzhi;TIAN Yuxin;CHENG Qishu;DENG Nan(Hunan Academy of Forestry,Changsha 410004,Hunan,China;Forestry Bureau of Cili County,Cili 427000,Hunan,China;Hunan Cili Forest Ecosystem National Positioning Observation and Research Station,Cili 427200,Hunan,China;Hunan Qingyanghu State-owned Forest Farn,Ningxiang 410627,Hunan,China)

机构地区：[1]湖南省林业科学院,湖南长沙410004 [2]慈利县林业局,湖南慈利427000 [3]湖南慈利森林生态系统国家定位观测研究站,湖南慈利427200 [4]湖南省青羊湖国有林场,湖南宁乡410627

出　　处：《湖南林业科技》2022年第4期67-69,79,共4页Hunan Forestry Science & Technology

基　　金：湖南省林业科技创新专项(HNGYL-2019-01)。

摘　　要：选取慈利县公益林中有代表性的马尾松林作为研究对象,分析其胸径分布规律以及胸径和树高对冠幅的影响。结果表明:慈利马尾松公益林的胸径分布呈右偏的单峰曲线,不符合正态分布。冠幅与胸径和树高分别呈极显著正相关和极显著负相关关系,且直接影响大于间接影响。The representative Pinus massoniana in the public welfare forest of Cili County was selected as the research objective.The DBH distribution and relationship between crown width, DBH and tree height were analyzed. Results showed that diameter distribution appeared to be inclined to be right side mountain-liking curve, and do not accord with normal distribution. There were significant positive/negative correlations between crown width and DBH/tree height, respectively, and the direct effect was higher than the indirect effect.

关 键 词：马尾松 公益林 胸径分布 冠幅 树高 慈利县 

分 类 号：S791.248[农业科学—林木遗传育种]