辽东山区人工红松中龄林干形规律及与树冠结构的关联性研究  

Study on the stem shape of middle-aged Pinus koraiensis plantation and its responses to crown structure

作　　者：刘金义 LIU Jinyi(Dabiangou Forest Farm of Qingyuan Manchu Autonomous County,Fushun 113309,China)

机构地区：[1]国有清原满族自治县大边沟林场,辽宁清原113309

出　　处：《辽宁林业科技》2022年第1期9-13,69,共6页Liaoning Forestry Science and Technology

摘　　要：红松人工林是辽东山区重要的果材兼用林,在涵养水源及发展地方经济方面具有重要的作用。为准确模拟辽东山区人工红松的干形变化规律及其影响因素,该研究基于大边沟林场设置的人工红松中龄林固定样地的每木检尺数据,测量标准地所有树木的胸径、树高等,分析了不同林龄的单木干形变化规律及干形与树冠结构因子(冠长、冠幅)的关联机制。结果表明:人工红松中龄林的高径比为0.46~0.75,高径比与冠长具有一定的线性关系,其中54年生红松的高径比与冠长关系较为明显,而51年生、58年生的红松干形与冠长关系不明显。54年生红松林单木干形与冠幅存在较好的线性关系,决定系数最高达0.57,随着单木冠幅的增加,高径比呈减小的趋势。Pinus koraiensis plantation is an important pine nut-timber forest in mountainous area of eastern Liaoning Province. It plays an important role in water conservation and local economic development. The DBH and height for each tree in the permanent sample plot of middle-aged P. koraiensis plantation set up in Dabiangou forest farm were mearsunred for analyzing the variation of stem shape for single tree at different forest ages and the correlation mechanism between stem shape and crown structure factors(crown length and crown width). The results showed that the height diameter ratio of middle-aged P. koraiensis plantation were basically 0.46-0.75,and there was a certain linear relationship between height diameter ratio and crown length. The relationship between height diameter ratio and crown length of 54 year old P. koraiensis was more obvious,while the relationship between stem shape and crown length of 51-year-old and 58-year-old P. koraiensis were not obvious. There was a good linear relationship between single tree stem shape and crown width,and the highest determination coefficient was about 0.57. With the increase of single tree crown width,the height diameter ratio showed a decreasing trend.

关 键 词：人工红松林 高径比 树冠结构 辽东山区 

分 类 号：S791.247[农业科学—林木遗传育种]