广西大横枝杉干形与树冠形态因子的变化及其相关性分析
Analysis of the changes and correlation of stem form and canopy morphological traits of Guangxi characteristic Cunninghamia lanceolata
[目的]为揭示大横枝杉干形与主要树冠形态性状的变异规律及相关性，从而达到提高大横枝杉利用效率的目标。[方法]本文从大横枝杉干形、树冠形态(冠幅、冠长、冠长率、冠形率)等方面对大横枝杉开展了生长性状的相关性研究。[结果]经过相关性、多元线性回归和通径分析，结果表明:各参试性状间具有一定程度的相关性，干形与冠幅、冠长率和冠形率均呈显著相关。最优回归方程为Y=0.497-0.0 08X1+0.001X3+0.001X4，数据符合正态分布。[结论]最优回归方程可通过带冠幅、冠长率和冠形率等指标快速预估大径材干形，为大横枝杉科学、快速预测提供科学依据。
[Objective]In order to reveal the variation law and correlation between the stem form and the main canopy morphological traits of Guangxi characteristic Cunninghamia lanceolata,so as to achieve the goal of improving the utilization efficiency of Guangxi characteristic Cunninghamia lanceolata.[Method]In this paper,the correlation of growth traits of Guangxi characteristic Cunninghamia lanceolata was studied from the aspects of stem form and canopy morphological traits(crown width,crown length,crown length rate,crown shape rate).[Result]Through correlation,multiple linear regression and path analysis,the results showed that there was a certain degree of correlation among the tested traits,and the stem shape was significantly correlated with crown width,crown length rate and crown shape rate.The optimal regression equation was Y=0.497-0.008X1+0.001X3+0.001X4,and the data conformed to the normal distribution.[Conclusion]The stem form could be quickly estimated by the indexes of crown width,crown length rate and crown shape rate,which provided a scientific basis for the scientific and rapid prediction of Guangxi characteristic Cunninghamia lanceolata.
程琳;陈晓明;黄开勇;陈琴;
广西壮族自治区林业科学研究院 南宁 530002;广西壮族自治区林业科学研究院 南宁 530002;广西壮族自治区林业科学研究院 南宁 530002;广西壮族自治区林业科学研究院 南宁 530002;
Guangxi characteristic Cunninghamia lanceolata stem form canopy morphology correlation analysis
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