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当前位置: 首页 > 文章 > 幼年赤桉胸径与冠幅、树高、材积的相关性分析 桉树科技 2014 (4) 17-22
Position: Home > Articles > Correlation Analyses Between DBH, Crown Width, Height and Volume of Eucalyptus camaldulensis Eucalypt Science & Technology 2014 (4) 17-22

幼年赤桉胸径与冠幅、树高、材积的相关性分析

作  者：
高灵;王瑞辉;王睿;谢耀坚;吴志华
单  位：
国家林业局桉树研究开发中心;中南林业科技大学森林培育国家级重点实验室
关键词：
赤桉;胸径;冠幅;树高;立木材积;回归模型
摘  要：
对试验地的1 470株赤桉进行树高、胸径、冠幅的测量,并计算出样木的单株材积。把胸径分别和冠幅、树高及株材积进行相关性分析并且建立数学模型,用SPSS软件对所选模型进行曲线估计。结果表明:其中幂方程的R2最大,F值亦为最大,说明赤桉胸径与树高的幂关系显著,可确定赤桉胸径与树高的最优回归方程为H=1.804 D0.673。胸径—冠幅,胸径—材积的最优模型分别为CW=0.674 D0.561,V=0.000 161 4 D2.341。分别对3组最优模型进行适应性检验,结果表明:材积的3个最优回归模型预测误差均在±3%以内,方程预测精度较高,可用于估算立木树高、冠幅、材积。
译  名：
Correlation Analyses Between DBH, Crown Width, Height and Volume of Eucalyptus camaldulensis
作  者：
GAO Ling;WANG Rui-hui;WANG Rui;XIE Yao-jian;WU Zhi-hua;The Key Lab of Silviculture of State, Central South University of Forestry and Technology;China Eucalypt Research Centre;
关键词：
Eucalyptus camaldulensis;;DBH;;crown width;;tree height;;standing timber volume;;regression model
摘  要：
Data were collected from 1 470 Eucalyptus camaldulensis trees including tree height, diameter at breast height and crown width measurements. Individual tree volume was calculated from these parameters for each individual tree. Analyses of the correlations between diameter at breast height, crown width, tree height and individual tree volume were carried out using SPSS software. The results show that the largest of which R2, F value of the maximum power equation also shows diameter at breast height was significantly higher power relationship can be determined E. camaldulensis optimal diameter and tree height regression equation H = 1.804 D0.673. Similarly come DBH – crown width, DBH-volume optimal model was CW = 0.674 D0.561, V = 0.000 161 4 D2.341. To ensure the accuracy of the research and analyses of, respectively, three groups of the far right model for adaptive test results showed that three best regression model to predict volume are in error within ± 3.0%, higher prediction accuracy equation can be used to estimate the standing tree height, crown width and volume.

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