广西林业科学Issue(4)：444-449,6.
桂东区杉木地径与胸径、树高、材积相关分析
Correlation Analysis of Ground Diameter and DBH, Tree Height and Volume of Cunninghamia lanceolata in East Guangxi
闭海秀 1黄清经2
作者信息
- 1. 广西大学林学院，南宁 530005
- 2. 广西南宁树木园，南宁 530031
- 折叠
摘要
Abstract
Using ground diameter, DBH and tree height of Cunninghamia lanceolata from the control samples of second class investigation in Zhaoping county, Hezhou city, Guaingxi in 2009 as the sample data, and using the SPSS statistical analysis software and the knowledge of mathematical statistics, the correlation about the ground diameter and DBH, tree height and volume was analyzed. The correlations or curve regression models on ground diameter and DBH, and ground diameter and volume were established and the optimal model was selected , which could be used to calculate DBH and volume by ground diam-eter. The results showed that the ground diameter and tree height accumulated in strong positive correla-tion. The best regression model of ground diameter from 6cm to 20cm and DBH was D1. 3 = -0. 199 +0. 851D地. The regression model of ground diameter from 22cm to 40cm and DBH was D1. 3 = -1. 652+0. 913 D地, with precision 98. 7 %. Ground diameter and DBH also had a strong positive linear correla-tion. Regression model of the ground diameter and volume was V =0. 000 082D地2. 486 79 with precision 95. 2 %. The precision of the models built in this time was within permitted, which could be used in practice.关键词
杉木/胸径/地径/树高/材积/相关性Key words
Cunninghamia lanceolata/DBH/ground diameter/tree height/volume/correlation分类
农业科技引用本文复制引用
闭海秀,黄清经..桂东区杉木地径与胸径、树高、材积相关分析[J].广西林业科学,2014,(4):444-449,6.
