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### 四川长宁楠竹(Phyllostachys Pubescens)竹干形状规律及材积测定公式的初步研究

1. 四川农学院林学系
• 收稿日期:1984-08-07 出版日期:1984-06-30

### A PRELIMINARY STUDY ON STEM FORMS OF PHYLLOSLACHYS PUBESCEN AND MEASUREMENT FORMULAS FOR ITS CULM VOLUME

Yang Zhenghua

1. Sichuan Agricultural College, Ya'an, Sichuan, China
• Received:1984-08-07 Online:1984-06-30

Abstract: To estimate the bamboo resources accurately by culm volume the characteristics of stems have been studied. The distribution of form quotient at different diameters tends to approach the normal one. The relationship between diameter height and form quotient, between breast height diameter and form faetoor and betweendiameter and form height was studied. As a conclusion eight formulas for the moasurement of the stem have been worked out and divided into four types with a stan dard error less than 5% in accuracy. The coefficient of actual volume has bee-n found to decrease as the diameter increases.

Key words: BAMBOO, DETERMINATION, FORMULA