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马尾松立木干曲线方程研究
吴文友,黄庆丰,郭莉
0
(安徽农业大学林学与园林学院,合肥 230036)
摘要:
利用25株马尾松解析木的相关资料建立马尾松立木干曲线方程并对各方程进行了分析评价。结果表明: 4次多项式比3次多项式更适宜作为干曲线方程,其模拟树干基部形状较好,且在计算树干材积时有更高的精度;马尾松立木胸高形数为0.499。研究结果可以为马尾松经营数表的修订或更新提供理论依据。
关键词:  马尾松  干曲线方程  4次多项式  模型评价  近似求积式
DOI:CNKI:34-1162/S.20111025.1030.026
投稿时间:2011-01-24
基金项目:国家自然科学基金项目(31070569)资助。
Stem curve equations for Pinus massoniana standing trees
WU Wen-you,HUANG Qing-feng,GUO Li
(School of Forestry and Landscape Architecture, Anhui Agricultural University, Hefei 230036)
Abstract:
This article is based on data analysis of twenty-five Pinus massoniana of stem part, to establish Pinus massoniana standing trees stem curve equations and evaluate them. The results indicate that quartic polynomial as stem curve equation is more suitable than cubic polynomial in simulating stem base shape, and calculating stem volume; the breast-height form factor of Pinus massoniana is 0.499. The research results could offer theoretical basis for revising and updating management numerical tables of pinus massoniana.
Key words:  Pinus massoniana  stem curve equation  quartic polynomial  model evaluation  formula for volume approximation

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