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。
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 poly-nomial as stem curve equation is more suitable than cubic polynomial in simulating stem base shape,and calcu-lating 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.
出处
《安徽农业大学学报》
CAS
CSCD
北大核心
2011年第6期854-857,共4页
Journal of Anhui Agricultural University
基金
国家自然科学基金项目(31070569)资助
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
Pinus massoniana
stem curve equation
quartic polynomial
model evaluation
formula for volume approximation
