千岛湖地区天然马尾松林高产结构模式的探讨  

On High-yielding Constitution Model for Natural Masson Pine Stands in Qiandao Lake's Region

作　　者：韦新良[1] 

机构地区：[1]浙江林学院

出　　处：《浙江农林大学学报》1989年第2期103-108,共6页Journal of Zhejiang A&F University

摘　　要：应用数量化方法Ⅰ,研究了千岛湖天然马尾松林的林分结构因子和林分蓄积量之间的定量关系,得到以下结论:在林分蓄积量中,林分每公顷林木株数的作用占主导地位,相对得分为55.04;其次是林分平均直径。20～30年生天然马尾松林的高产结构最佳模式是:林分密度1650～1950株/hm^2,平均胸径22～26cm,郁闭度0.8以上的林分,其蓄积量的估计值为222.16m^2/hm^2。本文还给出了天然马尾松林蓄积量的估计模型。A quantitative analysis was made between the constitution elements of natural masson pine stands in Qiandao Lake's region and stand timber volume using the quantification procedure method I. The results showed that the contribution of tree number per ha was very significant to stand volume (its relative scores was accounted 55.04) while that of mean stand diameter was the next. The optimum high-yielding constitution model for 20～30-year-old natural pine stands was formulated by: stand density 1 650～ 1 950 trees per ha, mean diameter 22～26 cm and over 0.8 of crown closure. The estimated stand volume per ha was 222.16m3 based on our model. A model estimating the timber volume per ha for natural pine stand was also reported.

关 键 词：林分 蓄积量 得分值 高产结构模式 

分 类 号：S7[农业科学—林学]