摘要
以湖南省青羊湖国有林场青冈栎阔叶混交林和青冈栎针叶混交林2种林分类型的24株青冈栎解析木数据为基础,采用2种常用的模型(w=aD ^(b),w=a(D ^(2)H)^(b))拟合2种林分类型的青冈栎各器官生物量估测模型,并对2种常用模型的预测效果进行方差分析对比,构建不同林分类型下的青冈栎各器官生物量估测模型。结果表明,树叶生物量模型以胸径(D)为单一自变量为宜,树枝和树叶生物量模型以胸径(D)和树高(H)双自变量为宜;不同林分类型下,青冈栎的树叶、树枝生物量模型在0.05水平上存在显著差异,说明区分林分类型构建树叶、树枝生物量模型是必要的。本研究区分林分类型构建的青冈栎各器官生物量模型,模型结构简单,实用性强,可以为青冈栎的生物量估测提高参考。
Based on 24 analytic trees of Cyclobalanopsis glauca in Qingyanghu National Forest Farm in Hunan Province,two stand types of Cyclobalanopsis glauca oak broad-leaved and coniferous mixed forest were distinguished.Two models(w=aD ^(b),w=a(D ^(2)H)^(b))were used to fit the biomass model of various organs of Cyclobalanopsis glauca for two stand types.After comparing the prediction effects of the two models using analysis of variance,the estimation model of organ biomass of Cyclobalanopsis glauca under different stand types was constructed.The results showed that the single independent variable of DBH was suitable for leaf biomass model,and the double independent variables of DBH and height H were suitable for branch and leaf biomass model.The leaf and branch biomass of Cyclobalanopsis glauca showed significant differences at the level of 0.05 under different stand types,it indicated that it is necessary to distinguish stand types to construct leaf and branch biomass model.In this study,the organ biomass model of Cyclobalanopsis glauca has the advantages of simple structure and strong practicability,it can be a reference for the biomass estimation of Cyclobalanopsis glauca.
作者
林伟军
LIN Weijun(Lingnan Integrated Exploration and Design Institute of Guangdong Province,Guangzhou 510500,Guangdong,China)
出处
《福建林业科技》
2021年第3期68-72,共5页
Journal of Fujian Forestry Science and Technology
基金
国家林业公益性行业科研专项(201504301)。
关键词
青冈栎
林分类型
生物量模型
Cyclobalanopsis glauca
stand type
biomass model
作者简介
林伟军(1985-),男,广东省岭南综合勘察设计院工程师,从事森林保护与森林生态研究。E-mail:53622916@qq.com。
