中国科学院大学学报2024，Vol.41Issue(3)：321-333,13.DOI:10.7523/j.ucas.2022.074
福建桉树异速生长方程与生物量估算
Allometric equation and biomass estimation of Eucalyptus in Fujian
摘要
Abstract
The estimation of forest biomass at individual tree scale is the basis for the estimation of forest biomass at the regional scale.This paper aims at developing a reliable and effective allometric equation for Eucalyptus in Fujian in order to improve the estimation accuracy of Eucalyptus biomass in this area and to provide basic supporting data for the sustainable forestry development of Eucalyptus.This study takes Eucalyptus,a major fast-growing and productive tree species in Southern China,as the research object.Using 90 Eucalyptus woods harvested in the field,the partitioning of Eucalyptus biomass among organs are studied,the optimal allometric equations are constructed,and the Eucalyptus root/shoot ratios are calculated and applied to estimate Eucalyptus root biomass.Results show Eucalyptus has the following biomass allocation strategies:the biomass proportion of trunks increases with increasing stand age,while that of branches,leaves,and roots decreases.The most feasible and effective way to estimate Eucalyptus root biomass is to use root/shoot ratio data with stand age.In the construction of the allometric equation for Eucalyptus biomass,the multiplicative power equation is better than the linear equation,and the optimal independent variable varied by organ type.This paper provides data and theoretical support for the accurate estimation of Eucalyptus plantation biomass,and has implications for species growth patterns,survival strategies,and even forest ecological management.关键词
桉树/单木生物量/器官分配/根冠比/异速生长方程Key words
Eucalyptus/individual tree biomass/organ partitioning/root/shoot ratio/allometric equations分类
农业科技引用本文复制引用
郑小曼,翁闲,欧玲珑,任引..福建桉树异速生长方程与生物量估算[J].中国科学院大学学报,2024,41(3):321-333,13.基金项目
国家自然科学基金(31670645,31972951)和福建省科学技术厅项目(2021I0041,2021T3058)资助 （31670645,31972951）
