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当前位置: 首页 > 文章 > 不同估算树冠生物量方法的比较——以长白落叶松林为例 林业资源管理 2010 (5) 43-49
Position: Home > Articles > Study on Different Methods of Estimating Crown Biomass——take Larix olgensis forest as an example Forest Resources Management 2010 (5) 43-49

不同估算树冠生物量方法的比较——以长白落叶松林为例

作  者：
郭孝玉;孙玉军;刘凤娇
单  位：
北京林业大学省部共建森林培育与保护教育部重点实验室
关键词：
生物量;异速生长;长白落叶松;枝条;树冠
摘  要：
以长白落叶松人工林为研究对象,应用平均标准木法及枝解析木法调查树冠生物量,并采用标准枝法与枝条模型估算法对估测的树冠生物量进行了比较研究。分析了枝长与枝基径,枝条生物量与枝基径、枝长等各因子的相关关系,建立一级枝长模型及枝条生物量模型。通过对枝条生物量估测模型的比较,结果表明:枝基径与枝条生物量、叶生物量有很高的相关性,幂函数拟合的精度较高,参数估计较稳定;虽然二次多项式模型拟合的相关系数较大,但因参数变动较大,预测不稳定。在树冠生物量模型研究中,基于胸径建立异速生物量模型,相关系数R2值达0.906以上;通过对估测树冠生物量模型的比较,枝条模型估测法优于标准枝法,同时对模型进行F检验,F值达极显著水平,所选枝条生物量模型对长白落叶松树冠生物量的估测具一定参考价值。
译  名：
Study on Different Methods of Estimating Crown Biomass——take Larix olgensis forest as an example
作  者：
GUO Xiaoyu;SUN Yujun;LIU Fengjiao(The Key Lab.for Silviculture and Forest Conservation of Ministry of Education,Beijing Forestry University,100083,P.R.China)
关键词：
biomass,allometry,Larix olgensis Henry,branches,crown
摘  要：
Based on average sample tree determination and branch analysis method,the mean branch method and single branch biomass model were used to estimate the crown leaf biomass,branch biomass of Larix olgensis forest in Dongzhelenghe station.Analysis was made on the relationships between single branch base diameter and branch length,between single branch biomass and branch base diameter,branch length and the related factors,establish branch length model and branch biomass model respectively.By comparing the different estimating model of branch biomass,the results show that the branch base diameter was highly correlated to branch biomass and branch leaf biomass,the power function is fitting best,the accuracy is higher and the estimating parameters are more stable although the coefficients of quadratic function are larger,which causes larger fluctuation of parameters and unstable prediction.In this study,based on diameter at breast height,different allometric equations of the crown biomass are established and the coefficient(R2) of crown biomass model are more than 0.906.Through the comparison of method of estimating crown biomass,the results show that branch biomass model method is better than mean branch method,and F test is used for test of models,the F values are at a significant level.The branch biomass models for estimating Larix olgensis crown biomass are of certain reference value.

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