立木生物量线性联立模型研究  

Study on linear simultaneous model of tree biomass.

作　　者：贺东北[1] 骆期邦[1] 曾伟生[1] 

机构地区：[1]国家林业局中南林业调查规划设计院

出　　处：《浙江林学院学报》1998年第3期298-303,共6页Journal of Zhejiang Forestry College

摘　　要：根据当今区域性森林生物量资源清查和监测的需要，针对以往生物量模型存在总量与各维量互不兼容和与森林蓄积量清查不兼容等实际问题，并以提高模型的估计精度和适用性为目标，通过引进材积变量、线性联立方程组的建模原理和二段加权最小二乘拟合方法，建立了马尾松超总体立木生物量线性联立方程模型，解决了２个不兼容的实际问题，并使模型的预估精度和适用性相对于以往生物量模型有明显提高。Biomass is one of the important items for todays regional forest resources inventory and monitoring,but the current biomass models have two big problems,that is,biomass estimator is not compatible with volume estimator,and total biomass estimators is not compatible with stem,branch,leaf biomass estimators.A new super population tree biomass model for Pinus massoniana was presented based on linear simultaneous equation system and 2 stage weighting least squares.The model could solve the two problems above and have higher precision and better applicability than the currently used biomass models.

关 键 词：马尾松 生物量 线性方程 

分 类 号：S718.556[农业科学—林学] S791.248