广西桉树人工林二元立木材积动态模型研究  

Study on Two-Way Tree Volume Dynamic Model of Eucalyptus Plantations in Guangxi

作　　者：岑巨延 

机构地区：[1]广西林业勘测设计院,广西南宁530011

出　　处：《华南农业大学学报》2007年第1期91-95,共5页Journal of South China Agricultural University

基　　金：广西"十五"林业科技攻关项目(2002-54)

摘　　要：以广西速生丰产桉树人工林156块样地的305株伐倒木数据为基础,运用现代建模思想和方法,优化模型结构,研究建立了速生丰产桉树人工林二元立木材积动态模型.经模型自检,总相对误差为-0.2%,平均相对误差为-0.26%,预估精度达98.7%;适用性检验,立木材积估计的总相对误差、平均相对误差均在±1%以内,远小于规定的±3%,满足林业数表建模要求.Based on the data of 305 sample trees in 156 standard plots of Eucalyptus plantations in Guangxi, the two-way tree volume dynamic model for Eucalyptus plantations was established by applying modem modeling theory. The result of self-test of the model shows that the total relative error is -0. 2%, and the mean relative error is -0. 262% ,and the precision of estimates is up to 98.7%. The result of applicability test shows that the total relative error and the mean relative error are between ± 1%, far less than the permission of ±3%.

关 键 词：桉树人工林 立木材积 动态模型 

分 类 号：S792.39[农业科学—林木遗传育种]