摘要
以广西速生丰产桉树人工林776块样地数据为基础,运用现代建模思想和方法,优选模型结构,研究建立了速生丰产桉树人工林相对树高曲线模型.经检验,桉树人工林合并树种建模和分树种建模的效果同样十分理想,模型用于林分蓄积估计的总相对误差和平均相对误差均在±1%以内,远小于规定的±3%;预估精度达98.5%以上,大于规定的97%;满足林业数表建模要求.
Based on the data collected from 776 sample plots of Eucalyptus plantations in Guangxi, the curve models of relative tree height for Eucalyptus plantations are established by applying some modern theory of modeling. The result of goodness test of the models shows that the quality of the models, established by differentiated 2 species groups of Eucalyptus or incorporated with the species of Eucalyptux, is almost great because the total relative errors and the mean relative errors for forest stand volume estimation are only, between ±1%, far less than the permission of ±3 %, and the precision of tbe estimation is t：p to 98. 5%, much more than the permission of 97%.
出处
《中南林业科技大学学报》
CAS
CSCD
北大核心
2007年第4期23-27,共5页
Journal of Central South University of Forestry & Technology
基金
广西"十五"林业科技攻关项目(2002-54)
关键词
森林经理
桉树人工林
相对树高曲线模型
立木材积估计
forest managment
Eucalyptus plantations
curve model of relative tree height
tree volume estimation
