Construction of a Binary Standing Tree Volume Table for Pinus massoniana in Guangxi
The construction of a binary standing tree volume table for Pinus massoniana provides a theoretical basis for accurately measuring forest stock volume in Guangxi.This study collected data from 712 sample trees across three production areas(Class I,II,and III)of P.massoniana in Guangxi.Four commonly used models were selected to construct binary volume models for P.massoniana.Through a comprehensive comparison of total relative error(TRE),mean percent standard error(MPSE),average systematic error(ASE),forecast accuracy(P),and parameter variation coefficients,the Yamamoto fixed-parameter model,V=0.000 076 45×D1.758 591 82×H1.008 345 76,was determined to be the optimal binary volume model.The model was then subjected to validation by production areas,diameter,height segments,and independent sample testing.Results showed that this model demonstrated high fitting quality and excellent predictive performance,meeting the accuracy requirements for constructing binary volume models.It can be widely applied in forest resource surveys,forestry judicial appraisal,and operation surveys and designs for P.massoniana forests in Guangxi.
Pinus massonianbinary standing tree volumeevaluation criteria
NETL
NSTL
万方数据
