木材科学与技术2024，Vol.38Issue(3)：72-77,6.DOI:10.12326/j.2096-9694.2023111
木材气干密度与基本密度关系模型比较
Comparison of Correlation Models Between Wood Basic Density and Air-Dry Density
摘要
Abstract
Wood density includes basic density,air-dry density,etc.The air-dry density(D12)measured at the moisture content of 12%is more commonly used,so it is necessary to convert wood air-dry density to basic density(Db).Currently,the models that use air-dry density to calculate basic density,include Reyes,Chave,Simpson,and Vieilledent models.However,these models do not offer completely consistent predictions.This study used data of wood basic density and air-dry density from Research Institute of Wood Industry,Chinese Academy of Forestry(CRIWI)and French Agricultural Research Centre for International Development(CIRAD)to evaluate the prediction precision difference among the models mentioned above.Firstly,a correlation model-between D12 and Db was established based on CRIWI wood density database.Then,the air-dry density at 12%moisture content of individual wood species from the CRIWI and the CIRAD wood density database was applied to the Reyes model,Chave model,Simpson model,Vieilledent model,and the newly fitted model respectively to predict basic densities of each wood species.Then the mean absolute value of the error(MAE)was calculated from the predicted and the measured value of the wood basic density.By comparing the MAE of different models,the results indicate that only the Reyes model can appropriately predict basic density corresponding to either the CRIWI or CIRAD wood density databases.For both the Simpson model and the newly fitted model,the accuracy in predicting basic density significantly decreases when the air-dry density at 12%moisture content exceeds 1.0 g/cm3.关键词
木材基本密度/木材气干密度/关系模型/含水率Key words
wood basic density/wood air-dry density/correlation model/moisture content分类
农业科技引用本文复制引用
虞华强,李晓玲,安鑫,段新芳..木材气干密度与基本密度关系模型比较[J].木材科学与技术,2024,38(3):72-77,6.基金项目
中央级公益性科研院所基本科研业务费专项资金"林草领域双碳国际标准比对分析与国际标准提案研究"(CAFYBB2022MC002) （CAFYBB2022MC002）
中央级公益性科研院所基本科研业务费专项资金"《木材物理力学性质试验方法》国家标准修订研究"(CAFYBB2018MB001). （CAFYBB2018MB001）
