广西马尾松人工林林分形高表研建  

Developing Stand Form-height Tables of Pinus massoniana Plantations in Guangxi

作　　者：徐庆玲 吴国欣 曾嵘 韦素秋 张先来 张伟 岑巨延 Xu Qinging;Wu Guoxin;Zeng Rong;Wei Suqiu;Zhang Xianai;Zhang Wei;Cen Juyan(Guangxi Forest Inventory&Planning Institute,Nanning,Guangxi 530011,China;Guangxi State-owned Gaofeng Forest Farm,Nanning,Guangxi 530001,China;Technology Innovation Center for Natural Resources Monitoring and Evaluation of Beibu Gulf Economic Zone,Ministry of Natural Resources,Nanning,Guangxi 530011,China)

机构地区：[1]广西壮族自治区林业勘测设计院,广西南宁530011 [2]广西壮族自治区国有高峰林场,广西南宁530001 [3]自然资源部北部湾经济区自然资源监测评价工程技术创新中心,广西南宁530011

出　　处：《广西林业科学》2023年第5期575-580,共6页Guangxi Forestry Science

基　　金：广西林业科研项目(桂林科研[2016]24号,桂林科研[2015]15号)。

摘　　要：为准确利用形高表测算马尾松(Pinus massoniana)林分蓄积量,以马尾松人工林为研究对象,基于326块样地林分平均胸径、平均树高与形高值的关系,分别拟合得到一元形高模型[FH=(0.4056+0.9659/H+2)×H]和二元形高模型(FH=0.6565×D^(1.064)×H^(-0.1771))。结果表明,在不同产区及不同胸径、树高分段五折交叉检验中,一元、二元形高模型检验结果均理想;其中,一元形高模型总相对误差和平均系统误差均在±3%范围内,平均百分标准误差均小于4%,预估精度达98%以上;二元形高模型总相对误差和平均系统误差均在±1%范围内,平均百分标准误差均小于2%,预估精度达99%以上。以一元形高模型和二元形高模型为基础,分别编制马尾松人工林林分一元形高表和二元形高表,可为准确计算广西马尾松人工林蓄积量和评价人工林质量提供参考。In order to accurately use form-height tables to calculate stand accumulation of Pinus massoniana,taking P.massoniana plantations as objects,based on relationships between average DBHs,average tree heights and form-height values of 326 sample plots,one-variable[FH=(0.4056+0.9659Hˉ+2)×Hˉ]and two-variable(FH=0.6565×Dˉ1.064×Hˉ-0.1771)form-height models were obtained.Results showed that in 5-fold cross-validations of different production areas and different segments of DBH and tree height,test results of one-variable and two-variable form-height models were ideal.Total relative errors and mean systematic errors of one-variable form-height model were within±3%range,mean percentage standard errors were less than 4%,and estimated accuracies were more than 98%.Total relative errors and mean systematic errors of two-variable form-height model were within±1%range,mean percentage standard errors were less than 2%,and estimated accuracies were more than 99%.Based on one-variable and two-variable form-height models,stand one-vari-able and two-variable form-height tables of P.massoniana plantations were compiled respectively,which could provide references for accurate calculations of accumulations and quality evaluations of P.massoniana planta-tions in Guangxi.

关 键 词：林分形高 林分蓄积量 评价指标 马尾松人工林 

分 类 号：S758.62[农业科学—森林经理学]