摘要
在广西速丰桉6个区域设置276块标准地,按径阶采集539株样木,选取山本式固定参数模型和山本式可变参数模型分别构建速丰桉二元材积模型,通过比较参数变动系数并综合修正决定系数、总相对误差、平均系统误差、平均百分标准误差及预估精度等指标,确定V=0.00004354×D^(1.71874)×H^(1.19727)为最佳的二元材积模型。同时,对模型进行不同树种、区域、胸径、树高分段及独立样本检验,结果表明,模型各项精度均达到编制二元材积模型的精度要求,可广泛应用于广西速丰桉伐区设计调查和其他生产经营活动。
In this study,276 standard plots were set up in 6 areas of fast-growing and high-yield Eucalyptus forest in Guangxi,and 539 sample trees were collected by diameter class.The Yamamoto-Kazuhide models with fixed and variable parameters were used to construct the binary volume model.By comparing the parameter variation coefficient and integrating correction coefficients such as determination coefficient,total relative error,mean systematic error,mean percentage standard error,and estimation accuracy,the best binary volume model was V=0.00004354×D^(1.71874)×H^(1.19727).The model was tested by species,different regions,different diameter classes,tree height classes,and independent sample tests.The results showed that the accuracy of the model met the requirements for developing binary volume models and could be widely applied to the design and investigation of logging areas and other production and management activities in fast-growing and high-yield Eucalyptus forests in Guangxi.
作者
徐庆玲
郭道峰
韦秋生
黎庆华
罗霸
莫焕雄
覃孙慧
XU Qingling;GUO Daofeng;WEI Qiusheng;LI Qinghua;LUO Ba;MO Huanxiong;QIN Sunhui(Guangxi Forest Survey and Design Institute,Nanning 530011,China;Natural Resources Bureau of Liujiang District,Liuzhou,Guangxi 545100,China;Forestry Bureau of Changzhou District,Wuzhou,Guangxi 543003,China;Forestry Bureau of Luzhai County,Liuzhou,Guangxi 545600,China)
出处
《林业调查规划》
2024年第4期1-6,153,共7页
Forest Inventory and Planning
基金
广西林业科研项目(桂林科研〔2016〕31号,桂林科研〔2016〕24号,桂林科研〔2015〕15号).
关键词
速丰桉
二元材积模型
山本式固定参数模型
独立样本检验
胸高形数
fast-growing and high-yield Eucalyptus
binary volume model
Yamamoto-Kazuhide model with fixed parameters
independent sample testing
breast-height form factor
