[1]回厚霖,张鹏,黄荣浩,等. 混合模型在福建省粗叶榕生物量模型中的应用[J].西北林学院学报,2017,32(5):91-97.[doi:10.3969/j.issn.1001-7461.2017.05.16]
　HUI Hou-lin,ZHANG Peng,HUANG Rong-hao,et al. Application of the Mixed-Effect Models in Shrub Biomass Model[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2017,32(5):91-97.[doi:10.3969/j.issn.1001-7461.2017.05.16]
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 混合模型在福建省粗叶榕生物量模型中的应用()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第32卷
期数:
2017年第5期
页码:
91-97
栏目:
出版日期:
2017-09-30

文章信息/Info

Title:
 Application of the Mixed-Effect Models in Shrub Biomass Model
文章编号:
1001-7461(2017)05-0091-07
作者:
 回厚霖1; 张鹏2; 黄荣浩3; 季鹤3; 蒋瑾彧4; 王新杰1*
 （1.北京林业大学 省部共建森林培育与保护教育部重点实验室，北京 100083；2.北京林业大学 实验林场，北京 100083；3.北京林业大学 信息学院，北京 100083；4.四川省攀枝花市仁和区武警森林支队，四川 攀枝花 617000）
Author(s):
 HUI Hou-lin1; ZHANG Peng2; HUANG Rong-hao3; JI He3; JIANG Jin-yu4; WANG Xin-jie1*
 (1.Key Lab.for Silviculture and Conservation Joint-constructed by Province and Ministry of Education,Beijing Forestry University,Beijing 100083,China；2.Experimental Forest Farm,Beijing Forestry University,Beijing 100083,China; 3.School of Information,Beijing Forestry University,Beijing 100083,China; 4.Forest Armed Police Detachment in Sichuan,Panzhihua,Sichuan 617000,China)
关键词:
 ; 灌木生物量; 混合模型; 异方差结构; 粗叶榕
Keywords:
 ; shrub biomass;  mixed-effects model;  heteroscedasticity;  Ficus simplicissima
分类号:
S711
DOI:
10.3969/j.issn.1001-7461.2017.05.16
文献标志码:
A
摘要:
 为建立粗叶榕灌木生物量的混合模型，精确估算灌木生物量，以福建省将乐县4种林分类型（杉木纯林、杉木马尾松混交林、马尾松纯林、毛竹林）的114组粗叶榕灌木生物量数据为基础，以粗叶榕各部分生物量（地上、地下、总生物量）为因变量，以地径、株高、冠幅等为自变量，从6种常用的灌木生物量模型中选择拟合精度最高的线性及非线性模型作为基础模型。以林分类型为随机效应，采用混合效应模型方法，建立粗叶榕的线性及非线性混合模型。利用幂函数、指数函数、常数加幂函数3种结构消除数据异方差对模型精度的影响。采用AIC、BIC和负2倍的对数似然值对模型进行精度比较，并用绝对平均误差、均方根误差和调整后的决定系数对模型进行检验。结果表明，考虑冠幅建立的非线性生物量模型拟合精度较高；以幂函数作为异方差结构建立的非线性混合模型在精度上有显著提高，检验数据显示地上、地下、总生物量模型的决定系数分别提高12.17%、21.01%、20.24%。利用混合模型，并考虑异方差结构建立的灌木生物量模型可以精确地预估粗叶榕的生物量。
Abstract:
 The objective of this study was to establish the biomass mixed-effect models for Ficus simplicissima and to estimate shrub biomass accurately.Models with the highest fitting precision were selected as basic ones from six traditional models.Biomass of different parts (aboveground,underground and total biomass) were taken as dependent variables,and ground diameter,plant height,crown width were independent variables.The data were extracted from 114 groups of F.simplicissima shrubs in four types of forests (pure Chinese fir,forest of Pinus massoniana and Cunningghamia lanceolata,pure Pinus massoniana,pure Phyllostachys pubescens) occurring in Sanming,Fujian Province,China.The linear and nonlinear mixed-effect models were used to establish the F.simplicissima biomass models with the forest types as random-effect.Meanwhile,the power function,exponential function or the constant plus power function were introduced,respectively to remove the heteroscedasticity of the data.AIC,BIC and negative double logarithmic likelihood value were calculated to make the model accuracy comparison.The absolute average error,root mean square error and adjusted coefficient of determination were used to test the model.The results showed that the nonlinear biomass model with crown had the higher fitting precision than the linear model.Compared to the basic model,the precision of the nonlinear mixed-effect (NLME) model had improved significantly.Validation data showed the coefficients of determination of the ground biomass NLME model,underground biomass NLME mode and total biomass NLME model were improved by 12.17%,21.01%,and 20.24%,respectively compared to the basic nonlinear models,which could estimate the shrub biomass accurately.The shrub biomass mixed-effect models,considering heteroscedasticity structure could predict the F.simplicissima biomass accurately.

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备注/Memo

备注/Memo:
 收稿日期：2016-11-30修回日期：2017-03-02
作者简介：回厚霖，男，在读硕士，研究方向：森林可持续经营及森林多功能。E-mail：perrylin@foxmail.com
*通信作者：王新杰，男，副教授，研究方向：森林可持续经营及森林多功能。E-mail：xinjiew@bjfu.edu.cn
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