自然资源学报 ›› 2018, Vol. 33 ›› Issue (8): 1390-1402.doi: 10.31497/zrzyxb.20170684

• 资源生态 • 上一篇    下一篇

三个主要树种单木生物量及其器官分配模型

王冬至1a,2, 张冬燕1a,1b, 蒋凤玲1a, 许中旗1a, 张志东1a,2, 黄选瑞1a,2,*   

  1. 1. 河北农业大学a. 林学院,b. 商学院,河北 保定 071000;
    2. 河北省林木种植资源创新与保护实验室,河北 保定 071000
  • 收稿日期:2017-07-10 修回日期:2017-09-25 出版日期:2018-08-20 发布日期:2018-08-20
  • 通讯作者: 黄选瑞(1962- ),男,博士,教授,研究方向为森林资源可持续经营与管理。E-mail: hxr1962@163.com
  • 作者简介:王冬至(1984- ),男,河北景县人,博士,讲师,研究方向为森林资源可持续经营与管理。E-mail: wangdz@126.com
  • 基金资助:
    国家重点研发计划(2017YFD0600403);林业公益性行业科研专项(20150430304);河北省教育厅资助科研项目(QN2018125);国家科技支撑项目(2015BAD09B01);国家重点研发计划(2016YFD060020303)

Models for Estimating Biomass and Its Distribution in Organs of Three Main Tree Species

WANG Dong-zhi1a,2, ZHANG Dong-yan1a,1b, JIANG Feng-ling1a, XU Zhong-qi1a, ZHANG Zhi-dong1a,2, HUANG Xuan-rui1a,2   

  1. 1. a. College of Forestry, b. College of Business. Agricultural University of Hebei, Baoding 071000, China;
    2. Forest Resources Innovation and Protection Laboratory of Hebei, Baoding 071000, China
  • Received:2017-07-10 Revised:2017-09-25 Online:2018-08-20 Published:2018-08-20
  • Supported by:
    National Key Research and Development Plan, No. 2017YFD0600403;Forestry Public Welfare Industry Research Project, No. 20150430304;Hebei Education Department Funding Research Project, No. QN2018125;Science and Technology Support Project of China, No. 2015BAD09B01;National Key Research and Development Plan, No. 2016YFD060020303

摘要: 目前已有不同方法构建生物量相容性模型,但基于非线性似乎不相关回归估计法实现不同树种生物量模型相容性及各器官生物量分配模型的研究较少。因此,论文以塞罕坝华北落叶松、油松、白桦3种林分为对象,基于非线性似乎不相关回归估计法和广义多项Logit模型,建立了包含哑变量的非线性可加生物量模型及各器官生物量分配模型。结果表明:不同树种树干生物量模型确定系数均大于0.90,树枝、树叶、树根生物量模型确定系数在0.77~0.93范围内,各器官生物量均方根误差和绝对误差分别在2.68~17.19 kg/株和0.83~1.39 kg/株范围内,经过检验不同树种各器官生物量模型均能满足精度需求。不同树种广义多项Logit分配模型,通过似然比检验、比分检验和Wald检验均达到显著水平(P<0.001),各器官参数均表现为显著水平(P<0.05)。不同树种树干、树枝、树叶及树根生物量比例分别在0.76~0.87、0.07~0.11、0.02~0.07、0.04~0.07范围内。包含哑变量的非线性似乎不相关生物量模型及广义多项Logit各器官分配模型,实现了生物量模型在不同树种间的通用性,并对森林生物量器官分配格局研究提供了科学参考。

关键词: 多项Logit模型, 林分类型, 生物量, 似乎不相关回归, 哑变量

Abstract: At present, there are different methods to construct compatible models of biomass. However, there are few reports on the compatibility of models for different tree species and the allocation model of component-specific biomass based on the nonlinear seemingly unrelated regression method. In this paper, the research objects were Larix principis-rupprechtii, Pinus tabuliformis and Betula platyphylla forests in Saihanba National Forest Farm, Hebei Province, China. Based on the nonlinear seemingly unrelated method and the generalized multinomial Logit model, the nonlinear additive models of biomass with dummy variables and allocation models of biomass in organs were established. The results showed that the discriminant coefficients (R2) of stem biomass models for different tree species were all higher than 0.90, and the root mean square errors (RMSE) and absolute errors were in the range of 16.68-17.19 and 0.84-1.07; in the biomass models of branch, leaf and root, the discriminant coefficients (R2) were in the range of 0.77-0.93, and the root mean square errors (RMSE) and absolute errors were in the range of 2.58-12.18 and 0.83-1.39. After inspection, the biomass models of different tree species can meet the precision requirement. The generalized multinomial Logit allocation models of different species all reached a significant level (P< 0.001) after Likelihood ratio test, Score test and Wald test. The parameters of each organ were significant (P < 0.05). The proportions of biomass in trunks, branches, leaves and roots of different tree species were in the range of 0.76-0.87, 0.07-0.11, 0.02-0.07 and 0.04-0.07, respectively. The models of nonlinear seemingly unrelated regression with dummy variables and the generalized multinomial Logit model of biomass allocation in organs can be used universally among different tree species and provide scientific basis for the study of forest biomass allocation pattern.

Key words: biomass, dummy variable, forest type, multinomial Logit model, seemingly unrelated regression

中图分类号: 

  • S718.5