欢迎访问林业资源管理

林业资源管理 ›› 2012, Vol. 0 ›› Issue (2): 69-73.

• 科学技术 • 上一篇    下一篇

东北落叶松相容性立木材积和地上生物量方程研建

王为斌1, 党永峰2, 曾伟生2   

  1. 1.黑龙江省兴隆林业局,黑龙江 巴彦 151801;
    2.国家林业局调查规划设计院,北京 100714
  • 收稿日期:2012-02-04 修回日期:2012-02-16 出版日期:2012-04-28 发布日期:2020-11-27
  • 通讯作者: 曾伟生(1966-),男,湖南涟源人,教授级高工,博士,主要从事森林资源监测工作。Email:zengweisheng@sohu.com
  • 作者简介:王为斌(1966-),男,黑龙江巴彦人,高工,主要从事森林资源监测和保护工作。Email:xlwwb@sina.com

Compatible Tree Volume and Above-ground Biomass Equations for Larch(Larix spp.)in Northeastern China

WANG Weibin1, DANG Yongfeng2, ZENG Weisheng2   

  1. 1. Xinglong Forestry Bureau of Heilongjiang Province,Heilongjiang 151801,China;
    2. Academy of Forest Inventory and Planning,State Forestry Administration,Beijing 100714,China
  • Received:2012-02-04 Revised:2012-02-16 Online:2012-04-28 Published:2020-11-27

摘要: 以东北落叶松立木材积和地上生物量数据为例,通过改进模型的结构形式,采用误差变量联立方程组的方法,研究建立了相容的立木材积方程、地上生物量方程及生物量转换函数。结果表明:与常用的非线性模型相比,在材积方程和生物量方程中增加截距常数,能显著改进模型的拟合效果;建立的一元相容性方程,地上生物量和立木材积的预估误差均不超过5%;二元相容性方程,地上生物量的预估误差约为4%,立木材积的预估误差则小于3%。

关键词: 立木材积, 地上生物量, 误差变量联立方程组, 截距模型, 平均预估误差, 相容性

Abstract: Based on the tree volume and above-ground biomass data of larch(Larix spp.)in northeastern China,the compatible tree volume and above-ground biomass equations and biomass conversion functions were constructed by using the improved models and error-in-variable simultaneous equations in this paper.The results show that:(i)comparing with the commonly-used nonlinear equation without intercept,the volume and biomass nonlinear equations with intercept improve significantly the goodness-of-fit of the regressions;(ii)through the one variable-based compatible equations,the mean prediction errors(MPEs)of tree volume and above-ground biomass estimates are both less than 5%; and through the two variables-based compatible equations,the MPE of tree biomass estimates is about 4%,and the MPE of tree volume estimates is less than 3%.

Key words: tree volume, above-ground biomass, error-in-variable simultaneous equations, model without intercept, mean prediction error, compatibility

中图分类号: