Study on Consociation Equation Set Model Method to Establish Duality\n Standing Tree Volume Model

Taking Larix gmelini as an example,the consociation equation set model method was used in creating duality standing tree volume model, the variance of constructing model and estimation precondition could be effectively solved to duality standing tree volume model. The usual nonlinear estimation and two steps estimations method were used to estimate the consociation equation set model method of duality standing tree volume model. As a result, the model could be estimated by two methods; two steps estimation method could reduce system error, and attain error limit than universal model, two steps estimation method was better than usual nonlinear estimation.

Abstract: Taking Larix gmelini as an example,the consociation equation set model method was used in creating duality standing tree volume model, the variance of constructing model and estimation precondition could be effectively solved to duality standing tree volume model. The usual nonlinear estimation and two steps estimations method were used to estimate the consociation equation set model method of duality standing tree volume model. As a result, the model could be estimated by two methods; two steps estimation method could reduce system error, and attain error limit than universal model, two steps estimation method was better than usual nonlinear estimation.

HTML

Reference (15)

[1]	骆期邦.立木材积表编制和应用中存在的一些理论和方法问题探讨[J].中南林业调查规划,1985(1):3-6
[2]	曾伟生.论一元立木材积模型的研建方法[J].林业资源管理,2004,1(2):21-23
[3]	宋永俊.思茅松人工林二元材积模型的编制[J].云南林业调查规划设计,1998,23(4):13-18
[4]	张向忠.樟子松二元材积模型的研究[J].河北林学院学报,1995,12(4):335-337
[5]	余光辉,刘恩斌,叶金盛,等.非线性立木材积模型参数辨识的改进算法及其应用[J].南京林业大学学报:自然科学版,2004,5(3):1-4
[6]	唐守正.FORSTAT2.0统计之林教程[M].北京:2002:136-187
[7]	张向忠,倪志云,张瑞文,等.落叶松人工林二元材积模型的研究[J].河北农业大学学报,1996,1(1):100-101
[8]	陈东来,秦淑英.山杨二元材积模型的研究[J].河北林学院学报,1994,12(4):347-349
[9]	叶金盛. 广东省湿地松二元立木材积模型的编制[J]. 广东林业科技,2006,22(2):27-30
[10]	胥辉,全宏波,王斌.思茅松标准树高曲线的研究[J]. 西南林学院学报,2000,6(2):74-77
[11]	宁辉.非线性二元材积模型的参数估计方法[J]. 中南林业调查规划,2000,19(1):1-4
[12]	Zellner A. An efficient method of estimating seemingly unrelated regressions and tests for aggregation bias[J]. Journal of the American Statistical Association, 1962,57:348-368
[13]	Rao C R. Least Squares Theory Using An Estimated Dispersion Matrix and Its Application to Measurement of Signals . Proceedings of the Fifth Berkeley Symposium on Math Statist & Prob Eds by Lecam.J and Neyman, 1967,1:355-372
[14]	吴贤毅,王筑娟.SUR回归模型中最小二乘估计与Gauss-Markof估计及两步估计重合的条件[J].贵州工业大学学报,1998,27(2):9-14
[15]	骆期邦,曾伟生,贺东北.林业数表模型理论、方法与实践[M]. 长沙:湖南科学技术出版社,2001

Study on Consociation Equation Set Model Method to Establish Duality\n Standing Tree Volume Model

Abstract

References

Proportional views

通讯作者: 陈斌, bchen63@163.com

Proportional views