生物量模型方差非齐性研究

胥辉

doi:10.11929/j.issn.2095-1914.1999.02.001

胥辉. 生物量模型方差非齐性研究[J]. 西南林业大学学报, 1999, 19(2): 73-77. DOI: 10.11929/j.issn.2095-1914.1999.02.001

引用本文:

胥辉. 生物量模型方差非齐性研究[J]. 西南林业大学学报, 1999, 19(2): 73-77. DOI: 10.11929/j.issn.2095-1914.1999.02.001

A Study on the Heterosceasticity in Tree Biomass Model[J]. Journal of Southwest Forestry University, 1999, 19(2): 73-77. DOI: 10.11929/j.issn.2095-1914.1999.02.001

Citation:

A Study on the Heterosceasticity in Tree Biomass Model[J]. Journal of Southwest Forestry University, 1999, 19(2): 73-77. DOI: 10.11929/j.issn.2095-1914.1999.02.001

生物量模型方差非齐性研究

胥辉

A Study on the Heterosceasticity in Tree Biomass Model

摘要

摘要: 以长白落叶松(Larix olgensis)为实例,验证树木生物量模型中存在方差非齐性,并提出以模型自身作为权函数来消除方差非齐性的参数估计方法.

Abstract: Validation on Larix olgensis showed that the error of tree biomass model is heteroscedastic. Thus, a parameter estimate method where the heteroscedasticity is overcome by the model itself as weight function was proposed.

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