Research on the integrated stand model of pure Pinus massoniana forest
Author(s): LI Guizhen, GUO Wenqing, LIU Sha, Forestry Bureau of Huaihua City, Hunan Academy of Forestry, Forestry Department of Hunan Province
Pages: 22-26
Year: 2014 Issue: 4
Journal: Hunan Forestry Science & Technology
Keyword: integrated stand model; bootstrap method; Pinus massoniana;
Abstract: In the case of pure Pinus massoniana forest in Huitong County of Hunan Province,the pure Pinus massoniana forest’s integrated stand model is established on the basis of data of 166 pure Pinus massoniana forest retest plots.Integrated stand model is a group of nonlinear simultaneous equations,which is made of 8 nonlinear models.The method of nonlinear error-in-variable simultaneous equations is used to estimate model parameters with the statistical software Forstat,so the parameter estimation of the group of correlated equations is unbiased and the equations are compatible.Model validation using bootstrap method shows that both the average relative error and square error are less than 15percent.
Pages: 22-26
Year: 2014 Issue: 4
Journal: Hunan Forestry Science & Technology
Keyword: integrated stand model; bootstrap method; Pinus massoniana;
Abstract: In the case of pure Pinus massoniana forest in Huitong County of Hunan Province,the pure Pinus massoniana forest’s integrated stand model is established on the basis of data of 166 pure Pinus massoniana forest retest plots.Integrated stand model is a group of nonlinear simultaneous equations,which is made of 8 nonlinear models.The method of nonlinear error-in-variable simultaneous equations is used to estimate model parameters with the statistical software Forstat,so the parameter estimation of the group of correlated equations is unbiased and the equations are compatible.Model validation using bootstrap method shows that both the average relative error and square error are less than 15percent.
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