Integrated Stand Growth Model of Mongolian Oak and It’s Application

HONG Ling-xia; LEI Xiang-dong; LI Yong-ci

This paper established an integrated stand growth model of Mongolian oak (ISGM_oak) using the data from 61 permanent sample plots measured in 1997 and 2007. ISGM_ oak is a group of nonlinear simultaneous equations. The method of nonlinear error-in-variable simultaneous equations is used to estimate the parameters of ISGM_ oak with the statistical software Forstat 2.0, so the parameter estimation of the group of correlated equations in ISGM_oak is unbiased and the equations are compatible. Model validation using bootstrap method showed that both the average relative error and square error are less than 15 percent. The ISGM_ oak model can be used to simulate the stand growth with different values of site index, stand density and to draw stand density management diagram for decision making.

1. Research Institute of Forest Resource Information Techniques, Chinese Academy of Forestry, Beijing 100091, China

2. Beijing Forestry University, Beijing 100083, China

Received Date: 2011-04-26

Available Online: 2012-04-13

Abstract: This paper established an integrated stand growth model of Mongolian oak (ISGM_oak) using the data from 61 permanent sample plots measured in 1997 and 2007. ISGM_ oak is a group of nonlinear simultaneous equations. The method of nonlinear error-in-variable simultaneous equations is used to estimate the parameters of ISGM_ oak with the statistical software Forstat 2.0, so the parameter estimation of the group of correlated equations in ISGM_oak is unbiased and the equations are compatible. Model validation using bootstrap method showed that both the average relative error and square error are less than 15 percent. The ISGM_ oak model can be used to simulate the stand growth with different values of site index, stand density and to draw stand density management diagram for decision making.

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Reference (21)

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Integrated Stand Growth Model of Mongolian Oak and It’s Application

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