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FOREST RESOURCES WANAGEMENT ›› 2011›› Issue (1): 40-43.

• Science and Tethnology • Previous Articles     Next Articles

Study on Individual Tree Diameter Growth Models with the Relative Diameter as Competition Indicator

DENG Cheng1, LÜ Yong2, LEI Yuancai3, ZHANG Jiang2   

  1. 1. Guangxi Forestry Inventory and Planning Institute,Nanning 530011;
    2. Central South University of Forestry and Technology,Changsha 410004;
    3. Chinese Academy of Forestry,Beijing 100091,China
  • Received:2010-10-21 Revised:2010-11-26 Online:2011-02-28 Published:2020-12-16

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Abstract: This paper takes the Richards,Logistic,Mitscherlich,Gompertz and Modified-Weibull equations as the basic tree diameter theoretical equation.By means of re-parameterizing method the site index(SI),stand density(N),individual tree competition indicators-relative diameter(RD) are introduced into these equations.Research has been done on the individual tree diameter growth model of pine plantations.The results show that the individual tree diameter growth equation developed by this method has a good adaptability and high forecast accuracy.Moreover,this equation contains the relative diameters of trees,when relative diameter is equal to 1.0.The individual tree diameter growth models reflect the growth of stand average diameter,which provides a means of coupling from a individual tree growth model to the whole forest growth model.

Key words: forest growth model, diameter growth model, individual tree model, competition indicators, relative diameter

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