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Forest growth in the light of the thermodynamic theory of ecological systems

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  • Alexandrov, Georgii A.

Abstract

The observed growth of a particular forest stand can be described by many models and explained by some of them. The forest growth models are also successfully applied for extrapolating the growth curve. However, the known models of forest growth are not “one-point” models. They are not designed to predict the future growth of a forest stand from its current state: the model parameters either are not directly measurable or cannot be measured with relevant accuracy. This article is an attempt to use Jørgensen–Svirezhev theory as a new clue to the choice of variables that determines forest growth. The postulates of this theory combined with the pipe theory of tree growth lead to conclusion that biomass of a stand should be proportional to the four-fifths power of its age. Empirical validation, however, disclosed that calendar age is rather approximate measure of ecosystem ontogeny. Delayed development or intensive thinning of a forest stand at the early stages leads to rejuvenation bias. Thus derived 4/5-law model approximates well-known Chapman–Richards model in the neighborhood of the inflection point, and is applicable to middle-aged forest stands.

Suggested Citation

  • Alexandrov, Georgii A., 2008. "Forest growth in the light of the thermodynamic theory of ecological systems," Ecological Modelling, Elsevier, vol. 216(2), pages 102-106.
    • Handle: RePEc:eee:ecomod:v:216:y:2008:i:2:p:102-106
    DOI: 10.1016/j.ecolmodel.2007.11.022
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    Cited by:

    1. Alexandrov, G.A & Golitsyn, G.S., 2015. "Biological age from the viewpoint of the thermodynamic theory of ecological systems," Ecological Modelling, Elsevier, vol. 313(C), pages 103-108.
    2. Parsons, Russell A. & Mell, William E. & McCauley, Peter, 2011. "Linking 3D spatial models of fuels and fire: Effects of spatial heterogeneity on fire behavior," Ecological Modelling, Elsevier, vol. 222(3), pages 679-691.
    3. Lin, Hua & Cao, Min, 2008. "Plant energy storage strategy and caloric value," Ecological Modelling, Elsevier, vol. 217(1), pages 132-138.

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