Abstract

BARRETO, Luís Soares. SB-BACO4: A Gompertzian Discrete Model for Tree Competition. Silva Lus. [online]. 2003, vol.11, n.1, pp.77-89. ISSN 0870-6352.

For interspecific competition between tree populations, the author proposes a discrete Gompertzian model named SB-BACO 4. The model is a direct extension of a discrete form of the Gompertz equation. Both deterministic and stochastic versions are exhibited. The model is capable of the correct recognition of six distinct patterns of tree interaction, previously defined by the author. He uses model SB-BACO 4 to establish the simulator SB-PINHARDI for mixed stands of Quercus robur+Pinus pinaster and Fraxinus excelsior+Pinus pinaster. In appendices, the author presents the listing of the program, written in BASIC, and a sample of its output. A general Gompertzian explicit model for tree competition is also presented (SB-BACO 5).

Keywords : discrete model; general model for plant competition; interspecific tree competition; simulation of mixed stands; stochastic model; Fraxinus excelsior; Pinus pinaster; Quercus robur.

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