Abstract

BARRETO, Luís Soares. The Stochastic Dynamics of Self-Thinned Pure Stands: A Simulative Quest. Silva Lus. [online]. 2006, vol.14, n.2, pp.227-238. ISSN 0870-6352.

The author establishes and uses stochastic simulators for self-thinned even-aged, and uneven-aged pure stands of Pinus pinaster Ait. In both types of simulators he considers several levels of environmental stochasticity. From the application of the simulator for even-aged stands he concludes that the values in the range -1.45 to -1.49, found in the literature, and obtained from empirical data, do not allow the definitive rejection of the 3/2 power law. The simulator for uneven-aged stands has a mechanism to mimic different degrees of homeostasis. The author performed several sets of runs with this model, for combinations of values of environmental variability and of homeostasis. He then presents and interprets his simulated data. The model for uneven-aged stands reveals ergodicity. The author formally characterizes the dynamics of the area per tree.

Keywords : area per tree; ergodicity; Pinus pinaster Ait.; self-thinned even-aged pure stands; self-thinned uneven-aged pure stands; stochastic simulators; 3/2 power law.

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