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    ABSTRACT

New Zealand Journal of Forestry (2000) 44(4): 26–31
©New Zealand Institute of Forestry

Research article
Evaluation of a model beech forest growing on the West Coast of the South Island of New Zealand.

E. G. Mason



A matrix model representing beech forest on the West Coast of the South Island of New Zealand was evaluated. The model was widely distributed and had been used to "attest " that a proposed low-impact harvesting scheme was unsustainable. The evaluation showed that while the mathematics of the model were acceptable, the model's software encouraged a naive user to adopt unrealistic assumptions and to project effects of harvesting over periods of centuries. The matrix model, while adequate for initial planning, was unsuitable for such long projections, and a spatially explicit, individual-tree modelling approach was suggested as an alternative that would suit adaptive management.


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