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New Zealand Journal of Forestry (1979) 24(1): 108–124
©New Zealand Institute of Forestry

Research article
Validation of growth models used in forest management

C.J. Goulding

The concept of validation is discussed in the context of models used for simulating the growth of trees. Validation attempts to increase confidence in a model's ability to provide useful and correct inferences about the growth of stands, rather than to prove a model is correct. The ability to predict levels in yield can be tested by comparison with sample-plot data or stands with known plot-histories. Confidence in the inferences drawn from the model's behaviour can be obtained from extensive running of the model using designed experiments.
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