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A silvicultural stand model: implications for radiata pine management.
Authors: I. D. Whiteside, W. R. J. SuttonPublication: New Zealand Journal of Forestry, Volume N.Z.J.For. 1983, Issue N.Z.J.For. 28(3) 1983, pp 300-313, Nov 1983
Publisher: New Zealand Institute of Forestry
Abstract: Increased understanding of the interdependence of the growth and quality of radiata pine with site, silviculture and utilisation resulted in increased problems of communications between research and management. The solution was the development of a computer based silvicultural stand model (SILMOD), which, by incorporating the accumulated research information and experience, provides predictions of the size, quality and value of a radiata pine stand given almost any New Zealand site, silvicultural treatment or rotation, and for a range of processing options.
Work with the model has shown that site factors (namely, site productivity, topography and location in relation to mill and market) have the greatest effect on forest profitability. Also important are the silvicultural decisions on the final crop stocking, rotation, the timing of pruning and thinning, and the processing factors of mill conversion and choice of minimum sawlog size. Overhead costs can also be critical.
The relative importance of these factors is illustrated by comparing two forest regimes on different Otago/Southland sites.
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