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Matti Maltamo (email), Kalle Eerikäinen

The Most Similar Neighbour reference in the yield prediction of Pinus kesiya stands in Zambia

Maltamo M., Eerikäinen K. (2001). The Most Similar Neighbour reference in the yield prediction of Pinus kesiya stands in Zambia. Silva Fennica vol. 35 no. 4 article id 579. https://doi.org/10.14214/sf.579

Abstract

The aim of the study was to develop a yield prediction model using the non-parametric Most Similar Neighbour (MSN) reference method. The model is constructed on stand level but it contains information also on tree level. A 10-year projection period was used for the analysis of stand growth. First, the canonical correlation matrix was calculated for the whole study material using stand volumes at the beginning and at the end of the growth period as independent variables and stand characteristics as dependent variable. Secondly, similar neighbour estimates were searched from the data categories reclassified according to thinnings. Due to this, it was possible to search for growth and yield series which is as accurate as possible both at the beginning and at the end of the growth period. The reliability of the MSN volume predictions was compared to the volumes predicted with the simultaneous yield model. The MSN approach was observed to be more reliable volume predictor than the traditional stand level yield prediction model both in thinned and unthinned stands.

Keywords
stand development; difference equations; non-parametric regression; plantation forests

Author Info
  • Maltamo, Faculty of Forestry, University of Joensuu, P.O. Box 111, FIN-80101 Joensuu, Finland E-mail matti.maltamo@forest.joensuu.fi (email)
  • Eerikäinen, Faculty of Forestry, University of Joensuu, P.O. Box 111, FIN-80101 Joensuu, Finland E-mail ke@nn.fi

Received 5 May 2000 Accepted 6 November 2001 Published 31 December 2001

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Available at https://doi.org/10.14214/sf.579 | Download PDF

Creative Commons License CC BY-SA 4.0

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