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Annals of Forest Science (2014) 71:741–750 DOI 10.1007/s13595-014-0369-1 ORIGINAL PAPER Use of Gumbel and Weibull functions to model extreme values of diameter distributions in forest stands J. Javier Gorgoso-Varela & Alberto Rojo-Alboreca Received: 10 January 2014 /Accepted: 27 February 2014 /Published online: 19 March 2014 INRA and Springer-Verlag France 2014 Abstract & Results In general, the Weibull distribution was the most & Context Families of the Gumbel (type I), Fréchet (type II) suitable model for describing the maximum diameters. The and Weibull (type III) distributions can be combined in the mode method of the Gumbel yielded the best results for generalized extreme value (GEV) family of distributions. minimum diameters of birch and Monterrey pine. The Maximum and minimum values of diameters in forest stands Gumbel distribution, fitted by either the mode- or moments- canbeusedinforestmodelling,mainlytodefineparameters based methods, proved more suitable than the Weibull distri- of the functions used in diameter class models as well as in bution for describing the minimum diameters in maritime pine some practical cases, such as modelling maximum diameters and Scots pine stands. for sawing and processing purposes. & Conclusion In some cases, better results were obtained & Aims The purpose of this study was to
Annals of Forest Science – Springer Journals
Published: Mar 19, 2014
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