Abstract

GOMEZ-GARCIA, Esteban. Disaggregated dynamic growth models for estimating volume and biomass in even-aged stands. Rev. Chapingo ser. cienc. for. ambient [online]. 2013, vol.19, n.3, pp.337-350. ISSN 2007-4018.  https://doi.org/10.5154/r.rchscfa.2012.08.047.

This study presents a methodological process that can be used to develop disaggregated dynamic growth models for estimating total and merchantable volume and aboveground tree biomass (total or by tree component) for single species in even-aged stands. An example for birch (Betula pubescens Ehrh.) and pedunculate oak (Quercus robur L.) stands in Galicia (northwestern Spain) is used. The stand state at any point in time is defined by three static variables: dominant height, number of trees per hectare and stand basal area. These variables are projected using transition functions in algebraic difference form. A disaggregation system allows estimation of the number of trees and the average height per diameter class from state variables. Finally, output functions that use the estimated diameters and heights are used to estimate volume and biomass.

Keywords : Betula pubescens Ehrh.; Quercus robur L.; disaggregation system; Galicia; Spain.

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