Optimizing the sample size to estimate growth in I-214 poplar plantations at definitive tree density for bioenergetic production
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Failid
Kuupäev
2018
Kättesaadav alates
Autorid
Marziliano, P.A.
Russo, D.
Altieri, V.
Macrì, G.
Lombardi, F.
Ajakirja pealkiri
Ajakirja ISSN
Köite pealkiri
Kirjastaja
Abstrakt
In Europe, over the last decades, the arboriculture for woody biomass production has
significantly expanded, often using poplar plantations. In order to maximize prod
uction, the
flexibility of the cultivation algorithms becomes necessary. For this reason, it is necessary to
apply monitoring tools for the evaluation and estimate of the wood productions, without
significantly affect the production costs. In particular, f
or the estimate of the productions, the
choice of the sample size is of particular importance. The aim of this study was to verify a
simplified sampling approaches in poplar plantations characterized by constant tree density. The
research was conducted in
a poplar plantation on the Tuscan hills (Italy). The surveys were carried
out each year for 13 years, from 4 to 16 years old. Through different statistical techniques, the
change in the social position of each tree over time was evaluated. The results show
ed that the
social position of each tree has been characterized by the first years after the plantation.
Consequently, the estimate of the productions can be carried out by analysing the diameter
increment of 10% of the trees, included in the diameter clas
ses around the medium
-
sized tree at
the time of the survey. This study provided a valid method for forest managers characterized by
a simplified approach useful to estimate the growth and yield of hybrid poplars. This method will
permit reliable biomass es
timates, but also a reduction of the costs in the sampling activities in
the field.
Kirjeldus
Article
Märksõnad
poplar, woody biomass, basal area, medium rotation forestry, cluster analysis, articles