Allometric equations for predicting mineralomass in high-forest chestnut stands in Portugal

Patrício, Maria Sameiro; Tomé, Margarida

Publication

Allometric equations for predicting mineralomass in high-forest chestnut stands in Portugal

2017Conference object

dc.contributor.author	Patrício, Maria Sameiro
dc.contributor.author	Tomé, Margarida
dc.date.accessioned	2018-02-23T10:26:36Z
dc.date.available	2018-02-23T10:26:36Z
dc.date.issued	2017
dc.description.abstract	The evaluation of nutrients in biomass tree-components is a process time consuming and expensive, often involving tree felling, not always possible or desirable. Thus, mineralomass prediction equations are an important tool for the quantification of the nutrients exported in management and harvesting activities towards to its replacement and sustainable management as well as to evaluate the effect of other disturbances in the balance of ecosystems. Thus, given the importance of the relationship of biomass and nutrients (mineralomass) for dynamic and sustainable management of chestnut woodlands, aboveground mineralomass was studied in sweet chestnut (Castanea sativa Mill.) high forest stands located in Northern Portugal. Nutrient specific prediction equations that allow estimating the mineralomass (N, P, K, Ca, Mg, S, B and C) above the ground, total and by components: stem-wood, stem-bark, branches, leaves and flowers, based on tree dendrometric variables, DBH (diameter breast height) and total height, were developed. Linear and non-linear regression estimation methods were used. Data analysis is based on information collected in destructive analysis of thirty-four felled trees, distributed by the existing diameter classes (10-65 cm) in three adult chestnut stands. Several linear and nonlinear equations were fitted by the least squares method to select models. A simultaneous fit by SUR method using iterative seemingly unrelated regression (ITSUR) was used for the final selected models. The best fitting models are presented.	pt_PT
dc.description.version	info:eu-repo/semantics/publishedVersion	pt_PT
dc.identifier.citation	Patrício, Maria do Sameiro; Tomé, Margarida (2017). Allometric equations for predicting mineralomass in high-forest chestnut stands in Portugal. In VI International Chestnut Symposium. Samsun, Turkey	pt_PT
dc.identifier.uri	http://hdl.handle.net/10198/15952
dc.language.iso	eng	pt_PT
dc.peerreviewed	yes	pt_PT
dc.publisher	International Society for Horticultural Science	pt_PT
dc.rights.uri	http://creativecommons.org/licenses/by/4.0/	pt_PT
dc.subject	Castanea sativa Mill.	pt_PT
dc.subject	Allometric models	pt_PT
dc.subject	Above-ground tree mineralomass	pt_PT
dc.subject	Silviculture	pt_PT
dc.subject	Forest management	pt_PT
dc.title	Allometric equations for predicting mineralomass in high-forest chestnut stands in Portugal	pt_PT
dc.type	conference object
dspace.entity.type	Publication
oaire.citation.title	Book of abstracts VI International chestnut symposium	pt_PT
person.familyName	Patrício
person.givenName	Maria Sameiro
person.identifier.ciencia-id	6310-0055-C4A0
person.identifier.orcid	0000-0001-7773-8802
person.identifier.rid	G-6811-2014
person.identifier.scopus-author-id	35222136400
rcaap.rights	openAccess	pt_PT
rcaap.type	conferenceObject	pt_PT
relation.isAuthorOfPublication	a6358916-0f73-473d-b43c-26c7de98d4e3
relation.isAuthorOfPublication.latestForDiscovery	a6358916-0f73-473d-b43c-26c7de98d4e3