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Castanea sativa high forest stands. Biometrical study in the North of Portugal

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dc.contributor.authorNunes, Luís
dc.contributor.authorMonteiro, Maria do Loreto
dc.contributor.authorPatrício, Maria Sameiro
dc.contributor.authorAlpuim, Teresa
dc.contributor.authorMartins, Lucílio
dc.date.accessioned2011-07-04T13:30:09Z
dc.date.available2011-07-04T13:30:09Z
dc.date.issued2004
dc.description.abstractWhere site conditions are appropriate, Castanea sativa Mill. is a very suitable species for sub-mediterranical regions (Guerreiro, 1957). It is precisely in the north of Portugal mainly in Tras-os-Montes and Beiras where Castanea sativa is more representative. Over the last decade many new stands were installed under the European Community policies supporting forest investment. The main purpose for these young plantations is to produce high quality wood. Logs with medium and large dimensions can attain interesting profitability levels (125 €/m3 over bark in trees with diameter at breast height (d) over 30 cm). Taking into account the economical value of Castanea sativa and its increasing area expansion, without neglecting environmental and social values, it becomes important to follow sound silvicultural prescriptions and management practices which depend, among others, on the accurate estimation of wood contents through volume determination. In this study, regression analysis theory was used to obtain volume equations as a function of standing tree easily measured variables and also for modelling the relationship of tree total height (h) to diameter at breast height (d). A methodology was adopted to obtain models with the lowest possible bias in its volume estimates and, at the same time, with low correlation among regressors. Selected models, which are presented, can be used to construct volume tables, very useful tools for forest producers, namely small farmers in such a way that, as much as possible, avoid revenue losses Comparisons were made with equations used by the Forest Services.por
dc.identifier.citationNunes, Luís; Monteiro, Maria do Loreto; Patrício, Maria do Sameiro; Alpuim, Teresa; Martins, Lucílio (2004). Castanea sativa high forest stands. Biometrical study in the North of Portugal. In III International Chestnut Congress. Chavespor
dc.identifier.urihttp://hdl.handle.net/10198/5709
dc.language.isoengpor
dc.peerreviewedyespor
dc.subjectCastanea sativapor
dc.subjectHigh forestpor
dc.subjectVolume equationspor
dc.subjectHeight-diameter curvespor
dc.titleCastanea sativa high forest stands. Biometrical study in the North of Portugalpor
dc.typeconference object
dspace.entity.typePublication
oaire.citation.conferencePlaceChaves, Portugalpor
oaire.citation.titleIII International Chestnut Congresspor
person.familyNameNunes
person.familyNamePatrício
person.givenNameLuís
person.givenNameMaria Sameiro
person.identifier.ciencia-id6310-0055-C4A0
person.identifier.orcid0000-0002-8913-785X
person.identifier.orcid0000-0001-7773-8802
person.identifier.ridG-6811-2014
person.identifier.scopus-author-id35222136600
person.identifier.scopus-author-id35222136400
rcaap.rightsopenAccesspor
rcaap.typeconferenceObjectpor
relation.isAuthorOfPublicatione5a7d07d-f55c-4068-a4ec-258574539652
relation.isAuthorOfPublicationa6358916-0f73-473d-b43c-26c7de98d4e3
relation.isAuthorOfPublication.latestForDiscoverya6358916-0f73-473d-b43c-26c7de98d4e3

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