Please use this identifier to cite or link to this item: http://hdl.handle.net/10174/21544

Title: Influence of umbrella pine (Pinus pinea L.) stand type and tree characteristics on cone production
Authors: Gonçalves, Ana Cristina
Afonso, Anabela
Pereira, Dulce
Pinheiro, Anacleto
Keywords: Bivariate correlation
Competition index
Principal component analysis
Tree dimension
Issue Date: 2017
Citation: Gonçalves, A.C.; Afonso, A.; Pereira, D.G.; Pinheiro, A.; 2017. Influence of umbrella pine (Pinus pinea L.) stand type and tree characteristics on cone production. Agroforestry Systems, 91. 1019–1030. DOI 10.1007/s10457-016-9975-2
Abstract: Most umbrella pine (Pinus pinea L.) stands are managed as agroforestry systems, whose main production is fruit, due to the edible and highly nutritious kernels, and are frequently associated to natural or seeded pastures and grazing. The stands have low density, in order to enhance crown growth and fruit production. Nevertheless, cone production, both with regard to number and weight, varies greatly between stands, trees and years. In this study were selected three agroforestry systems, representative of umbrella pine stands whose main production is fruit, and one stand representative of the timber production system, where fruit is the secondary production. It was evaluated the variability in cone production as a function of the tree’s diameter at breast height and crown diameter and the individual tree’s competition status. The results indicate that stands managed in agroforestry systems with lower competition and individuals with larger diameter at breast height and crown diameter tend to produce more and heavier cones per tree. The first two principal components of the principal component analysis explain 84 % of the variance in cone production, trees’ dimensions and competition index. Tree competition status has a negative impact on production per tree.
URI: https://link.springer.com/article/10.1007/s10457-016-9975-2
http://hdl.handle.net/10174/21544
Type: article
Appears in Collections:ICAAM - Publicações - Artigos em Revistas Internacionais Com Arbitragem Científica
ERU - Publicações - Artigos em Revistas Internacionais Com Arbitragem Científica

Files in This Item:

File Description SizeFormat
Goncalves_etal_2017.pdf706.51 kBAdobe PDFView/Open
FacebookTwitterDeliciousLinkedInDiggGoogle BookmarksMySpaceOrkut
Formato BibTex mendeley Endnote Logotipo do DeGóis 

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

 

Dspace Dspace
DSpace Software, version 1.6.2 Copyright © 2002-2008 MIT and Hewlett-Packard - Feedback
UEvora B-On Curriculum DeGois