A spatial statistical analysis of cork oak competition in two Portuguese silvopastoral systems

M.J. Paulo, A. Stein, M. Tomé

Research output: Contribution to journalArticleAcademicpeer-review

22 Citations (Scopus)

Abstract

This paper considers competition among cork oaks (Quercus suber L.) at three plots in two representative Portuguese stands. It uses spatial point pattern functions to describe densities and quantify differences among stands. Relations between cork oak characteristics and indices measuring intertree competition are modelled. Tree competition has a significant effect on tree crown characteristics. In particular, cork oaks with much competition have smaller and more elongated crowns. A standard model that relates crown diameter with diameter at breast height was improved. The R2 value increased from 0.53 to 0.63 by including a crown shape parameter and competition indices.
Original languageEnglish
Pages (from-to)1893-1903
JournalCanadian Journal of Forest Research
Volume32
Issue number11
DOIs
Publication statusPublished - 2002

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