Rapport1982Öppen tillgång
Some statistical aspects of spatial distribution models for plants and trees
Diggle, Peter J.
Sammanfattning
The paper is an account of some statistical analyses carried out in conjuction with a silvicultural research project in the department of Operational Efficiency, College of Forestry, Garpenberg. Sweden (Eriksson, L & Eriksson, O in preparation 1981). In Section 2, a statistic due to Moran (1950) is used to detect spatial interaction amongst counts of the numbers of young trees in sample plots laid out in a systematic grid arrangement. Section 3 discusses the construction of bivariate distributions for the numbers of wild and planted trees in a sample plot. Section 4 considers the relationship between the distributions of the number of trees in a plot and their total basal area. Section 5 is a review of statistical methods for ute in connection with preliminary surveys of large areas of forest. In particular, Section 5 discusses tests of spatial randomness for a single species, tests of independence between two species, and estimation of the number of trees per unit area.
Nyckelord
statistical analyses; sample plots
Publicerad i
Studia Forestalia Suecica
1982,
ISBN: 91-38-07077-4
Utgivare: College of Forestry, Swedish University of Agricultural Sciences
Permanent länk till denna sida (URI)
https://res.slu.se/id/publ/125409