BPoirier: Tree spatial pattern in Beau Poirier plot, Haye forest, France

Description

Spatial pattern of 162 beeches, 72 oaks and 3 hornbeams in a 1-ha 140 yr-old temperate forest plot in Haye, France.

Usage

data(BPoirier)

Arguments

encoding

latin1

format

A list with 8 components: $rect is a vector of coordinates $(xmin,ymin,xmax,ymax)$ of the origin and the opposite corner of a 110 by 90 m rectangular plot. $tri1 is a list of vertice coordinates $(ax,ay,bx,by,cx,cy)$ of contiguous triangles covering the denser part of the plot. $tri2 is a list of vertice coordinates $(ax,ay,bx,by,cx,cy)$ of contiguous triangles covering the sparser part of the plot. $poly1 is a list of vertice coordinates $(x,y)$ of the polygon enclosing BPoirier$tri1. $poly2 is a list of two polygons vertice coordinates $(x,y)$ enclosing BPoirier$tri2. $trees is a list of tree coordinates $(x,y)$. $species is a factor with 3 levels $("beech","oak","hornbeam")$ corresponding to species names of the trees. $dbh is a vector of tree size (diameter at breast height in cm).

source

Pard�, J. 1981. De 1882 � 1976/80 : les places d'exp�rience de sylviculture du hetre en foret domainiale de Haye. Revue Foresti�re Fran�aise, 33: 41-64.

References

Goreaud, F. 2000. Apports de l'analyse de la structure spatiale en foret temp�r�e � l'�tude et la mod�lisation des peuplements complexes. Th�se de doctorat, ENGREF, Nancy, France. P�lissier, R. & Goreaud, F. 2001. A practical approach to the study of spatial structure in simple cases of heterogeneous vegetation. Journal of Vegetation Science, 12: 99-108.

Examples

Run this code

data(BPoirier)
BP.spp <- spp(BPoirier$trees, mark=BPoirier$species, window=BPoirier$rect)
plot(BP.spp)

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