mingling: A forest spatial structure index characterizing tree...

In forestSAS: Forest Spatial Structure Analysis Systems

Description

The tree attribute mingling describes the species variety in the vicinity of a given reference tree and has been defined as the proportion of the n nearest neighbours that do not belong to the same species

Usage

mingling(x)

Arguments

x	A vector composed by 5 tree species

Value

Result will retrun five values,0,0.25,0.5,0.75,1,which means the propertion of the same tree species with refercence tree in the 4 nearest neighbours

Author(s)

Zongzheng Chai, [e-mail]

References

Hui GY, Zhao X, Zhao Z, Gadow Kv. 2011. Evaluating tree species spatial diversity based on neighborhood relationships. Forest Sci 57:292-300

Examples

spname1<-c("sp1","sp1","sp1","sp1","sp1")
spname2<-c("sp1","sp1","sp1","sp1","sp2")
spname3<-c("sp1","sp1","sp1","sp3","sp2")
spname4<-c("sp1","sp1","sp4","sp3","sp2")
spname5<-c("sp1","sp5","sp4","sp3","sp2")

mingling1<-mingling(spname1)
mingling1
mingling2<-mingling(spname2)
mingling2
mingling3<-mingling(spname3)
mingling3
mingling4<-mingling(spname4)
mingling4
mingling5<-mingling(spname5)
mingling5

Example output

[1] 0
[1] 0.25
[1] 0.5
[1] 0.75
[1] 1

forestSAS documentation built on May 1, 2019, 10:15 p.m.