dominance | R Documentation |
The tree attribute dominance was proposed by Hui et al. (1998) to relate the relative dominance of a given tree to its species or silvicultural significance. It is defined as the proportion of the n nearest neighbours of a given reference tree which are bigger than the reference tree.
dominance(x)
x |
A vector composed by 5 tree attributes, such as dbh,biomass. |
Result will retrun five values,0,0.25,0.5,0.75,1,which means the propertion of the larger tree attributes in the 4 nearest neighbours than the reference tree.
Zongzheng Chai, chaizz@126.com
Gadow Kv, and Hui GY. 2002. Characterizing forest spatial structure and diversity. Proc of the SUFOR international workshop: Sustainable forestry in temperate regions. p 20-30.
dbh1<-c(5,4,4,4,4)
dbh2<-c(5,4,4,4,6)
dbh3<-c(5,4,4,7,6)
dbh4<-c(5,4,8,7,6)
dbh5<-c(5,9,8,7,6)
dominance1<-dominance(dbh1)
dominance1
dominance2<-dominance(dbh2)
dominance2
dominance3<-dominance(dbh3)
dominance3
dominance4<-dominance(dbh4)
dominance4
dominance5<-dominance(dbh5)
dominance5
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