Vegetation Structure and Tree Species Diversity inside and outside a Newly Established Zalon Taung National Park in Northwest Myanmar

Table 1

Formulae for calculating the IVI.

Parameters	Formulae
Importance Value Index	IVI = relative density + relative frequency + relative dominance
Density of a species	De = number of a species/total area sampled
Frequency of a species	F = area of plots in which a species occurred/total area sampled
Dominance of a species	Do = total basal area of a species/total area sampled
Relative density of a species	RDe = density of a species/total density of all species  100
Relative frequency of a species	RF = frequency of a species/total frequency of all species  100
Relative dominance of a species	RDo = dominance of a species/total dominance of all species  100