Research Article
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 |
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