Shannon-Wiener Diversity (H’)

P i ln ( p i )

Pi is the proportion of S made up of the ith species, and ln is natural logarithm.

Density (Di)

N A T A s a m p l e d

NA is the number of species “A”; TAsampled is total area sampled.

Relative Density (RD)

R D T D × 100

RD is the relative density of species; AD: is the absolute density of species (per 100 m2) and TD is the total density of flora species (per 100 m2).

Frequency (F)

N P a T P s a m p l e d

NPa is the number of plots in which species “A” occurs; and TPsampled is total plots sampled.

Relative Frequency (RF)

A F T F × 100

RF is relative frequency of species; AF: is the absolute frequency of the species, and TF is the sum of absolute frequencies of all species.

Cover (Ci)

π ( D B H ) 2 4000

DBH is diameter at breast height (1.3 m); π 3.14.

Relative Cover (RCi)

A C i T C i × 100

RC is the relative cover of species; AC is an absolute cover (or basal area) of species i, and TDi is a total cover (or basal area) of all species.

Family Importance Value Index (FIVI)

R D + R F + R C i 3

Above-Ground Biomass (AGB)

W D ( E X P ( 1.4229 + 2.148 ( ln [ D B H ] ) + 0.207 ( ln [ D B H ] ) 2 0.0281 ( ln [ D B H ] ) 3 ) ) where: WD is the wood density (0.6)

Below-Ground Biomass (BGB)

E X P ( 1.0587 + 0.8836 ( ln [ A G B ] ) )

Total Biomass (TB)

A G B + B G B + D W B

DWB is deadwood biomass

Total Carbon (TC)

0.5 × T B

(IPCC, 2003)


T C × M W ( CO 2 )

TC is the total carbon; MW is the molecular weight of Carbon (IV) oxide (44/12).