Index

Formula

Description

Shannon-Wiener Diversity (H’)

$-{{\displaystyle \sum }}^{\text{}}Pi\ln \left(pi\right)$

Pi is the proportion of S made up of the i^th species, and ln is natural logarithm.

Density (Di)

$\frac{N_A}{T{A}_{sampled}}$

N_A is the number of species “A”; TA_sampled is total area sampled.

Relative Density (RD)

$\frac{RD}{TD}\times 100$

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)

$\frac{N{P}_a}{T{P}_{sampled}}$

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

Relative Frequency (RF)

$\frac{AF}{TF}\times 100$

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)

$\frac{\pi \ast {\left(DBH\right)}^2}{4000}$

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

Relative Cover (RCi)

$\frac{ACi}{TCi}\times 100$

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)

$\frac{RD+RF+RCi}{3}$

Above-Ground Biomass (AGB)

$WD\ast \left(EXP\left(-1.4229+2.148\left(\ln \left[DBH\right]\right)+0.207{\left(\ln \left[DBH\right]\right)}^2-0.0281{\left(\ln \left[DBH\right]\right)}^3\right)\right)$ where: WD is the wood density (0.6)

Below-Ground Biomass (BGB)

$EXP\left(-1.0587+0.8836\ast \left(\ln \left[AGB\right]\right)\right)$

Total Biomass (TB)

$AGB+BGB+DWB$

DWB is deadwood biomass

Total Carbon (TC)

$0.5\times TB$

(IPCC, 2003)

CO₂e

$TC\times M_W\left({\text{CO}}_{\text{2}}\right)$

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