Table 1 Hyperspectral indices used to estimate plant diversity.

DVI

R₇₈₂ − R₆₇₅

NDVI

(R₇₈₂ − R₆₇₅)/(R₇₈₂ + R₆₇₅)

RVI

R₆₇₅/R₇₈₂

SAVI

((R₇₈₂-R₆₇₅)/(R₇₈₂ + R₆₇₅ + 0.2)) (1.2)

TSAVI

0.5(R₇₈₂ − 0.5R₆₇₅−0.2)/(0.5R₇₈₂ + 0.5R₆₇₅−0.1)

MSAVI

\(2\ast {R}_{800}+1-{(2\ast {R}_{800}+1)}^{2}-8\ast {({R}_{800}-{R}_{670})}^{\frac{1}{2}}\)

PVI

\(({R}_{800}-0.2{R}_{670}-0.6)\)/1.019

NDVI705

(R₇₅₀ − R₇₀₅)/(R₇₅₀ + R₇₀₅)

mNDVI705

(R₇₅₀ − R₇₀₅)/(R₇₅₀ + R₇₀₅ − 2 R₄₄₅)

mSR705

(R₇₅₀ − R₄₄₅)/(R₇₀₅ + R₄₄₅)

REP

R₇₀₀ + 40[(R₆₇₀ + R₇₈₀)/2 − R₇₀₀]/(R₇₄₀ − R₇₀₀)

VOG1

R₇₄₀/R₇₂₀

VOG2

(R₇₃₄ − R₇₄₇)/(R₇₁₅ + R₇₂₆)

VOG3

(R₇₃₄ − R₇₄₇)/(R₇₁₅ + R₇₂₀)

PRI

(R₅₃₁ − R₅₇₀)/(R ₅₃₁ + R₅₇₀)

OSAVI

(1 + 0.16)(R₈₀₀ − R₆₇₀)/(R₈₀₀ + R₆₇₀ + 0.16)

DVI

R₈₁₀ − R₆₈₀

GREEN-NDVI

(R₇₅₀ − R₅₅₀)/(R₇₅₀ + R₅₅₀)

FD₇₃₀

The first derivative value at 730 nm

Db

The highest first derivative value between 490–530 nm

λb

The band at Db

Dy

The highest first derivative value between 550–580 nm

λy

The band at Dy

Dr

The highest first derivative value between 680–780 nm

Λr

The band at Dy

Rg

The highest reflectance value between 510–580 nm

Λg

The band at Rg

Ro

The smallest reflectance value between 640–700 nm

Λo

The band at Ro

SDb

The sum of first derivative values between 490–530 nm

SDy

The sum of first derivative values between 550–580 nm

SDr

The sum of first derivative values between 680–780 nm

Rg/Ro

Rg/Ro

(Rg-Ro)/(Rg + Ro)

(Rg − Ro)/(Rg + Ro)

SDr/SDb

SDr/SDb

SDr/SDy

SDr/SDy

(SDr-SDb)/(SDr + SDb)

(SDr-SDb)/(SDr + SDb)

Hspec*

\(-\sum _{{\rm{i}}=1}^{{\rm{n}}}{{\rm{p}}}_{{\rm{i}}}{{\rm{lnp}}}_{{\rm{i}}}\)

Espec*

\(1-\sum _{{\rm{i}}=1}^{{\rm{n}}}{{{\rm{p}}}_{{\rm{i}}}}^{2}\)

VarH**

\(\frac{\sqrt{\frac{1}{{\rm{n}}}{\sum }_{{\rm{i}}=1}^{{\rm{n}}}{(R-\bar{R})}^{2}}}{\bar{R}}\)