Table Head

Site index

ER

TWI

TPI

DE

OP

SR

DS

EL

Effective relief (ER)

0.749***

Topographic wetness index (TWI)

0.396***

0.372***

1

Topographic position index (TPI)

−0.689***

−0.681***

−0.669***

1

Degree of exposure (DE)

−0.289***

−0.432***

−0.070

0.128*

1

Openness (OP)

−0.729***

−0.730***

−0.542***

0.884***

0.251***

1

Solar radiation (SR)

−0.473***

−0.475***

0.100

0.407***

0.126*

0.625***

1

Distance from the sea (DS)

−0.093

0.142**

−0.059

−0.028

−0.234***

−0.041

0.314

1

Elevation (EL)

−0.307***

−0.068

−0.178**

0.171**

0.044

0.149**

0.116*

0.809***

1