Table 3 Conversion of suitability values to suitability classes.

From: Iran’s Land Suitability for Agriculture

Suitability index (SI)

Suitability class (SC)

SI = 0

Unsuitable

0 < SI ≤ 0.2

Very Poor

0.2 < SI ≤ 0.4

Poor

0.4 < SI ≤ 0.6

Medium

0.6 < SI ≤ 0.8

Good

SI > 0.8

Very Good