Skip to main content

Table 2 Landform classes defined by topographic indices and slope (Weiss 2001).

From: Identifying malaria vector breeding habitats with remote sensing data and terrain-based landscape indices in Zambia

Landform Class

TPI500

TPI2000

Slope

deep streams

≤-1

≤-1

 

shallow valleys and mid-slope drainage pathways

≤-1

>-1 and <1

 

upland drainage are

≤-1

≥1

 

U-shaped valleys

>-1 and <1

≤-1

 

plains

>-1 and <1

>-1 and <1

≤5°

open slopes

>-1 and <1

>-1 and <1

>5°

upper slopes and mesas

>-1 and <1

≥1

 

local ridges and hills in large valleys

≥1

≤-1

 

mid-slope of ridges and small hills in plains

≥1

>-1 and <1

 

high ridges

≥1

≥1