Table 3 Data used for the study and analysis.

From: Impact of soil erosion on agricultural sustainability based on crop water productivity in semi-arid Iran

Factors

Variable type

Scale

Data source

Elevation (m asl)

Continuous

30*30 m

DEM (ASTER satellite) (https://earthexplorer.usgs.gov)

Lithology

Categorical

1:50,000

Geological Survey and Mineral Exploration of Iran (https://gsi.ir/)

Land use

Categorical

1:50,000

Iran National Cartographic Center (https://ncc.gov.ir/)

Hydrologic soil group

Categorical

1:50,000

Ministry of Agriculture Jihad (https://maj.ir/)

Soil depth (m)

Continuous

30*30 m

Ministry of Agriculture Jihad (https://maj.ir/)

Drainage density (km/km2)

Continuous

30*30 m

Geological Survey and Mineral Exploration of Iran (https://gsi.ir/)

SAWC

Continuous

30*30 m

Ministry of Agriculture Jihad (https://maj.ir/)

Population density (person/area)

Continuous

30*30 m

Statistical Centre of Iran (https://amar.org.ir/)

Slope (degrees)

Continuous

30*30 m

DEM (ASTER satellite) (https://earthexplorer.usgs.gov)

R factor

Continuous

30*30 m

Iran Water Resources Management Company (https://www.wrm.ir/)

Distance to road (m)

Continuous

30*30 m

Iran National Cartographic Center (https://ncc.gov.ir/)