d) C-factor layer
Land cover of the areas was compiled from 1:50,000 Landsat TM acquired in 2003 and
mapped at the 1:50,000 scale. The maps were digitally encoded in GIS database. The land cover
classes include dry evergreen forest, dry deciduous forest, Mixed deciduous forest, plantation, grass
land, paddy field, field crop, community area and water body. To establish the C-factor layer, the
value for each class of the land cover was assigned as identified by LDD (LDD, 2000).