Applied and Environmental Soil Science

Review Article

Soil Loss Assessment Using the Revised Universal Soil Loss Equation (RUSLE) Model

Table 4

C factor algorithms.
EquationCommentsReferenceSerial number
C = 0.431 − 0.805 × NDVIA linear relationship is assumed to exist between NDVI and C factor. However, this assumption applies only to photosynthetic and not senescent vegetationDe Jong [117]26
,
and define the NDVI curve		Applicable in European climatic conditions, where and [118, 119]27

,
where
 = NDVI for mixed pixels
 = NDVI for pure soil pixels
 = NDVI for pure vegetation pixels
 = NIR
 = red reflectance for pure vegetation pixels
 = NIR
 = red for pure soil pixels		It provides the best estimate for vegetation proportion fraction where soil pixels are separated from vegetation pixels. The aim of this approach is to reduce the soil background albedo effects at different moisture levelsValor and Caselles [120]28
,
where
C = land cover factor		Applicable in a tropical climate characterized by intense rainfallDurigon et al. [121]29