GIS-based gully erosion susceptibility modeling, adapting bivariate statistical method and AHP approach in Gombe town and environs Northeast Nigeria

Geoenvironmental Disasters

Table 3 Prediction rate as derived from frequency ratio

Conditioning factors	min RF	max RF	(max-min)	min tot.	Prediction rate
Profile curvature	0.27	0.45	0.18	0.18	1
Aspect	0.01	0.30	0.29	0.18	1.61
Road buffer	0	0.29	0.29	0.18	1.64
Geology	0.03	0.34	0.30	0.18	1.68
TWI	0.14	0.47	0.32	0.18	1.79
Elevation	0	0.36	0.36	0.18	2.03
Landuse	0.07	0.48	0.40	0.18	2.27
Slope	0	0.44	0.44	0.18	2.49
Soil texture	0	0.58	0.58	0.18	3.25
Drainage buffer	0	0.75	0.75	0.18	4.21