Landslide vulnerability mapping using multi-criteria decision-making approaches: in Gacho Babba District, Gamo Highlands Southern Ethiopia

Tadesse, Lemma; Uncha, Abera; Toma, Thomas

doi:10.1007/s42452-024-05693-9

Table 3 Distribution of study area by Landslide causative factors, susceptibility level, and rating scale

From: Landslide vulnerability mapping using multi-criteria decision-making approaches: in Gacho Babba District, Gamo Highlands Southern Ethiopia

Causative factors	Class	Pixel class	Area		Landslide susceptibility	Rating scale
Causative factors	Class	Pixel class	(Ha)	(%)	Landslide susceptibility	Rating scale
Slope (degree)	0–15	172,858	6914.32	28.68	Very low	1
	15–25	174,841	6993.64	29.02	Low	2
	25–35	132,050	5282	21.91	Moderate	3
	35–45	83,480	3339.20	13.85	High	4
	> 45	39,405	1576.20	6.54	Very high	5
Elevation (Meter)	1284–1742	83,257	3330.28	14.41517	Very Low	1
	1742–2079	135,689	5427.56	23.49329	Low	2
	2079–2405	140,787	5631.48	24.37596	Moderate	3
	2405–2752	124,531	4981.24	21.56138	High	4
	2752–3493	93,301	3732.04	16.1542	Very high	5
Aspect	West and East	119,105	4764.20	19.84	Very high	5
	SW and NW	143,772	5750.88	24.05	High	4
	SE & NE	153,703	6148.12	25.71	Moderate	3
	N & S	116,077	4643.08	19.47	Low	2
	Flat	65,377	2615.08	10.93	Very low	1
Stream distance (Meter)	> 2000	26,844	1073.76	4.420563	Very low	1
	1500 – 2000	41,381	1655.24	6.814458	Low	2
	1000 – 1500	96,622	3864.88	15.91133	Moderate	3
	500 – 1000	174,640	6985.6	28.75902	High	4
	0 – 50 0	267,766	10,710.64	44.09464	Very high	5
Drainage density (km²)	0 – 0.67	307,674	12,306.96	54.23977	Very low	1
	0.67 – 1.29	82,018	3280.72	14.45893	Low	2
	1.29 – 1.94	100,374	4014.96	17.69491	Moderate	3
	1.94 – 2.59	45,498	1819.92	8.02083	High	4
	2.59 -3.23	31,684	1267.36	5.585564	Very high	5
Soil type	Acrisols	27,717	17,738.88	73.05097	Very high	5
	Nit sols	3576	2288.64	9.424912	High	4
	Fluvisols	3351	2144.64	8.831901	Moderate	3
	LItosols	187	119.68	0.492858	Low	2
	xerosols	3111	1991.04	8.199357	Very low	1
Road distance	0–50	3632	145.28	0.598103	Very high	5
	51–100	3811	152.44	0.62758	High	4
	100–150	3083	123.32	0.507696	Moderate	3
	150–200	3674	146.96	0.60502	Very low	2
	> 200	593,053	23,722.12	97.6616	Low	1
Land use/cover	Forest	99,779	907.76	3.929287	Very low	1
	Rangeland	778,465	7784.65	33.69627	Low	2
	Built up area	36,367	363.67	1.574165	Moderate	3
	Farm Land	1,402,968	14,029.68	60.72821	High	4
	Bare land	1665	16.65	0.07207	Very high	5

NW North West, SE South East, NE North East, N North, S South Source, Reclassified maps

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