Table 2.

Correlation between landslides and conditioning factors using the index of entropy (IoE) method.

Conditioning Factor	Classes	Percentage of Domain	Percentage of Landslides	(Pij)	Ij	Wj
Altitude (m)	724–800	0.103	0.000	0.000	0.203	0.168
	800–900	0.779	1.887	0.292
	900–1000	2.705	0.000	0.000
	1000–1100	7.581	6.604	0.105
	1100–1200	14.306	21.698	0.183
	1200–1300	24.928	27.358	0.132
	1300–1400	30.262	21.698	0.086
	1400–1500	17.504	19.811	0.136
	1500–1600	1.733	0.943	0.066
	1600–1661	0.099	0.000	0.000
Slope angle (°)	0–10	22.910	23.585	0.244	0.229	0.162
	10–20	42.375	41.509	0.232
	20–30	27.160	26.415	0.230
	30–40	6.829	8.491	0.294
	40–50	0.700	0.000	0.000
	50–64.67	0.027	0.000	0.000
Slope aspect	Flat	0.028	0.000	0.000	0.095	0.085
	North	11.352	6.604	0.072
	Northeast	13.563	10.377	0.094
	East	14.844	16.038	0.133
	Southeast	11.877	22.642	0.235
	South	10.414	14.151	0.168
	Southwest	12.378	15.094	0.151
	West	13.614	7.547	0.068
	Northwest	11.928	7.547	0.078
Plan curvature	Concave	45.118	34.906	0.240	0.020	0.021
	Plan	8.877	11.321	0.396
	Convex	46.005	53.774	0.363
Profile curvature	Concave	45.281	48.113	0.361	0.002	0.002
	Plan	7.095	6.604	0.316
	Convex	47.624	45.283	0.323
STI	<10	76.576	82.075	0.324	0.345	0.228
	10–20	17.018	12.264	0.218
	20–30	3.726	5.660	0.459
	30–40	1.317	0.000	0.000
	>40	1.363	0.000	0.000
SPI	<10	56.676	59.434	0.223	0.054	0.051
	10–20	19.037	23.585	0.263
	20–30	7.932	2.830	0.076
	30–40	4.124	5.660	0.291
	>40	12.230	8.491	0.147
TWI	<2	56.140	62.264	0.332	0.160	0.107
	2–3	35.052	31.132	0.266
	3–4	6.804	5.660	0.249
	4–5	1.845	0.943	0.153
	>5	0.159	0.000	0.000
Distance to rivers (m)	<200	26.385	28.302	0.219	0.018	0.017
	200–400	22.387	28.302	0.258
	400–600	17.492	19.811	0.231
	600–800	12.379	9.434	0.156
	>800	21.357	14.151	0.135
Distance to roads (m)	<500	16.524	27.358	0.299	0.036	0.040
	500–1000	14.614	20.755	0.257
	1000–1500	12.738	9.434	0.134
	1500–2000	10.994	11.321	0.186
	>2000	45.130	31.132	0.125
NDVI	−0.02–0.23	7.755	16.981	0.288	0.216	0.328
	0.23–0.32	10.093	28.302	0.369
	0.32–0.38	18.757	41.509	0.291
	0.38–0.44	34.724	11.321	0.043
	0.44–0.58	28.672	1.887	0.009
Soil	Fimic Anthrosol	0.328	0.000	0.000	0.436	0.325
	Calcaric Cambisol	82.702	79.245	0.214
	Eutric Cambisol	12.653	14.151	0.250
	Gleyic Cambisol	2.750	6.604	0.536
	Calcaric Regosol	0.377	0.000	0.000
	Eutric Regosol	1.190	0.000	0.000
Land use	Farmland	34.928	65.094	0.282	0.477	0.525
	Forestland	16.617	0.943	0.009
	Grassland	48.185	33.019	0.104
	Water	0.008	0.000	0.000
	Residential areas	0.236	0.943	0.605
	Bareland	0.025	0.000	0.000
Lithology	A	65.720	52.830	0.043	0.239	0.343
	B	0.021	0.000	0.000
	C	5.811	5.660	0.052
	D	0.251	0.943	0.201
	E	3.165	9.434	0.160
	F	7.254	7.547	0.056
	G	2.576	12.264	0.255
	H	0.965	2.830	0.157
	I	0.245	0.000	0.000
	J	8.257	6.604	0.043
	K	3.074	1.887	0.033
	L	2.336	0.000	0.000
	M	0.326	0.000	0.000
Rainfall (mm/yr)	<400	2.041	0.000	0.000	0.210	0.161
	400–500	7.117	6.604	0.303
	500–600	74.158	74.528	0.328
	>600	16.684	18.868	0.369