Accuracy Improvement of Different Landslide Susceptibility Evaluation Models through K-Means Clustering: A Case Study on China’s Funing County

Table 3

FR and CF values of main geoenvironmental factors.

Factor	Class	Pixel of landslide area	Pixel of land area	No. of landslides	CF	FR
Elevation (m)	<300	5725	107008386	3	−0.54409	0.456
	300–600	126812	878625846	22	0.18953	1.234
	600–900	237722	1303389334	37	0.35969	1.562
	900–1200	105397	1607852060	31	−0.46654	0.533
	1200–1500	124251	1037945379	24	0.06470	1.069
	>1500	14966	329475852	5	−0.61008	0.390
Slope (°)	<6	20754	168668822	6	0.20340	1.255
	6–12	67065	429389363	24	0.37244	1.593
	12–18	160840	664657843	38	0.59499	2.469
	18–24	148191	869210717	29	0.42510	1.739
	24–30	79566	967492857	14	−0.16102	0.839
	>30	39599	2439	11	−0.81341	0.187
Aspect	Flat	0.001	2164877256	0	0.45140	0.000
	North	121727	681323913	19	−0.24817	1.823
	Northeast	49719	674644805	17	0.28069	0.752
	East	91395	670713910	11	−0.13610	1.390
	Southeast	57540	679487707	11	−0.59415	0.864
	South	27133	682006699	16	−0.18622	0.406
	Southwest	51431	644750979	15	−0.01595	0.814
	West	58769	609271722	19	−0.04396	0.984
Plan curvature	Northwest concave	58298	622094683	13	−1.00000	0.956
	Flat	147620	1432499253	59	0.45810	1.100
Profile curvature	Convex concave	289179	2183107637	4	−0.89806	0.873
	Flat	79215	1648689967	59	0.51614	1.308
	Convex	97856	1332324821	66	0.46340	0.967
Land use/land cover	Forest	277270	2368023103	6	−0.93495	0.543
	Shrubs	140888	1563947714	50	0.39332	1.076
	Grass	223991	3109091699	41	0.37406	0.735
	Farmland	34232	418412666	7	−0.26091	1.069
	Bare	44798	427670148	10	0.06946	0.835
	Water wetland	198936	1277565548	60	−0.16068	1.589
NDVI	<−0.01	14057	142372	4	0.99911	1007.270
	−0.01–0	0.001	32421051	0	−1.00000	0.000
	0–0.199	0.001	28562111	0	−1.00000	0.000
	0.199–0.332	4478	80595000	3	−0.43334	0.567
	0.332–0.486	60010	1092287700	23	−0.43965	0.560
	>0.486	447283	3791405700	94	0.16896	1.204
Rainfall (mm)	1258.5–1325.4	4243	147138300	2	−0.70588	0.294
	1325.4–1415.8	0.001	95509800	0	−1.00000	0.000
	1415.8–1504.4	0.001	56240100	0	−1.00000	0.000
	1504.4–1578.5	101171	737706025	21	0.28529	1.399
	1578.5–1648.9	18468	495985350	8	−0.62016	0.380
	1648.9–1719.5	39889	833289100	16	−0.51167	0.488
Distance to rivers (m)	<150	75065	932304625	22	−0.17861	0.821
	150–300	77312	1008728700	16	−0.21812	0.782
	300–450	204109	1256277925	40	0.39672	1.658
	450–600	148837	480505025	20	0.68362	3.160
	600–750	33259	414141875	14	−0.18072	0.819
	>750	105257	402552150	15	0.62518	2.668
Distance to roads (m)	<200	12891	419498800	8	−0.68653	0.313
	200–400	23939	381335150	10	−0.35957	0.640
	400–600	191831	3166316300	55	−0.38194	0.618
	600–800	51296	167787025	14	0.67944	3.119
	800–1000	48262	132295100	8	0.73138	3.722
	>1000	7181	118014050	5	−0.37927	0.621
Distance to faults (m)	<350	7152	110303900	2	−0.33854	0.661
	350–700	45702	103867750	2	0.77730	4.489
	700–1050	356421	4632023900	91	−0.21501	0.785
	1050–1400	141811	875511175	30	0.39487	1.652
	1400–1750	42464	797086675	17	−0.45654	0.543
	>1750	91433	717810800	15	0.23049	1.299
Lithology	Bμt	37334	625224075	8	−0.39085	0.609
	C1d	53146	509542425	10	0.06022	1.064
	C1w	149826	1739116575	42	−0.12111	0.879
	D1b	91229	532358208	23	0.43095	1.748
	D1p	18077	53334396	5	0.71233	3.458
	D2d	10089	157270595	3	−0.34220	0.654
	Dg	1943	88638793	3	−0.99626	0.224
	D2-3d-g	5601	323497263	4	−0.82249	0.177
	Dd	0.001	53564333	0	−1.00000	0.000
	D3g	0.001	33392906	0	−1.00000	0.000
	Dl	16125	190982750	6	−0.13427	0.861
	∈Ob	3779	62603279	1	−0.38103	0.616
	∈2t	0.001	15450820	0	−1.00000	0.000
	∈3b	0.001	11267502	0	−1.00000	0.000
	∈3t	20745	138030501	5	0.35114	1.533
	∈2x	6090	51748427	4	0.17135	1.201
	N	12393	299664642	6	−0.57597	0.422
	O1	2204	96831678	2	−0.76660	0.232
	Pl	33504	73339822	2	0.78660	4.661
	P2yt	0.001	3534531	0	−1.00000	0.000
	P3w	0.001	50151796	0	−1.00000	0.000
	P3l	41458	275334430	8	0.35235	1.536
	Plh	870	94920714	1	−0.90608	0.093
	Tl	0.001	16313937	0	−1.00000	0.000
	T2b	0.001	21592528	0	−1.00000	0.000
		30886	173407581	5	0.45251	1.817
		22250	438413883	7	−0.47964	0.518
		198771	2035479017	65	0.00132	0.996