Table 2 Description and frequency ratio (FR) of remote sensing - derived index and hydrological factors in the study area
Factors | Values | No. of Landslides | FR | Factors | Values | No. of Landslides | FR |
|---|---|---|---|---|---|---|---|
NDVI | −0.242 - 0.143 | 15 | 7.26 | SPI | −13.816 - (−8.806) | 3 | 0.65 |
0.144–0.255 | 19 | 3.15 |  | −8.805 - (−4.352) | 14 | 0.83 | |
0.256–0.332 | 30 | 1.40 |  | −4.351 - 0.101 | 20 | 0.76 | |
0.333–0.391 | 26 | 0.75 |  | 0.102–2.773 | 46 | 1.28 | |
0.392–0.650 | 0 | 0 |  | 2.774–14.574 | 7 | 1.04 | |
NDWI | −0.324 - 0.046 | 1 | 0.22 | TWI | −7.969 - (−2.240) | 17 | 0.82 |
0.047–0.125 | 22 | 2.19 |  | −2.239 - 2.114 | 23 | 0.75 | |
0.126–0.179 | 36 | 1.75 |  | 2.115–4.520 | 38 | 1.43 | |
0.180–0.223 | 25 | 0.79 |  | 4.521–8.416 | 12 | 1.22 | |
0.224–0.483 | 6 | 0.26 |  | 8.417–21.250 | 0 | 0 | |
BI | 0.248–0.312 | 4 | 0.86 | Rainfall (mm) | 1338.5–1424 | 13 | 0.54 |
0.313–0.322 | 10 | 0.45 | (from May to Oct. in 2013) | 1424.1–1528.5 | 5 | 0.36 | |
0.323–0.329 | 33 | 0.97 |  | 1528.6–1633 | 2 | 0.17 | |
0.330–0.339 | 34 | 1.50 |  | 1633.1–1718.5 | 47 | 1.69 | |
0.340–0.436 | 9 | 1.41 |  | 1718.6–1823 | 23 | 1.82 |