Advances in Civil Engineering / 2021 / Article / Tab 3 / Research Article
GIS-Based Landslide Susceptibility Mapping Using Information, Frequency Ratio, and Artificial Neural Network Methods in Qinghai Province, Northwestern China Table 3 Calculations of IM and FR of various evaluation factors.
Factors Subclass IM FR Elevation 1795–2788 m 0.478 1.321 2788–2970 m 0.673 1.433 2970–3128 m 0.195 1.115 3128–3297 m −0.237 0.876 3297–3491 m −0.398 0.775 3491–3709 m −0.786 0.306 3709–3964 m −1.231 0.205 3964–4243 m −1.432 0.114 4243–4885 m −2.075 0.101 Slope angle 0–6.52° −0.121 0.506 6.53–12.72° 0.265 1.121 12.73–18.26° 0.431 1.045 18.27–23.16° 0.591 1.231 23.17–27.72° 0.375 1.033 27.73–32.29° 0.115 0.897 32.3–37.51° −0.153 0.555 37.52–55.77° −0.271 0.246 55.78–83.17° −0.489 0.387 Slope aspect 0–40° −0.793 0.831 40–80° −0.323 1.031 80–120° 0.051 1.056 120–160° −0.115 0.836 160–200° 0.391 1.154 200–240° 0.105 1.038 240–280° −0.203 1.016 280–320° −0.315 1.114 320–360° −0.256 0.983 Plane curvature −16.38–−5.21 0.135 1.178 −5.21–−1.59 0.003 1.045 −1.58–−0.97 0.106 1.036 −0.96–−0.46 0.117 1.187 −0.45–−0.15 0.786 0.709 −0.14–0.16 1.532 0.778 0.17–0.47 0.975 0.613 0.48–0.99 0.398 1.077 1–9.99 0.449 0.832 Profile curvature −9.46–−1.25 −0.451 0.561 −1.25–−0.62 −0.232 0.876 −0.63–−0.27 0.124 1.139 −0.26–0.09 0.108 0.936 0.1–0.46 0.549 0.787 0.47–0.95 0.938 1.259 0.96–1.69 0.225 1.015 1.7–5.48 −0.331 0.897 5.49–21.78 −0.261 0.732 Stratigraphic lithology Pt1 −2.121 0.325 Pt2 −1.589 0.446 Q1 1.395 1.035 Q2 1.322 1.153 Q3 0.876 1.087 Distance to river 0–333 m 1.231 2.357 333–728 m 1.053 1.753 728–1143 m −0.113 1.156 1143–1559 m −1.452 0.797 1559–2017 m −1.121 0.568 2017–2557 m −1.643 0.321 2557–3202 m −2.152 0.253 3202–4033 m −1.988 0.118 >4033 m −2.223 0.074 Distance to fault 0–1127 m 2.156 3.754 1127–2361 m 1.986 2.531 2361–3595 m 0.993 1.674 3595–4829 m 0.635 1.152 4829–6064 m 0.141 1.041 6064–7405 m −0.241 0.93 7405–8854 m −0.764 0.87 8854–10732 m −1.653 0.551 >10732 m −2.229 0.324 NDVI −0.251–−0.051 1.532 1.986 −0.05–−0.004 2.11 2.321 −0.003–0.020 2.563 3.267 0.021–0.043 0.648 1.323 0.044–0.065 −0.613 0.976 0.066–0.083 −0.787 0.815 0.084–0.1 −0.218 0.693 0.101–0.116 −1.131 0.556 0.117–0.269 −2.153 0.323 TWI 3.51–5.66 −0.881 0.653 5.67–6.67 0.112 1.132 6.68–7.6 0.308 1.512 7.61–8.53 0.235 1.073 8.54–9.61 1.568 3.151 9.62–10.9 1.332 2.312 10.91–12.47 0.863 1.457 12.48–14.62 0.151 1.032 14.63–21.79 0 0 Distance to road 0–382 m 2.132 4.273 382–819 m 0.876 1.182 8191–283 m 0.231 0.998 1283–1774 m −0.115 0.693 1774–2348 m −0.289 0.671 2348–3085 m −0.787 0.773 3085–4068 m −0.563 0.712 4068–5269 m −1.132 0.683 >5269 m −2.225 0.312