Table 1. Statistical characteristics of the gullies in the sample areas.
| ID | Center longitude | Center latitude | KD | Elevation (m) | Height difference (m) | ||||
|---|---|---|---|---|---|---|---|---|---|
| Min | Max | Average | Min | Max | Mean | ||||
| S11 | 118.570600 | 48.017998 | 0.000 | 3.524 | 0.149 | 618 | 807 | 716 | 189 |
| S12 | 119.910779 | 46.077695 | 0.000 | 4.067 | 1.093 | 721 | 1262 | 932 | 541 |
| S13 | 121.203409 | 44.684990 | 0.000 | 2.583 | 0.355 | 197 | 560 | 269 | 363 |
| S14 | 122.152479 | 43.657390 | 0.000 | 2.649 | 0.001 | 167 | 224 | 182 | 57 |
| S15 | 123.233768 | 42.607187 | 0.000 | 8.592 | 0.697 | 62 | 431 | 106 | 369 |
| S16 | 124.155689 | 41.681920 | 0.000 | 5.530 | 2.381 | 93 | 856 | 318 | 763 |
| S17 | 125.050768 | 40.855175 | 0.037 | 5.068 | 2.350 | 146 | 1105 | 410 | 959 |
| S21 | 119.293426 | 49.288552 | 0.000 | 2.451 | 0.076 | 579 | 706 | 619 | 127 |
| S22 | 120.706217 | 47.689352 | 0.000 | 2.312 | 0.988 | 888 | 1674 | 1223 | 786 |
| S23 | 122.146670 | 46.261033 | 0.000 | 4.072 | 1.002 | 275 | 508 | 354 | 233 |
| S24 | 123.332692 | 44.989880 | 0.000 | 7.011 | 0.062 | 111 | 162 | 141 | 51 |
| S25 | 124.605923 | 43.859454 | 0.000 | 6.613 | 0.003 | 140 | 290 | 189 | 150 |
| S26 | 125.681803 | 42.922948 | 0.000 | 6.967 | 1.289 | 311 | 655 | 377 | 344 |
| S27 | 126.641308 | 41.929011 | 0.000 | 2.493 | 0.615 | 375 | 1484 | 777 | 1109 |
| S31 | 120.032134 | 50.456997 | 0.000 | 1.826 | 0.411 | 554 | 1032 | 703 | 478 |
| S32 | 121.593975 | 49.243599 | 0.000 | 1.856 | 0.866 | 769 | 1272 | 946 | 503 |
| S33 | 123.194292 | 48.030777 | 0.015 | 5.429 | 1.226 | 200 | 474 | 292 | 274 |
| S34 | 124.751729 | 46.809291 | 0.000 | 0.050 | 0.005 | 130 | 162 | 145 | 32 |
| S35 | 126.244578 | 45.696281 | 0.000 | 1.950 | 0.310 | 102 | 185 | 129 | 83 |
| S36 | 127.528025 | 44.642866 | 0.000 | 2.290 | 0.440 | 194 | 609 | 265 | 415 |
| S37 | 128.644279 | 43.531859 | 0.000 | 5.296 | 0.476 | 349 | 1224 | 666 | 875 |
| S41 | 120.875951 | 51.878845 | 0.003 | 1.322 | 0.550 | 415 | 1150 | 691 | 735 |
| S42 | 122.458809 | 51.004130 | 0.000 | 2.255 | 0.634 | 729 | 1254 | 945 | 525 |
| S43 | 124.181605 | 49.865099 | 0.000 | 2.007 | 0.709 | 295 | 632 | 397 | 337 |
| S44 | 125.843013 | 48.545180 | 0.000 | 4.065 | 0.731 | 221 | 483 | 277 | 262 |
| S45 | 127.557477 | 47.203251 | 0.000 | 5.160 | 0.966 | 176 | 284 | 216 | 108 |
| S46 | 128.934200 | 46.090084 | 0.000 | 5.832 | 0.706 | 92 | 843 | 192 | 751 |
| S47 | 130.269880 | 45.055773 | 0.094 | 5.211 | 1.489 | 269 | 727 | 425 | 458 |
| S52 | 123.348403 | 52.984185 | 0.004 | 1.476 | 0.548 | 336 | 904 | 592 | 568 |
| S53 | 125.102601 | 51.772658 | 0.000 | 1.506 | 0.605 | 365 | 1031 | 620 | 666 |
| S54 | 126.948335 | 50.175165 | 0.000 | 1.206 | 0.334 | 203 | 607 | 390 | 404 |
| S55 | 128.732949 | 48.825058 | 0.000 | 0.500 | 0.068 | 285 | 523 | 403 | 238 |
| S56 | 130.446257 | 47.519862 | 0.000 | 3.653 | 0.508 | 80 | 400 | 150 | 320 |
| S57 | 131.909682 | 46.540431 | 0.000 | 2.783 | 0.304 | 59 | 550 | 115 | 491 |