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This study integrates the high spatial-resolution monitoring advantages of InSAR with physics-based reduced-order modeling to invert sliding surface parameters. Focusing on the progressive Landslide 5# in Dangchuan, Heifangtai (Gansu province)—a typical loess landslide-prone area—we adapted the fault dislocation model from seismology to develop a novel inversion framework. By incorporating time-series InSAR deformation as surface constraints into the dislocation model, the method progressively inverts sliding surface geometry and position from a geodetic perspective. The results indicate that the sliding surface of the 5# landslide mass is located approximately 4.83±0.3 m beneath the slope surface, with a length of about 136.43±0.5 m, a width of around 47.82±0.3 m, and an aspect of approximately 272°±1.0°. The model inversion achieved a fitting degree of 99%, which is generally consistent with the results of geological surveys and statistical analyses.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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