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Outline
This study takes Jinyang county as the research area and integrates 332 Sentinel-1 SAR images from the past six years with multi-temporal optical imagery. Based on the SBAS-InSAR technique, regional landslide hazards were systematically identified and monitored. The results indicate that: 1) Combining InSAR-derived deformation with optical interpretation, and verified by field surveys, 14 landslide hazards were identified. They are mainly distributed along the right bank of the Jinsha river and both banks of the Jinyang river, with slope aspects predominantly facing due east and southeast. 2) In-depth analysis of a typical landslide shows a high consistency between the deformation area detected by InSAR (2018-01-02 to 2023-10-27) and the results from optical interpretation. Deformation is primarily concentrated in the middle part of the slope. Based on deformation rates, the area can be classified into zones of extremely strong, strong, weak, and stable deformation. The cumulative deformation in the extremely strong deformation zone exceeds -490 mm and shows ongoing activity. 3) Landslide deformation exhibits a lagged response to rainfall, and terrain slope is a key factor controlling its deformation pattern. This study can provide direct support for regional landslide risk management and scientific monitoring.
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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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