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Outline
This study proposes an improved DeepLabV3 model for the identification of retrogressive thaw slumps in frozen ground regions. The method integrates the Sobel operator with a boundary-enhanced dual attention (BEDA) module to accurately extract retrogressive thaw slump boundaries; a deformable context pyramid (DCP) module is employed to adapt to retrogressive thaw slumps of varying scales and morphological characteristics. Weighted residual connections are introduced to preserve the original semantic information and enhance detail representation. The dataset of retrogressive thaw slumps was constructed through visual interpretation using SBAS-InSAR surface deformation results, mountain shadow information, and Google Earth imagery. Experimental results show that the overall outputs of the model are closer to the ground truth labels, and the Recall and MIoU of the improved model are increased by 1.59% and 2.09%, respectively, compared with the baseline model.
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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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