Climate change has further accelerated the degradation of permafrost, posing varying degrees of threats to the stability of population and infrastructure in permafrost regions. Some studies have focused on the potential risks and economic losses caused by permafrost degradation, but these studies are usually limited to specific regions such as the Qinghai Tibet Plateau and Alaska, and the limitations of the spatiotemporal resolution of their input variables have also caused some uncertainty in quantifying permafrost degradation. Based on the thickness of the active layer in permafrost regions with a resolution of 1km; Based on the current data on underground ice content, the settlement index (Is) has been obtained as one of the risk assessment indicators for permafrost regions.
The active layer thickness of 1km in the permafrost region of the northern hemisphere, as well as the volume ice content of permafrost, please refer to Jin et al., 2024 for other relevant data
The calculation method of the subsidence index (Is) is shown in the formula: Is=deta (ALT) * V ice, where is the percentage of relative increase in the thickness of the active layer (relative to the average value of the historical period from 2000 to 2014), and is the underground ice content.
Good data quality
| # | number | name | type |
| 1 | 2022YFF0711700 | National key R & D plan | |
| 2 | 42161160328 | National Natural Science Foundation of China |
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CSTR:11738.11.NCDC.NIEER.DB6391.2024
10.12072/ncdc.nieer.db6391.2024