The new permafrost map of the northern hemisphere uses a rule-based GIS model to integrate the new permafrost range, climate conditions, vegetation structure, soil and topographic conditions, as well as ice rich and organic matter rich permafrost map (yedoma). Different from the previous permafrost map, according to the complex interaction between permafrost and climate and ecosystem, we divide the permafrost in the northern hemisphere into five types: climate driven, climate driven / ecosystem modification, climate driven / ecosystem protection, ecosystem driven and ecosystem protection. Excluding glaciers and lakes, the areas of these five types in the northern hemisphere are 3.66 respectively × 106km²、 eight point zero six × 106km²、 zero point six two × 106km²、 five point seven nine × 106km² And 1.63 × 106km²。 81% of the permafrost areas in the northern hemisphere are transformed, driven or protected by ecosystems, indicating that ecosystems play a leading role in the stability of permafrost in the northern hemisphere. Climate driven permafrost accounts for only 19% of the permafrost area in the northern hemisphere, mainly distributed in high Arctic and alpine areas, such as the Qinghai Tibet Plateau.
The permafrost range is derived from the newly developed 1 km resolution permafrost range in the northern hemisphere (ran et al., 2022); the data of climatic conditions, vegetation structure, soil and topographic conditions, ice rich and organic matter rich permafrost map (yedoma) are derived from the mainstream database. For details, see the paper (ran et al., 2021).
Based on the rule-based GIS decision-making method, the world's first biophysical zoning map of permafrost considering climate ecosystem sensitivity is produced by integrating the current new permafrost range, climate conditions, vegetation structure, soil and topographic conditions, as well as ice rich and organic matter rich permafrost maps.
The data quality is good.
| # | number | name | type |
| 1 | XDA19070204 | Strategy Priority Research Program (Category A) of Chinese Academy of Sciences |
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CSTR:11738.11.ncdc.NIEER.db2500.2022
10.11888/Geocry.tpdc.271659