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| Content Provider | Directory of Open Access Journals (DOAJ) |
|---|---|
| Author | Minghao Liu Jing Luo Guoan Yin Fujun Niu Zhanju Lin |
| Abstract | Permafrost is degrading on the Qinghai-Tibet Plateau (QTP) due to climate change. Permafrost degradation can result in ecosystem changes and damage to infrastructure. However, we lack baseline data related to permafrost thermal dynamics at a local scale. Here, we model climate change impacts on permafrost from 1986 to 2075 at a high resolution using a numerical model for the Beiluhe basin, which includes representative permafrost environments of the QTP. Ground surface temperatures are derived from air temperature using an n-factor vs Normalized Differential Vegetation Index (NDVI) relationship. Soil properties are defined by field measurements and ecosystem types. The climate projections are based on long-term observations. The modelled ground temperature (MAGT) and active-layer thickness (ALT) are close to in situ observations. The results show a discontinuous permafrost distribution (61.4%) in the Beiluhe basin at present. For the past 30 years, the permafrost area has decreased rapidly, by a total of 26%. The mean ALT has increased by 0.46 m. For the next 60 years, 8.5−35% of the permafrost area is likely to degrade under different trends of climate warming. The ALT will probably increase by 0.38−0.86 m. The results of this study are useful for developing a deeper understanding of ecosystem change, permafrost development, and infrastructure development on the QTP. |
| e-ISSN | 20724292 |
| DOI | 10.3390/rs11111294 |
| Journal | Remote Sensing |
| Issue Number | 11 |
| Volume Number | 11 |
| Language | English |
| Publisher | MDPI AG |
| Publisher Date | 2019-05-01 |
| Publisher Place | Switzerland |
| Access Restriction | Open |
| Subject Keyword | Science Permafrost Model Climate Change Permafrost Distribution Remote Sensing Qinghai-tibet Plateau |
| Content Type | Text |
| Resource Type | Article |
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