The start of frozen dates over northern permafrost regions with the changing climate
文献类型：期刊论文
| 作者 | Li, Jialing; Wu, Chaoyang1,2; Penuelas, Josep3,4; Ran, Youhua5; Zhang, Yongguang6 |
| 刊名 | GLOBAL CHANGE BIOLOGY
 |
| 出版日期 | 2023 |
| 关键词 | climate warming permafrost start of frozen start of thawing |
| ISSN号 | 1354-1013 |
| DOI | 10.1111/gcb.16752 |
| 文献子类 | Article ; Early Access |
| 英文摘要 | The soil freeze-thaw cycle in the permafrost regions has a significant impact on regional surface energy and water balance. Although increasing efforts have been made to understand the responses of spring thawing to climate change, the mechanisms controlling the global interannual variability of the start date of permafrost frozen (SOF) remain unclear. Using long-term SOF from the combinations of multiple satellite microwave sensors between 1979 and 2020, and analytical techniques, including partial correlation, ridge regression, path analysis, and machine learning, we explored the responses of SOF to multiple climate change factors, including warming (surface and air temperature), start date of permafrost thawing (SOT), soil properties (soil temperature and volume of water), and the snow depth water equivalent (SDWE). Overall, climate warming exhibited the maximum control on SOF, but SOT in spring was also an important driver of SOF variability; among the 65.9% significant SOT and SOF correlations, 79.3% were positive, indicating an overall earlier thawing would contribute to an earlier frozen in winter. The machine learning analysis also suggested that apart from warming, SOT ranked as the second most important determinant of SOF. Therefore, we identified the mechanism responsible for the SOT-SOF relationship using the SEM analysis, which revealed that soil temperature change exhibited the maximum effect on this relationship, irrespective of the permafrost type. Finally, we analyzed the temporal changes in these responses using the moving window approach and found increased effect of soil warming on SOF. In conclusion, these results provide important insights into understanding and predicting SOF variations with future climate change. |
| 学科主题 | Biodiversity & Conservation ; Environmental Sciences & Ecology |
| WOS关键词 | ACTIVE-LAYER THICKNESS ; CARBON ; VEGETATION ; DYNAMICS |
| 语种 | 英语 |
| 出版者 | WILEY |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/193426]  |
| 专题 | 陆地表层格局与模拟院重点实验室_外文论文 |
| 作者单位 | 1.Nanjing Univ, Int Inst Earth Syst Sci, Jiangsu Ctr Collaborat Innovat Geog Informat Resou, Nanjing, Peoples R China 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China 3.Univ Chinese Acad Sci, Beijing, Peoples R China 4.CSIC, Global Ecol Unit CREAF CSIC UAB, Barcelona, Catalonia, Spain 5.CREAF, Barcelona, Catalonia, Spain 6.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Lanzhou, Peoples R China 7.Nanjing Univ, Sch Geog & Ocean Sci, Jiangsu Prov Key Lab Geog Informat Sci & Technol, Key Lab Land Satellite Remote Sensing Applicat Min, Nanjing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Jialing,Wu, Chaoyang,Penuelas, Josep,et al. The start of frozen dates over northern permafrost regions with the changing climate[J]. GLOBAL CHANGE BIOLOGY,2023. |
| APA | Li, Jialing,Wu, Chaoyang,Penuelas, Josep,Ran, Youhua,&Zhang, Yongguang.(2023).The start of frozen dates over northern permafrost regions with the changing climate.GLOBAL CHANGE BIOLOGY. |
| MLA | Li, Jialing,et al."The start of frozen dates over northern permafrost regions with the changing climate".GLOBAL CHANGE BIOLOGY (2023). |
入库方式： OAI收割
来源：地理科学与资源研究所
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