Localized Browning in Thermokarst-Dominated Landscapes Reverses Regional Greening Trends Under a Warming Climate in Northeastern Siberia
文献类型：期刊论文
| 作者 | Wang, Ruixin1,2; Wang, Ping1,2; Xu, Li1,2; Liu, Shiqi1,2; Huang, Qiwei1,2 |
| 刊名 | REMOTE SENSING
 |
| 出版日期 | 2026-01-16 |
| 卷号 | 18期号:2页码:308 |
| 关键词 | Arctic vegetation dynamics climate change permafrost degradation NDVI thermokarst lakes random forest northeastern Siberia |
| DOI | 10.3390/rs18020308 |
| 产权排序 | 1 |
| 文献子类 | Article |
| 英文摘要 | The response of Arctic vegetation to climate warming exhibits pronounced spatial heterogeneity, driven partly by widespread permafrost degradation. However, the role of thermokarst lake development in mediating vegetation-climate interactions remains poorly understood, particularly across heterogeneous landscapes of northeastern Siberia. This study integrated multi-source remote sensing data (2001-2021) with trend analysis, partial correlation, and a Shapley Additive Explanation (SHAP)-interpreted random forest model to examine the drivers of normalized difference vegetation index (NDVI) variability across five levels of thermokarst lake coverage (none, low, moderate, high, very high) and two vegetation types (forest, tundra). The results show that although greening dominates the region, browning is disproportionately observed in areas with high thermokarst lake coverage (>30%), highlighting the localized reversal of regional greening trends under intensified thermokarst activity. Air temperature was identified as the dominant driver of NDVI change, whereas soil temperature and soil moisture exerted secondary but critical influences, especially in tundra ecosystems with extensive thermokarst lake development. The relative importance of these factors shifted across thermokarst lake coverage gradients, underscoring the modulatory effect of thermokarst processes on vegetation-climate feedbacks. These findings emphasize the necessity of incorporating thermokarst dynamics and landscape heterogeneity into predictive models of Arctic vegetation change, with important implications for understanding cryospheric hydrology and ecosystem responses to ongoing climate warming. |
| URL标识 | 查看原文 |
| WOS关键词 | MACHINE LEARNING TECHNIQUES ; LAKE DRAINAGE EVENTS ; SOIL-MOISTURE ; RANDOM FORESTS ; ARCTIC TUNDRA ; DYNAMICS ; VARIABILITY ; SENSITIVITY ; ECOSYSTEMS ; VEGETATION |
| WOS研究方向 | Environmental Sciences & Ecology ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology |
| 语种 | 英语 |
| WOS记录号 | WOS:001672749400001 |
| 出版者 | MDPI |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/221036]  |
| 专题 | 陆地水循环及地表过程院重点实验室_外文论文 |
| 通讯作者 | Wang, Ping |
| 作者单位 | 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China; 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Ruixin,Wang, Ping,Xu, Li,et al. Localized Browning in Thermokarst-Dominated Landscapes Reverses Regional Greening Trends Under a Warming Climate in Northeastern Siberia[J]. REMOTE SENSING,2026,18(2):308. |
| APA | Wang, Ruixin,Wang, Ping,Xu, Li,Liu, Shiqi,&Huang, Qiwei.(2026).Localized Browning in Thermokarst-Dominated Landscapes Reverses Regional Greening Trends Under a Warming Climate in Northeastern Siberia.REMOTE SENSING,18(2),308. |
| MLA | Wang, Ruixin,et al."Localized Browning in Thermokarst-Dominated Landscapes Reverses Regional Greening Trends Under a Warming Climate in Northeastern Siberia".REMOTE SENSING 18.2(2026):308. |
入库方式： OAI收割
来源：地理科学与资源研究所
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