GSTDTAP  > 气候变化
DOI10.1088/1748-9326/ab0839
Permafrost response to vegetation greenness variation in the Arctic tundra through positive feedback in surface air temperature and snow cover
Wang, Zhan1; Kim, Yeonjoo1; Seo, Hochoel1; Um, Myoung-Jin2; Mao, Jiafu3,4
2019-04-01
发表期刊ENVIRONMENTAL RESEARCH LETTERS
ISSN1748-9326
出版年2019
卷号14期号:4
文章类型Article
语种英语
国家South Korea; USA
英文摘要

The permafrost response to variations in Arctic vegetation remains controversial. We investigated the consequences of Arctic vegetation greenness variation over the past three decades using a coupled land-atmosphere model and found that it induces air temperature perturbation, which is further amplified by snow cover variation and eventually leaves a footprint on soil temperature. Compared to the atmospheric impacts of vegetation, local shading of vegetation canopy has relatively minor effects on soil temperature. Significant soil warming was observed along the summer snowline between the Low and High Arctic, indicating the direct impact of snow cover variation led by vegetation changes. In the Low Arctic, the winter snowpack insulates the soil from colder air, resulting in less permafrost. In the High Arctic, snow persists for more than 330 d per year and has a strong protection effect on the permafrost as it insulates soil from warmer summer air and reflects solar radiation.


英文关键词arctic vegetation permafrost snow cover
领域气候变化
收录类别SCI-E
WOS记录号WOS:000464504800002
WOS关键词LEAF-AREA INDEX ; CLIMATE-CHANGE ; CO2 FLUX ; FRACTION ; MODEL
WOS类目Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS研究方向Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
引用统计
文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/182043
专题气候变化
作者单位1.Yonsei Univ, Dept Civil & Environm Engn, Seoul 03722, South Korea;
2.Kyonggi Univ, Dept Civil Engn, Suwon 16227, Gyeonggi, South Korea;
3.Oak Ridge Natl Lab, Environm Sci Div, Oak Ridge, TN 37831 USA;
4.Oak Ridge Natl Lab, Climate Change Sci Inst, Oak Ridge, TN 37831 USA
推荐引用方式
GB/T 7714
Wang, Zhan,Kim, Yeonjoo,Seo, Hochoel,et al. Permafrost response to vegetation greenness variation in the Arctic tundra through positive feedback in surface air temperature and snow cover[J]. ENVIRONMENTAL RESEARCH LETTERS,2019,14(4).
APA Wang, Zhan,Kim, Yeonjoo,Seo, Hochoel,Um, Myoung-Jin,&Mao, Jiafu.(2019).Permafrost response to vegetation greenness variation in the Arctic tundra through positive feedback in surface air temperature and snow cover.ENVIRONMENTAL RESEARCH LETTERS,14(4).
MLA Wang, Zhan,et al."Permafrost response to vegetation greenness variation in the Arctic tundra through positive feedback in surface air temperature and snow cover".ENVIRONMENTAL RESEARCH LETTERS 14.4(2019).
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