兰州大学机构库
Northern Hemisphere Greening in Association With Warming Permafrost
Peng, XQ(彭小清)1; Zhang, Tingjun1; Frauenfeld, Oliver W.2; Wang, Shijin3; Qiao, Lina1; Du, Ran1; Mu, Cuicui1
2020-01
Source PublicationJournal of Geophysical Research-Biogeosciences   Impact Factor & Quartile Of Published Year  The Latest Impact Factor & Quartile
ISSN2169-8953
EISSN2169-8961
Volume125Issue:1
page numbers20
AbstractVegetation is closely tied to climate change, hydrological processes, the carbon cycle, and the energy balance. However, in cold regions, both climate and vegetation changes are also closely coupled to permafrost. The association between amplified warming and greening in Northern Hemisphere permafrost regions is not clearly understood. We therefore produce an extended 1982-2015 normalized difference vegetation index record based on concatenated Global Inventory Modeling and Mapping Studies and Moderate-Resolution Imaging Spectroradiometer data to quantify the spatiotemporal patterns of vegetation variability. We also establish spatiotemporal permafrost warming patterns based on a thawing index, active layer thickness, soil temperature, the first thaw date, and thawing days. Next, we establish the association between vegetation and warming permafrost. We find that normalized difference vegetation index increases in approximately 70% of Northern Hemisphere permafrost regions during the growing season (April-October) and in 72% of the region during autumn. Warming permafrost shows a positive relationship with greening. A higher thawing index, greater active layer thickness, higher soil temperature, and also increased precipitation are linked with the observed greening. An earlier first thaw date and an increased number of thawing days also correlate with vegetation greening. These findings underscore the sensitivity of vegetation to warming permafrost. Continued permafrost warming will result in further greening of Northern Hemisphere cold regions (and vice versa), with important implications for the permafrost soil-vegetation-atmosphere carbon cycles, and the water, nutrient, and energy budgets.
PublisherAMER GEOPHYSICAL UNION
DOI10.1029/2019JG005086
Indexed BySCIE
Language英语
Funding ProjectStrategic Priority Research Program of the Chinese Academic Sciences[XDA19070503][XDA20100313] ; National Key R&D Program of China[2019YFA0607003] ; National Natural Science Foundation of China[41801028] ; Applied Basic Research of Qinghai Science and Technology Department[2019-ZJ-7036] ; State Key Laboratory of Frozen Soil Engineering[SKLFSE201707] ; Open Foundation of Research Institute of Qilian Mountains, Lanzhou University[504000-(87080311)]
WOS Research AreaEnvironmental Sciences & Ecology ; Geology
WOS SubjectEnvironmental Sciences ; Geosciences, Multidisciplinary
WOS IDWOS:000538019700005
PublisherAMER GEOPHYSICAL UNION
Original Document TypeArticle
Citation statistics
Document Type期刊论文
Identifierhttps://ir.lzu.edu.cn/handle/262010/406055
Collection兰州大学
资源环境学院
Corresponding AuthorWang, Shijin; Mu, Cuicui
Affiliation
1.Lanzhou Univ, Coll Earth & Environm Sci, Key Lab Western Chinas Environm Syst, Minist Educ, Lanzhou, Peoples R China
2.Texas A&M Univ, Dept Geog, College Stn, TX USA
3.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryospher Sci, Lanzhou, Peoples R China
First Author AffilicationCollege of Earth Environmental Sciences
Corresponding Author AffilicationCollege of Earth Environmental Sciences
First Signature AffilicationCollege of Earth Environmental Sciences
Recommended Citation
GB/T 7714
Peng, Xiaoqing,Zhang, Tingjun,Frauenfeld, Oliver W.,et al. Northern Hemisphere Greening in Association With Warming Permafrost[J]. Journal of Geophysical Research-Biogeosciences,2020,125(1).
APA Peng, Xiaoqing.,Zhang, Tingjun.,Frauenfeld, Oliver W..,Wang, Shijin.,Qiao, Lina.,...&Mu, Cuicui.(2020).Northern Hemisphere Greening in Association With Warming Permafrost.Journal of Geophysical Research-Biogeosciences,125(1).
MLA Peng, Xiaoqing,et al."Northern Hemisphere Greening in Association With Warming Permafrost".Journal of Geophysical Research-Biogeosciences 125.1(2020).
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