兰州大学机构库
Effect of permafrost degradation on carbon sequestration of alpine ecosystems
Chen, Sheng-Yun1,2,4; Wei, Pei-Jie1,5; Wu, Tong-Hua1; Wu, Qing-Bai3; Luo, Fan-Di2
2023-11-15
Online publication date2023-07
Source PublicationSCIENCE OF THE TOTAL ENVIRONMENT   Impact Factor & Quartile
ISSN0048-9697
Volume899
page numbers11
AbstractPermafrost degradation profoundly affects carbon storage in alpine ecosystems, and the response characteristics of carbon sequestration are likely to differ at the different stages of permafrost degradation. Furthermore, the sensitivity of different stages of permafrost degradation to climate change is likely to vary. However, related research is lacking so far on the Qinghai-Tibetan Plateau (QTP). To investigate these issues, the Shule River headwaters on the northeastern margin of the QTP was selected. We applied InVEST and Noah-MP land surface models in combination with remote sensing and field survey data to reveal the dynamics of different carbon (vegetation carbon, soil organic carbon (SOC), and ecosystem carbon) pools from 2001 to 2020. A space-for-time analysis was used to explore the response characteristics of carbon sequestration along a gradient of permafrost degradation, ranging from lightly degraded permafrost (H-SP) to severely degraded permafrost (U-EUP), and to analyze the sensitivity of the permafrost degradation gradient to climate change. Our results showed that: (1) the sensitivity of mean annual ground temperature (MAGT) to climatic variables in the U-EUP was stronger than that in the H-SP and S-TP, respectively; (2) rising MAGT led to permafrost degradation, but increasing annual precipitation promoted permafrost conservation; (3) vegetation carbon, SOC, and ecosystem carbon had similar spatial distribution patterns, with their storage decreasing from the mountain area to the valley; (4) alpine ecosystems acted as carbon sinks with the rate of 0.34 Mgha−1a−1 during 2001–2020, of which vegetation carbon and SOC accumulations accounted for 10.65 % and 89.35 %, respectively; and (5) the effects of permafrost degradation from H-SP to U-EUP on carbon density changed from promotion to inhibition. © 2023
KeywordClimate change Digital storage Organic carbon Permafrost Remote sensing Vegetation Alpine ecosystem Carbon sequestration Climatic variables Permafrost degradation Qinghai-Tibetan plateau Soil organic carbon Spatial temporals Spatial-temporal pattern Temporal pattern The qinghai-tibetan plateau
PublisherElsevier B.V.
DOI10.1016/j.scitotenv.2023.165642
Indexed ByEI ; SCIE
Language英语
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
WOS IDWOS:001047269600001
EI Accession Number20233014442928
EI KeywordsEcosystems
EI Classification Number443.1 Atmospheric Properties ; 454.3 Ecology and Ecosystems ; 722.1 Data Storage, Equipment and Techniques ; 804.1 Organic Compounds
Original Document TypeJournal article (JA)
PMID 37478943
Citation statistics
Document Type期刊论文
Identifierhttps://ir.lzu.edu.cn/handle/262010/532118
Collection兰州大学
生态学院
Corresponding AuthorChen, Sheng-Yun
Affiliation
1.Cryosphere and Eco-Environment Research Station of Shule River Headwaters, State Key Laboratory of Cryospheric Science, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou; 730000, China;
2.College of Ecology, Lanzhou University, Lanzhou; 730000, China;
3.State Key Laboratory of Frozen Soil Engineering, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou; 730000, China;
4.Key Laboratory of Biodiversity Formation Mechanism and Comprehensive Utilization of the Qinghai-Tibet Plateau in Qinghai Province, Qinghai Normal University, Xining; 810008, China;
5.University of Chinese Academy of Sciences, Beijing; 100049, China
First Author AffilicationCollege of Ecology, Lanzhou University
Corresponding Author AffilicationCollege of Ecology, Lanzhou University
Recommended Citation
GB/T 7714
Chen, Sheng-Yun,Wei, Pei-Jie,Wu, Tong-Hua,et al. Effect of permafrost degradation on carbon sequestration of alpine ecosystems[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2023,899.
APA Chen, Sheng-Yun,Wei, Pei-Jie,Wu, Tong-Hua,Wu, Qing-Bai,&Luo, Fan-Di.(2023).Effect of permafrost degradation on carbon sequestration of alpine ecosystems.SCIENCE OF THE TOTAL ENVIRONMENT,899.
MLA Chen, Sheng-Yun,et al."Effect of permafrost degradation on carbon sequestration of alpine ecosystems".SCIENCE OF THE TOTAL ENVIRONMENT 899(2023).
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