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A Carbon Flux Assessment Driven by Environmental Factors Over the Tibetan Plateau and Various Permafrost Regions
Lin, Shan1,2; Wang, Genxu1; Feng, Jinming3; Dan, Li3; Sun, Xiangyang1; Hu, Zhaoyong1; Chen, Xiaopeng4; Xiao, Xiao5
Corresponding AuthorWang, Genxu(wanggx@imde.ac.cn) ; Feng, Jinming(fengjm@tea.ac.cn)
2019-05-01
Source PublicationJOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
ISSN2169-8953
Volume124Issue:5Pages:1132-1147
AbstractIn this study, the spatiotemporal changes in net primary production (NPP) and drivers, including climate change, atmospheric CO2 concentration and land use change, over the Tibetan Plateau from 1979 to 2016 were investigated using the version 4.5 of the Community Land Model. Based on high-resolution atmospheric forcing data, six numerical experiments were designed to assess the relative contribution of different environmental factors on NPP. Our simulation results suggest that NPP over the Tibetan Plateau has increased significantly at a rate of 2.25TgC/year(2) since 1979. At the plateau scale, changes in precipitation, CO2 concentration, and land use change contributed approximately 63.3%, 16.7%, and 9.5% to the interannual variation of NPP, respectively. Temperature did not exert a significant effect on the trends of NPP, which results from the increasing temperature enhancing the autotrophic respiration (AR) more than the gross primary production. We also divided the alpine grasslands into four types, including alpine meadow of permafrost, alpine steppe of permafrost, alpine meadow of seasonal frost, and alpine steppe of seasonal frost. We found that the increasing rate of NPP in permafrost regions was significantly higher than that in seasonal frost regions. Compared with other factors, precipitation change played a dominant role in the NPP over the four different types of grasslands. Temperature-induced change on NPP and AR was larger in the alpine meadow regions compared to in the alpine steppe regions. In addition, NPP and AR showed a more remarkable response to temperature change over alpine meadow of permafrost than other regions.
Keywordcarbon cycle Tibetan Plateau permafrost land surface model environmental factors climate change
DOI10.1029/2018JG004789
Indexed BySCI
WOS KeywordNET PRIMARY PRODUCTION ; CLIMATE-CHANGE ; PRIMARY PRODUCTIVITY ; ALPINE GRASSLAND ; ATMOSPHERIC CO2 ; SOIL-MOISTURE ; VEGETATION ; IMPACTS ; DROUGHT ; CHINA
Language英语
Funding ProjectMajor Research Plan of National Natural Science Foundation of China[91547203] ; Chinese Academy of Sciences[QYZDJ-SSW-DQC006]
WOS Research AreaEnvironmental Sciences & Ecology ; Geology
WOS SubjectEnvironmental Sciences ; Geosciences, Multidisciplinary
WOS IDWOS:000477719600007
Funding OrganizationMajor Research Plan of National Natural Science Foundation of China ; Chinese Academy of Sciences
PublisherAMER GEOPHYSICAL UNION
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Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/26780
Collection山地表生过程与生态调控重点实验室
Corresponding AuthorWang, Genxu; Feng, Jinming
Affiliation1.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu, Sichuan, Peoples R China
2.Univ Chinese Acad Sci, Beijing, Peoples R China
3.Chinese Acad Sci, Inst Atmospher Phys, Key Lab Reg Climate Environm Res Temperate East A, Beijing, Peoples R China
4.Shanxi Agr Univ, Coll Anim Sci & Vet Technol, Taigu, Peoples R China
5.Longquanyi Dist Meteorol Serv Chengdu, Chengdu, Sichuan, Peoples R China
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Corresponding Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
Lin, Shan,Wang, Genxu,Feng, Jinming,et al. A Carbon Flux Assessment Driven by Environmental Factors Over the Tibetan Plateau and Various Permafrost Regions[J]. JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES,2019,124(5):1132-1147.
APA Lin, Shan.,Wang, Genxu.,Feng, Jinming.,Dan, Li.,Sun, Xiangyang.,...&Xiao, Xiao.(2019).A Carbon Flux Assessment Driven by Environmental Factors Over the Tibetan Plateau and Various Permafrost Regions.JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES,124(5),1132-1147.
MLA Lin, Shan,et al."A Carbon Flux Assessment Driven by Environmental Factors Over the Tibetan Plateau and Various Permafrost Regions".JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES 124.5(2019):1132-1147.
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