A Carbon Flux Assessment Driven by Environmental Factors Over the Tibetan Plateau and Various Permafrost Regions

doi:10.1029/2018JG004789

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所 > 山地表生过程与生态调控重点实验室

	A Carbon Flux Assessment Driven by Environmental Factors Over the Tibetan Plateau and Various Permafrost Regions
	Lin, Shan 1,2; Wang, Genxu1 ; Feng, Jinming 3; Dan, Li 3; Sun, Xiangyang1 ; Hu, Zhaoyong 1; Chen, Xiaopeng 4; Xiao, Xiao 5
刊名	JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
	2019-05-01
卷号	124 期号:5 页码:1132-1147
关键词	carbon cycle Tibetan Plateau permafrost land surface model environmental factors climate change
ISSN号	2169-8953
DOI	10.1029/2018JG004789
通讯作者	Wang, Genxu(wanggx@imde.ac.cn) ; Feng, Jinming(fengjm@tea.ac.cn)
英文摘要	In 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.
资助项目	Major Research Plan of National Natural Science Foundation of China[91547203] ; Chinese Academy of Sciences[QYZDJ-SSW-DQC006]
WOS关键词	NET PRIMARY PRODUCTION ; CLIMATE-CHANGE ; PRIMARY PRODUCTIVITY ; ALPINE GRASSLAND ; ATMOSPHERIC CO2 ; SOIL-MOISTURE ; VEGETATION ; IMPACTS ; DROUGHT ; CHINA
WOS研究方向	Environmental Sciences & Ecology ; Geology
语种	英语
出版者	AMER GEOPHYSICAL UNION
WOS记录号	WOS:000477719600007
资助机构	Major Research Plan of National Natural Science Foundation of China ; Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/26780]
专题	成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室
通讯作者	Wang, Genxu; Feng, Jinming
作者单位	1.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
推荐引用方式 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.