IMHE OpenIR  > 山地表生过程与生态调控重点实验室
Differences of soil CO2 flux in two contrasting subalpine ecosystems on the eastern edge of the Qinghai-Tibetan Plateau: A four-year study
Duan, Min1; Li, Andi2; Wu, Yanhong2; Zhao, Zuoping3; Peng, Changhui1; DeLuca, Thomas H.4; Sun, Shouqin2
Corresponding AuthorSun, Shouqin(shouqinsun@imde.ac.cn)
2019-02-01
Source PublicationATMOSPHERIC ENVIRONMENT
ISSN1352-2310
Volume198Pages:166-174
AbstractAlpine and subalpine ecosystems on Qinghai-Tibetan Plateau are rich in soil organic carbon and are among the most sensitive regions to climate change, while little is known about the dynamics of soil carbon dioxide (CO2 ) in alpine/subalpine ecosystems except for the grassland on the plateau. In this study, the monthly and inter-annual variations in soil CO2 emission from a subalpine coniferous forest and a subalpine shrubland ecosystem on the eastern edge of the Qinghai-Tibetan Plateau were investigated from 2012 to 2015 using the opaque steady-state chamber method. Soil CO2 flux rate during the growing season ranged from 153.3 to 683.6 mg m(- 2) h(-1) in the coniferous forest, being twice of that (76.6-347.3 mg m(-2) h(-1)) in the shrubland, due to the elevation-induced differences in soil temperature and water content and the vegetation-induced differences in soil carbon and nitrogen pools. Both ecosystems showed large monthly variations in soil CO2 flux rate, while relative to the coniferous forest, the shrubland had a less inter-annual variation in soil CO2 emission. The two ecosystems had the same temperature sensitivity of soil CO2 emission, which suggests that they will respond similarly to global warming concerning soil CO2 flux rate. The results highlight the importance of soil CO2 emission in subalpine forest and shrubland ecosystems, which can be helpful to reduce the uncertainty of regional estimates of carbon budget in subalpine regions under global warming.
KeywordConiferous forest Greenhouse gas emission High elevation Shrubland Subalpine region Temperature sensitivity
DOI10.1016/j.atmosenv.2018.10.067
Indexed BySCI
WOS KeywordINTERANNUAL VARIABILITY ; TEMPERATURE-DEPENDENCE ; LITTER DECOMPOSITION ; N2O EMISSIONS ; FOREST FLOORS ; RESPIRATION ; CARBON ; EXCHANGE ; NET ; PLANT
Language英语
Funding ProjectNational Natural Science Foundation of China[41473078] ; National Natural Science Foundation of China[41273096] ; National Natural Science Foundation of China[41701260] ; Key Laboratory of Mountain Surface Processes and Ecological Regulation, Chinese Academy of Sciences
WOS Research AreaEnvironmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS SubjectEnvironmental Sciences ; Meteorology & Atmospheric Sciences
WOS IDWOS:000455693900016
Funding OrganizationNational Natural Science Foundation of China ; Key Laboratory of Mountain Surface Processes and Ecological Regulation, Chinese Academy of Sciences
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/24292
Collection山地表生过程与生态调控重点实验室
Corresponding AuthorSun, Shouqin
Affiliation1.Northwest A&F Univ, Coll Forestry, Ctr Ecol Forecasting & Global Change, Yangling 712100, Shaanxi, Peoples R China
2.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Surface Processes & Ecol Regulat, Chengdu 610041, Sichuan, Peoples R China
3.Shaanxi Univ Technol, Coll Chem & Environm Sci, Hanzhong 723000, Peoples R China
4.Univ Montana, Coll Forestry & Conservat, Missoula, MT 59812 USA
Recommended Citation
GB/T 7714
Duan, Min,Li, Andi,Wu, Yanhong,et al. Differences of soil CO2 flux in two contrasting subalpine ecosystems on the eastern edge of the Qinghai-Tibetan Plateau: A four-year study[J]. ATMOSPHERIC ENVIRONMENT,2019,198:166-174.
APA Duan, Min.,Li, Andi.,Wu, Yanhong.,Zhao, Zuoping.,Peng, Changhui.,...&Sun, Shouqin.(2019).Differences of soil CO2 flux in two contrasting subalpine ecosystems on the eastern edge of the Qinghai-Tibetan Plateau: A four-year study.ATMOSPHERIC ENVIRONMENT,198,166-174.
MLA Duan, Min,et al."Differences of soil CO2 flux in two contrasting subalpine ecosystems on the eastern edge of the Qinghai-Tibetan Plateau: A four-year study".ATMOSPHERIC ENVIRONMENT 198(2019):166-174.
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