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Spatiotemporal Variations in Nitrous Oxide Emissions from an Open Fen on the Qinghai-Tibetan Plateau: a 3-Year Study
Chen, Huai1,2; Wang, Yanfen3; Wu, Ning2,6; Zhu, Dan2; Li, Wei1; Gao, Yongheng4; Zhu, Qiu'an1; Yang, Gang1; Peng, Changhui1,5
Corresponding AuthorWu, Ning
2012-11-01
Source PublicationWATER AIR AND SOIL POLLUTION
ISSN0049-6979
Volume223Issue:9Pages:6025-6034
SubtypeArticle
AbstractTo understand spatial and temporal variations of nitrous oxide (N2O) fluxes, we chose to measure N2O emissions from three plant stands (Kobresia tibetica, Carex muliensis, and Eleocharis valleculosa stands) in an open fen on the northeastern Qinghai-Tibetan plateau during the growing seasons from 2005 to 2007. The overall mean N2O emission rate was about 0.018 +/- 0.056 mgN m(-2)h(-1) during the growing seasons from 2005 to 2007, with highly spatiotemporal variations. The hummock (K. tibetica stand) emitted N2O at the highest rate about 0.025 +/- 0.051 mgNm(-2)h(-1), followed by the hollow stands: the E. valleculosa stand about 0.012 +/- 0.046 mgNm(-2)h(-1) and the C. muliensis stand about 0.017 +/- 0.068 mgNm(-2)h(-1). Within each stand, we also noted significant variations of N2O emission. We also observed the significant seasonal and inter-annual variation of N2O fluxes during the study period. The highest N2O emission rate was all recorded in July or August in each year from 2005 to 2007. Compared with the mean value of 2005, we found the drought of 2006 significantly increased N2O emissions by 104 times in the E. valleculosa stand, 45 times in K. tibetica stand, and 18 times in the C. muliensis stand. Though there was no significant relation between standing water depths and N2O emissions, we still considered it related to the spatiotemporal dynamics of soil water regime under climate change.
KeywordInter-annual Variations Global Change Extreme Climate Events Greenhouse Gases Biogeochemistry
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine ; Physical Sciences
DOI10.1007/s11270-012-1336-9
WOS Subject ExtendedEnvironmental Sciences & Ecology ; Meteorology & Atmospheric Sciences ; Water Resources
Indexed BySCI
WOS KeywordRIPARIAN BUFFER ZONES ; METHANE EMISSIONS ; WATER-TABLE ; BOREAL PEATLANDS ; CONSTRUCTED WETLANDS ; NORTHERN PEATLANDS ; CARBON-DIOXIDE ; N2O FLUXES ; CH4 ; CLIMATE
Language英语
WOS SubjectEnvironmental Sciences ; Meteorology & Atmospheric Sciences ; Water Resources
WOS IDWOS:000310913400040
Funding OrganizationNational Natural Science Foundation of China(31100348) ; Natural Science Foundation Project of CQ CSTC(2009BB7182) ; China QianRen program
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/9915
Collection山地表生过程与生态调控重点实验室
Affiliation1.NW A&F Univ, Lab Ecol Forecasting & Global Change, Yangling 712100, Peoples R China
2.Chinese Acad Sci, Chengdu Inst Biol, Chengdu 610041, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China
5.Univ Quebec, Dept Sci Biol, Inst Sci Environm, Montreal, PQ H2X 3Y7, Canada
6.Int Ctr Integrated Mt Dev, Kathmandu, Nepal
Recommended Citation
GB/T 7714
Chen, Huai,Wang, Yanfen,Wu, Ning,et al. Spatiotemporal Variations in Nitrous Oxide Emissions from an Open Fen on the Qinghai-Tibetan Plateau: a 3-Year Study[J]. WATER AIR AND SOIL POLLUTION,2012,223(9):6025-6034.
APA Chen, Huai.,Wang, Yanfen.,Wu, Ning.,Zhu, Dan.,Li, Wei.,...&Peng, Changhui.(2012).Spatiotemporal Variations in Nitrous Oxide Emissions from an Open Fen on the Qinghai-Tibetan Plateau: a 3-Year Study.WATER AIR AND SOIL POLLUTION,223(9),6025-6034.
MLA Chen, Huai,et al."Spatiotemporal Variations in Nitrous Oxide Emissions from an Open Fen on the Qinghai-Tibetan Plateau: a 3-Year Study".WATER AIR AND SOIL POLLUTION 223.9(2012):6025-6034.
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