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CH4 uptake flux of Leymus chinensis steppe during rapid growth season in Inner Mongolia, China
Geng YuanBo1; Luo GuangQiang1,2; Yuan GuoFu1
2010-07-01
Source PublicationSCIENCE CHINA-EARTH SCIENCES
Volume53Issue:7Pages:977-983
AbstractThe influence of near ground atmosphere CH4 concentration, soil water content, soil Eh, plants, soil temperature, and pH on CH4 uptake flux of Leymus chinensis steppe during rapid growth season was studied using field in-situ measurement in Xilin River basin of Inner Mongolia, China. The results showed that CH4 uptake flux was positively correlated with near ground atmosphere CH4 concentration and soil Eh but negatively correlated with soil water content. Precipitation may decrease the CH4 flux by increasing the soil water content. The average fluxes of three treatments during the observation period were 1.52 (natural conditions, 1.51 (aboveground plants were excluded), and 2.00 mg m(-2) d(-1) (all plants were removed), respectively. The difference between the CH4 flux of natural condition treatment and that of removing aboveground plants treatment is small, whereas the flux of removing all plants treatment is larger than the other two treatments. This means that the contribution of aboveground plants to CH4 uptake flux is smaller than that of roots or roots-removing process. CH4 uptake flux is not sensitive to soil temperature and the narrow-ranged soil pH (6.36-7.86). The Leymus chinensis steppe acts as a sink for CH4, and thus more studies should be focused on its affecting factors and related mechanisms.
SubtypeArticle
KeywordCh4 Uptake Flux Leymus Chinensis Steppe Affecting Factors Static Opaque Chamber/gas Chromatography Method
WOS HeadingsScience & Technology ; Physical Sciences
WOS Subject ExtendedGeology
WOS KeywordLANDFILL COVER SOIL ; METHANE OXIDATION ; CARBON-DIOXIDE ; NITROUS-OXIDE ; ENVIRONMENTAL-FACTORS ; ECOSYSTEM ; CO2 ; GRASSLANDS ; EMISSION ; N2O
Indexed BySCI
Language英语
WOS SubjectGeosciences, Multidisciplinary
WOS IDWOS:000279841400005
PublisherSCIENCE PRESS
Citation statistics
Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/67990
Collection中国科学院地理科学与资源研究所
Corresponding AuthorGeng YuanBo
Affiliation1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Geng YuanBo,Luo GuangQiang,Yuan GuoFu. CH4 uptake flux of Leymus chinensis steppe during rapid growth season in Inner Mongolia, China[J]. SCIENCE CHINA-EARTH SCIENCES,2010,53(7):977-983.
APA Geng YuanBo,Luo GuangQiang,&Yuan GuoFu.(2010).CH4 uptake flux of Leymus chinensis steppe during rapid growth season in Inner Mongolia, China.SCIENCE CHINA-EARTH SCIENCES,53(7),977-983.
MLA Geng YuanBo,et al."CH4 uptake flux of Leymus chinensis steppe during rapid growth season in Inner Mongolia, China".SCIENCE CHINA-EARTH SCIENCES 53.7(2010):977-983.
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