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Strong temperature dependence and no moss photosynthesis in winter CO2 flux for a Kobresia meadow on the Qinghai-Tibetan plateau
Kato, T; Hirota, M; Tang, YH; Cui, XY; Li, YN; Zhao, XQ; Oikawa, T
2005-10-01
Source PublicationSOIL BIOLOGY & BIOCHEMISTRY
Volume37Issue:10Pages:1966-1969
SubtypeArticle
AbstractWe examined the CO2 exchange of a Kobresia meadow ecosystem on the Qinghai-Tibetan plateau using a chamber system. CO2 efflux from the ecosystem was strongly dependence on soil surface temperature. The COZ efflux-temperature relationship was identical under both light and dark conditions, indicating that no photosynthesis could be detected under light conditions during the measurement period. The temperature sensitivity (Q(10)) of the COZ efflux showed a marked transition around -1.0 degrees C; Q(10) was 2.14 at soil surface temperatures above and equal to -1.0 degrees C but was 15.3 at temperatures below -1.0 degrees C. Our findings suggest that soil surface temperature was the major factor controlling winter COZ flux for the alpine meadow ecosystem and that freeze-thaw cycles at the soil surface layer play an important role in the temperature dependence of winter CO2 flux. (c) 2005 Elsevier Ltd. All rights reserved.; We examined the CO2 exchange of a Kobresia meadow ecosystem on the Qinghai-Tibetan plateau using a chamber system. CO2 efflux from the ecosystem was strongly dependence on soil surface temperature. The COZ efflux-temperature relationship was identical under both light and dark conditions, indicating that no photosynthesis could be detected under light conditions during the measurement period. The temperature sensitivity (Q(10)) of the COZ efflux showed a marked transition around -1.0 degrees C; Q(10) was 2.14 at soil surface temperatures above and equal to -1.0 degrees C but was 15.3 at temperatures below -1.0 degrees C. Our findings suggest that soil surface temperature was the major factor controlling winter COZ flux for the alpine meadow ecosystem and that freeze-thaw cycles at the soil surface layer play an important role in the temperature dependence of winter CO2 flux. (c) 2005 Elsevier Ltd. All rights reserved.
KeywordCo2 Gas Diffusion Freeze-thaw Cycles Microbial Respiration Moss Photosynthesis Spatial Variability
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
Subject Area生物科学
WOS KeywordECOSYSTEM ; RESPIRATION ; SOIL
Indexed BySCI
Language英语
WOS Research AreaAgriculture
WOS SubjectSoil Science
WOS IDWOS:000231522500026
Citation statistics
Cited Times:21[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://210.75.249.4/handle/363003/1362
Collection中国科学院西北高原生物研究所
Affiliation1.Japan Agcy Marine Earth Sci & Technol, Frontier Res Ctr Global Change, Ecosyst Change Res Program, Yokohama, Kanagawa 236001, Japan
2.Natl Inst Environm Studies, Tsukuba, Ibaraki 3058506, Japan
3.Chinese Acad Sci, Grad Sch, Yuanquanlu 100091, Peoples R China
4.Chinese Acad Sci, NW Plateau Inst Biol, Xining 810001, Qinghai, Peoples R China
5.Univ Tsukuba, Inst Biol Sci, Tsukuba, Ibaraki 3058572, Japan
Recommended Citation
GB/T 7714
Kato, T,Hirota, M,Tang, YH,et al. Strong temperature dependence and no moss photosynthesis in winter CO2 flux for a Kobresia meadow on the Qinghai-Tibetan plateau[J]. SOIL BIOLOGY & BIOCHEMISTRY,2005,37(10):1966-1969.
APA Kato, T.,Hirota, M.,Tang, YH.,Cui, XY.,Li, YN.,...&Oikawa, T.(2005).Strong temperature dependence and no moss photosynthesis in winter CO2 flux for a Kobresia meadow on the Qinghai-Tibetan plateau.SOIL BIOLOGY & BIOCHEMISTRY,37(10),1966-1969.
MLA Kato, T,et al."Strong temperature dependence and no moss photosynthesis in winter CO2 flux for a Kobresia meadow on the Qinghai-Tibetan plateau".SOIL BIOLOGY & BIOCHEMISTRY 37.10(2005):1966-1969.
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