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Carbon dioxide exchange between the atmosphere and an alpine meadow ecosystem on the Qinghai-Tibetan Plateau, China
Kato, T; Tang, YH; Gu, S; Cui, XY; Hirota, M; Du, MY; Li, YN; Zhao, ZQ; Oikawa, T
2004-07-20
发表期刊AGRICULTURAL AND FOREST METEOROLOGY
卷号124期号:1-2页码:121-134
文章类型Article
摘要We used the eddy covariance method to measure the M exchange between the atmosphere and an alpine meadow ecosystem (37degrees29-45'N, 101degrees12-23'E, 3250m a.s.l.) on the Qinghai-Tibetan Plateau, China in the 2001 and 2002 growing seasons. The maximum rates Of CO2 uptake and release derived from the diurnal course Of CO2 flux (FCO2) were -10.8 and 4.4 mumol m(-2) s(-1), respectively, indicating a relatively high net carbon sequestration potential as compared to subalpine coniferous forest at similar elevation and latitude. The largest daily CO2 uptake was 3.9 g cm(-2) per day on 7 July 2002, which is less than half of those reported for lowland grassland and forest at similar latitudes. The daily CO2 uptake during the measurement period indicated that the alpine ecosystem might behave as a sink of atmospheric M during the growing season if the carbon lost due to grazing is not significant. The daytime CO2 uptake was linearly correlated with the daily photosynthetic photon flux density each month. The nighttime averaged F-CO2 showed a positive exponential correlation with the soil temperature, but apparently negative correlation with the soil water content. (C) 2004 Elsevier B.V. All rights reserved.; We used the eddy covariance method to measure the M exchange between the atmosphere and an alpine meadow ecosystem (37degrees29-45'N, 101degrees12-23'E, 3250m a.s.l.) on the Qinghai-Tibetan Plateau, China in the 2001 and 2002 growing seasons. The maximum rates Of CO2 uptake and release derived from the diurnal course Of CO2 flux (FCO2) were -10.8 and 4.4 mumol m(-2) s(-1), respectively, indicating a relatively high net carbon sequestration potential as compared to subalpine coniferous forest at similar elevation and latitude. The largest daily CO2 uptake was 3.9 g cm(-2) per day on 7 July 2002, which is less than half of those reported for lowland grassland and forest at similar latitudes. The daily CO2 uptake during the measurement period indicated that the alpine ecosystem might behave as a sink of atmospheric M during the growing season if the carbon lost due to grazing is not significant. The daytime CO2 uptake was linearly correlated with the daily photosynthetic photon flux density each month. The nighttime averaged F-CO2 showed a positive exponential correlation with the soil temperature, but apparently negative correlation with the soil water content. (C) 2004 Elsevier B.V. All rights reserved.
关键词Co2 Exchange Ecosystem Respiration Alpine Meadow Tibetan Plateau
WOS标题词Science & Technology ; Life Sciences & Biomedicine ; Physical Sciences
学科领域农业科学
关键词[WOS]GROSS PRIMARY PRODUCTION ; FLUXNET MEASUREMENTS ; TUNDRA ECOSYSTEMS ; WATER-VAPOR ; GRASSLAND ; FOREST ; PRAIRIE ; SINK ; CO2 ; STORAGE
收录类别SCI
语种英语
WOS研究方向Agriculture ; Forestry ; Meteorology & Atmospheric Sciences
WOS类目Agronomy ; Forestry ; Meteorology & Atmospheric Sciences
WOS记录号WOS:000222838100008
引用统计
被引频次:115[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://210.75.249.4/handle/363003/1394
专题中国科学院西北高原生物研究所
作者单位1.Univ Tsukuba, Doctoral Program Biol Sci, Tsukuba, Ibaraki 3058572, Japan
2.Natl Inst Environm Studies, Tsukuba, Ibaraki 3058569, Japan
3.Natl Inst Agroenvironm Sci, Tsukuba, Ibaraki 3058604, Japan
4.Chinese Acad Sci, NW Plateau Inst Biol, Xining, Qing Hai, Peoples R China
5.Univ Tsukuba, Inst Biol Sci, Tsukuba, Ibaraki 3058572, Japan
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GB/T 7714
Kato, T,Tang, YH,Gu, S,et al. Carbon dioxide exchange between the atmosphere and an alpine meadow ecosystem on the Qinghai-Tibetan Plateau, China[J]. AGRICULTURAL AND FOREST METEOROLOGY,2004,124(1-2):121-134.
APA Kato, T.,Tang, YH.,Gu, S.,Cui, XY.,Hirota, M.,...&Oikawa, T.(2004).Carbon dioxide exchange between the atmosphere and an alpine meadow ecosystem on the Qinghai-Tibetan Plateau, China.AGRICULTURAL AND FOREST METEOROLOGY,124(1-2),121-134.
MLA Kato, T,et al."Carbon dioxide exchange between the atmosphere and an alpine meadow ecosystem on the Qinghai-Tibetan Plateau, China".AGRICULTURAL AND FOREST METEOROLOGY 124.1-2(2004):121-134.
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