Knowledge Management System of Northwest Institute of Plateau Biology, CAS
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 | |
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 |
推荐引用方式 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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