Carbon dioxide exchange between the atmosphere and an alpine meadow ecosystem on the Qinghai-Tibetan Plateau, China

	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
刊名	agricultural and forest meteorology
	2004-07-20
卷号	124 期号:1-2 页码:121-134
关键词	CO2 exchange ecosystem respiration alpine meadow Tibetan Plateau
合作状况	其它
中文摘要	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.
英文摘要	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.
学科主题	农业科学
WOS标题词	science & technology ; life sciences & biomedicine ; physical sciences
类目[WOS]	agronomy ; forestry ; meteorology & atmospheric sciences
研究领域[WOS]	agriculture ; forestry ; meteorology & atmospheric sciences
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记录号	WOS:000222838100008
公开日期	2009-12-09
内容类型	期刊论文
源URL	[http://ir.nwipb.ac.cn/handle/363003/1394]
专题	西北高原生物研究所_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.