Comparative study of the net exchange of CO2 in 3 types of vegetation ecosystems on the Qinghai-Tibetan Plateau

	Comparative study of the net exchange of CO2 in 3 types of vegetation ecosystems on the Qinghai-Tibetan Plateau
	Zhao, L ; Li, YN ; Zhao, XQ ; Xu, SX ; Tang, YH ; Yu, GR ; Gu, S ; Du, MY ; Wang, QX
刊名	chinese science bulletin
	2005-08-01
卷号	50 期号:16 页码:1767-1774
关键词	Qinghai-Tibetan Plateau net ecosystem CO2 exchange eddy covariance method
英文摘要	using the eddy covariance method, from 1 july 2003 to 30 june 2004, we conducted the observation and analysis of ecosystem co2 flux in 3 types of alpine meadow vegetation (kobresia humilis, potentilla fruticosa shrub and kobresia tibetica swamp meadows) on the qinghai-tibetan plateau. the results show that the kobresia humilis meadow, the shrub meadow and the swamp meadow's highest co2 uptake rates are 16.78, 10.42 and 16.57 pmol-m(-2)-s(-1) respectively, while their highest co2 release rates are 8.22, 7.73 and 18.67 mu mol-m(-2)-s(-1) respectively. the kobresia humilis meadow and shrub meadow's annual atmospheric uptakes are 282 g co2/m(2) and 53 g co2/m(2), respectively, while swamp meadow's annual atmospheric release is 478 g co2/m(2). this proves that the kobresia humilis meadow and the shrub meadow on the qinghai-tibetan plateau have relatively low potential for co2 uptake and release compared to c4 grasslands, a number of lowland grasslands, and forests. moreover, swamp meadow has relatively high release potential. this, in turn, reveals clear differences in carbon source/sink between different types of vegetation in the qinghai-tibetan plateau alpine meadow ecosystem. these differences are mainly brought by differences in the vegetations' photosynthetic capacity and soil respiration.
WOS标题词	science & technology
类目[WOS]	multidisciplinary sciences
研究领域[WOS]	science & technology - other topics
关键词[WOS]	native tallgrass prairie ; carbon-dioxide ; alpine meadow ; water-vapor ; fluxes ; sink
收录类别	SCI
语种	英语
WOS记录号	WOS:000232609200017
内容类型	期刊论文
源URL	[http://ir.nwipb.ac.cn/handle/363003/6848]
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.Chinese Acad Sci, NW Plateau Inst Biol, Xining 810001, Peoples R China 2.Natl Inst Environm Studies, Tsukuba, Ibaraki 3050053, Japan 3.Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 4.Inst Geog Sci & Nat Resources Res, Tsukuba, Ibaraki 3058604, Japan 5.Natl Inst Agroenvironm Sci, Tsukuba, Ibaraki 3058604, Japan
推荐引用方式 GB/T 7714	Zhao, L,Li, YN,Zhao, XQ,et al. Comparative study of the net exchange of CO2 in 3 types of vegetation ecosystems on the Qinghai-Tibetan Plateau[J]. chinese science bulletin,2005,50(16):1767-1774.
APA	Zhao, L.,Li, YN.,Zhao, XQ.,Xu, SX.,Tang, YH.,...&Wang, QX.(2005).Comparative study of the net exchange of CO2 in 3 types of vegetation ecosystems on the Qinghai-Tibetan Plateau.chinese science bulletin,50(16),1767-1774.
MLA	Zhao, L,et al."Comparative study of the net exchange of CO2 in 3 types of vegetation ecosystems on the Qinghai-Tibetan Plateau".chinese science bulletin 50.16(2005):1767-1774.