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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
2005-08-01
发表期刊CHINESE SCIENCE BULLETIN
卷号50期号:16页码:1767-1774
文章类型Article
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.
关键词Qinghai-tibetan Plateau Net Ecosystem Co2 Exchange Eddy Covariance Method
WOS标题词Science & Technology
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研究方向Science & Technology - Other Topics
WOS类目Multidisciplinary Sciences
WOS记录号WOS:000232609200017
引用统计
被引频次:41[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/363003/6848
专题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.
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