Diurnal and monthly variations of carbon dioxide flux in an alpine shrub on the Qinghai-Tibet Plateau

NWIPB OpenIR

	Diurnal and monthly variations of carbon dioxide flux in an alpine shrub on the Qinghai-Tibet Plateau
	Xu, SX ; Zhao, XQ ; Li, YN ; Zhao, L ; Yu, GR ; Sun, XM ; Cao, GM
	2005-03-01
发表期刊	CHINESE SCIENCE BULLETIN
卷号	50 期号:6 页码:539-543
文章类型	Article
摘要	Continuous CO2 flux observation with eddy covariance method conducted in the alpine shrub on the Qinghai-Tibet Plateau indicates that there are distinct diurnal and monthly variations for CO2 fluxes in the alpine shrub on the plateau. As for diurnal variation, with net CO2 influx from 08:00 to 19:00 and net CO2 efflux from 20:00 to 07:00, peak CO2 flux during warm season (July) appears around 12:00 (-1.19 g CO2 (.) m(-2) (.) h(-1)); there is no obvious horary fluctuation for CO2 flux during cold season (January), and horary CO2 flux during most hours in a day is close to zero except for a small amount of net efflux (about 0.11 g CO2 (.) m(-2) (.) h(-1)) from 11:00-17:00. As for monthly variation, with net CO2 influx from June to September and net CO2 efflux from January to May and October to December, the peak monthly CO2 influx and CO2 efflux appear in August and April, respectively. The total net CO2 influx from June to September and total net CO2 efflux from February to May and October to December in the alpine shrub on the Qinghai-Tibet Plateau are estimated to be 673 and 446 g CO2 (.) m(-2). Results show that the alpine shrub on the Qinghai-Tibet Plateau is remarkable carbon dioxide sink under no grazing conditions and the total yearly CO2 influx is estimated to be 227 9 CO2 (.) m(-2).
关键词	Alpine Shrub Carbon Dioxide Flux Diurnal Variation Monthly Variation
WOS标题词	Science & Technology
关键词[WOS]	TEMPERATE GRASSLAND ; PRAIRIE ; SOIL ; NORTHERN ; STORAGE ; PLAINS ; CO2
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:000229233200009
引用统计	被引频次：5[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/363003/6846
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 Inst Plateau Biol, Zining 810001, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100136, Peoples R China 3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
推荐引用方式 GB/T 7714	Xu, SX,Zhao, XQ,Li, YN,et al. Diurnal and monthly variations of carbon dioxide flux in an alpine shrub on the Qinghai-Tibet Plateau[J]. CHINESE SCIENCE BULLETIN,2005,50(6):539-543.
APA	Xu, SX.,Zhao, XQ.,Li, YN.,Zhao, L.,Yu, GR.,...&Cao, GM.(2005).Diurnal and monthly variations of carbon dioxide flux in an alpine shrub on the Qinghai-Tibet Plateau.CHINESE SCIENCE BULLETIN,50(6),539-543.
MLA	Xu, SX,et al."Diurnal and monthly variations of carbon dioxide flux in an alpine shrub on the Qinghai-Tibet Plateau".CHINESE SCIENCE BULLETIN 50.6(2005):539-543.