CO(2) Flux Estimation by Different Regression Methods from an Alpine Meadow on the Qinghai-Tibetan Plateau

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	CO(2) Flux Estimation by Different Regression Methods from an Alpine Meadow on the Qinghai-Tibetan Plateau
	Jiang, CM; Yu, GR; Cao, GM; Li, YN; Zhang, SC; Fang, HJ
	2010
发表期刊	ADVANCES IN ATMOSPHERIC SCIENCES
ISSN	0256-1530
卷号	27 期号:6 页码:1372-1379
摘要	CO(2) efflux was estimated using different regression methods in static chamber observation from an alpine meadow on the Qinghai-Tibetan Plateau. The CO(2) efflux showed a seasonal pattern, with the maximun flux occurring in the middle of July. The temperature sensitivity of CO(2) efflux (Q (10)) was 3.9, which was at the high end of the range of global values. CO(2) emissions calculated by linear and nonlinear regression were significantly different (p < 0.05). Compared with the linear regression, CO(2) emissions calculated by exponential regression and quadratic regression were 12.7% and 11.2% larger, respectively. However, there were no significant differences in temperature sensitivity values estimated by the three methods. In the entire growing season, the CO(2) efflux estimated by linear regression may be underestimated by up to 25% compared to the real CO(2) efflux. Consequently, great caution should be taken when using published flux data obtained by linear regression of static chamber observations to estimate the regional CO(2) flux in alpine meadows on the Qinghai-Tibetan Plateau.
关键词	Co(2) Emission Static Chamber Technique Nonlinearity Underestimation Qinghai-tibetan Plateau
收录类别	sci
文献类型	期刊论文
条目标识符	http://210.75.249.4/handle/363003/1638
专题	中国科学院西北高原生物研究所
推荐引用方式 GB/T 7714	Jiang, CM,Yu, GR,Cao, GM,et al. CO(2) Flux Estimation by Different Regression Methods from an Alpine Meadow on the Qinghai-Tibetan Plateau[J]. ADVANCES IN ATMOSPHERIC SCIENCES,2010,27(6):1372-1379.
APA	Jiang, CM,Yu, GR,Cao, GM,Li, YN,Zhang, SC,&Fang, HJ.(2010).CO(2) Flux Estimation by Different Regression Methods from an Alpine Meadow on the Qinghai-Tibetan Plateau.ADVANCES IN ATMOSPHERIC SCIENCES,27(6),1372-1379.
MLA	Jiang, CM,et al."CO(2) Flux Estimation by Different Regression Methods from an Alpine Meadow on the Qinghai-Tibetan Plateau".ADVANCES IN ATMOSPHERIC SCIENCES 27.6(2010):1372-1379.