气候变化领域集成服务门户(CCPortal): The response of soil CO2 efflux to desertification on alpine meadow in the Qinghai-Tibet Plateau

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DOI	10.1007/s12665-009-0421-x
	The response of soil CO2 efflux to desertification on alpine meadow in the Qinghai-Tibet Plateau
	Zhang, Fang; Wang, Tao; Xue, Xian; Han, Bangshuai; Peng, Fei; You, Quangang
发表日期	2010
ISSN	1866-6280
卷号	60 期号:2
英文摘要	Assessing the global C budget requires a better understanding of the effect of environmental factors on soil CO2 efflux from both experiments and theoretical research, especially in different desertified lands in the Qinghai-Tibet Plateau. Based on the enclosed chamber method, soil CO2 efflux in four different desertified lands and one control [alpine meadow (AM)] were measured in June, August and September, 2008, respectively. Soil CO2 efflux rates at the top, the middle, the bottom of a slope and the flat in front of the slope were obtained at Maduo County. The results showed that average daily soil CO2 efflux rates were 3.72, 2.65, 2.68, 0.59 and 0.37 g m(-2) day(-1) in the AM, lightly (LDL), moderately (MDL), severely (SDL) and very severely desertified lands (VSDL) during the growing season, respectively. Soil CO2 efflux decreased with the change of desertification. The response of soil CO2 efflux to environmental factors was adequately described by the linear model; models accounted for 76, 65, 72, 59 and 71% of the variability on soil CO2 efflux in the AM, LDL, MDL, SDL and VSDL, respectively. Any environmental factor, however, was insufficient to explain the soil CO2 efflux; the common influence could perfectly reflect soil CO2 efflux response to the desertification change.
关键词	Qinghai-Tibet Plateau Soil CO2 efflux Environmental factors Desertification
学科领域	Environmental Sciences & Ecology; Geology; Water Resources
语种	英语
WOS研究方向	Environmental Sciences ; Geosciences, Multidisciplinary ; Water Resources
来源期刊	ENVIRONMENTAL EARTH SCIENCES
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/111593
作者单位	Chinese Acad Sci, Key Lab Desert & Desertificat, Inst Cold & Arid Reg Environm & Engn Res, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Fang,Wang, Tao,Xue, Xian,et al. The response of soil CO2 efflux to desertification on alpine meadow in the Qinghai-Tibet Plateau[J]. 中国科学院西北生态环境资源研究院,2010,60(2).
APA	Zhang, Fang,Wang, Tao,Xue, Xian,Han, Bangshuai,Peng, Fei,&You, Quangang.(2010).The response of soil CO2 efflux to desertification on alpine meadow in the Qinghai-Tibet Plateau.ENVIRONMENTAL EARTH SCIENCES,60(2).
MLA	Zhang, Fang,et al."The response of soil CO2 efflux to desertification on alpine meadow in the Qinghai-Tibet Plateau".ENVIRONMENTAL EARTH SCIENCES 60.2(2010).