气候变化领域集成服务门户(CCPortal): The influence of degradation of the swamp and alpine meadows on CH4 and CO2 fluxes on the Qinghai-Tibetan Plateau

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DOI	10.1007/s12665-009-0193-3
	The influence of degradation of the swamp and alpine meadows on CH4 and CO2 fluxes on the Qinghai-Tibetan Plateau
	Wang, Junfeng; Wang, Genxu; Hu, Hongchang; Wu, Qingbai
发表日期	2010
ISSN	1866-6280
EISSN	1866-6299
起始页码	537
结束页码	548
卷号	60 期号:3
英文摘要	CH4 and CO2 fluxes from a high-cold swamp meadow and an alpine meadow on the Qinghai- Tibetan Plateau, subject to different degrees of degradation, were measured over a 12-month period. Air temperature, soil temperature and moisture, and the depths of the water table and thawing-freezing layer were determined. For swamp meadows, the greater the degradation, the lesser the carbon efflux. CH4 emissions at the nondegraded swamp meadow site were 1.09-3.5 and 2.5-11.27 times greater, and CO2 emissions 1.08-1.69 and 1.41-4.43 times greater, respectively, than those from moderately and severely degraded sites. For alpine meadows, the greater the degradation, the greater the CH4 consumption and CO2 emissions. CH4 consumption at the severely degraded alpine meadow site was 6.6-21 and 1.1-5.25 times greater, and CO2 emissions 1.05-78.5 and 1.04-6.28 times greater, respectively, than those from the nondegraded and moderately degraded sites. The CH4 and CO2 fluxes at both sites were significantly correlated (R-2 > 0.59, P < 0.05) with air temperature, soil temperature, and topsoil (0-5 cm depth) moisture, indicating these to be the main environmental factors affecting such fluxes.
英文关键词	Carbon flux; CH4 CO2; Degradation; Swamp meadow; Alpine meadow Qinghai-Tibetan Plateau
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Water Resources
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary ; Water Resources
WOS关键词	GREENHOUSE GASES ; HEADWATERS AREA ; CARBON-DIOXIDE ; METHANE ; CONSUMPTION ; ECOSYSTEMS ; RIVER
WOS记录号	WOS:000276637100008
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/240274
作者单位	[Wang, Junfeng; Wu, Qingbai] Chinese Acad Sci, State Key Lab Frozen Soil Engn, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China; [Wang, Genxu] Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China; [Wang, Genxu; Hu, Hongchang] Lanzhou Univ, Coll Resources & Environm Sci, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Wang, Junfeng,Wang, Genxu,Hu, Hongchang,et al. The influence of degradation of the swamp and alpine meadows on CH4 and CO2 fluxes on the Qinghai-Tibetan Plateau[J]. 中国科学院西北生态环境资源研究院,2010,60(3).
APA	Wang, Junfeng,Wang, Genxu,Hu, Hongchang,&Wu, Qingbai.(2010).The influence of degradation of the swamp and alpine meadows on CH4 and CO2 fluxes on the Qinghai-Tibetan Plateau.ENVIRONMENTAL EARTH SCIENCES,60(3).
MLA	Wang, Junfeng,et al."The influence of degradation of the swamp and alpine meadows on CH4 and CO2 fluxes on the Qinghai-Tibetan Plateau".ENVIRONMENTAL EARTH SCIENCES 60.3(2010).