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The combined effects of warming and drying suppress CO2 and N2O emission rates in an alpine meadow of the eastern Tibetan Plateau

文献类型：期刊论文

作者Shi, Fusun1; Chen, Huai2; Chen, Huafeng3; Wu, Yan1; Wu, Ning1
刊名ECOLOGICAL RESEARCH
出版日期2012-07
卷号27期号:4页码:725-733
关键词Warming Drying CO2 N2O Eastern Tibetan Plateau
ISSN号0912-3814
DOI10.1007/s11284-012-0950-8
产权排序1
文献子类Article
英文摘要The eastern Tibetan Plateau has become increasingly warmer and drier since the 1990s. Such warming and drying has a great impact on ecosystem processes on the eastern Tibetan Plateau. To determine their combined effects on CO2 and N2O emission rates, we conducted a field manipulative experiment in an alpine meadow of the eastern Tibetan Plateau during the growing season of 2009. The experiment showed that warming manipulation increased soil temperature by 1 A degrees C, and drying manipulation decreased soil water content by 6.8 %. We found that by counteracting the effect of low temperature in the area, experimental warming significantly increased soil microbial biomass, the number of bacteria, fungi, actinomycetes, ammonifying bacteria, nitrobacteria and denitrifying bacteria, and facilitated the emission rates of CO2 and N2O by 33.4 and 31.5 %, respectively. However, decreased precipitation further aggravated soil water stress and inhibited the numbers of these organisms, and reduced the emission rates of CO2 and N2O by 47.4 and 37.9 %, respectively. So decreased soil water content tended to offset the positive effect of warming. Compared to the positive effects of warming, decreased soil water content was shown in our study to have even greater impact on the eastern Tibetan Plateau during the growing season. Therefore, inhibition of CO2 and N2O emission rates (32.3 and 29.3 %, respectively) by warming and drying will intensify if the combined effects of these climatic trends persist in the region.
学科主题Environment ; Ecology
URL标识查看原文
WOS关键词SOIL RESPIRATION ; CARBON-DIOXIDE ; CLIMATE-CHANGE ; NITROUS-OXIDE ; COMMUNITY STRUCTURE ; TALLGRASS PRAIRIE ; METHANE FLUXES ; ECOSYSTEM ; FOREST ; GRASSLAND
WOS研究方向Environmental Sciences & Ecology
语种英语
WOS记录号WOS:000306845600007
出版者SPRINGER JAPAN KK
源URL[http://210.75.237.14/handle/351003/29840]  
专题生物多样性与生态系统服务领域_生态研究
成都生物研究所_生态研究
通讯作者Wu, Ning
作者单位1.Chinese Acad Sci, Chengdu Inst Biol, Chengdu 610041, Peoples R China;
2.NW Agr & Forest Univ, Coll Forestry, Lab Ecol Forecasting & Global Change, Yanglin 712100, Peoples R China;
3.NE Forestry Univ, Minist Educ, Key Lab Forest Plant Ecol, Harbin 150040, Peoples R China
推荐引用方式
GB/T 7714		 Shi, Fusun,Chen, Huai,Chen, Huafeng,et al. The combined effects of warming and drying suppress CO2 and N2O emission rates in an alpine meadow of the eastern Tibetan Plateau[J]. ECOLOGICAL RESEARCH,2012,27(4):725-733.
APA Shi, Fusun,Chen, Huai,Chen, Huafeng,Wu, Yan,&Wu, Ning.(2012).The combined effects of warming and drying suppress CO2 and N2O emission rates in an alpine meadow of the eastern Tibetan Plateau.ECOLOGICAL RESEARCH,27(4),725-733.
MLA Shi, Fusun,et al."The combined effects of warming and drying suppress CO2 and N2O emission rates in an alpine meadow of the eastern Tibetan Plateau".ECOLOGICAL RESEARCH 27.4(2012):725-733.

入库方式： OAI收割

来源：成都生物研究所

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