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Nitrous Oxide Emission Rates over 10 Years in an Alpine Meadow on the Tibetan Plateau
Cao Yingfang1,2; Ke Xun1,2; Guo Xiaowei1; Cao Guangmin1; Du Yangong1
2018
Source PublicationPOLISH JOURNAL OF ENVIRONMENTAL STUDIES
Volume27Issue:3Pages:1353-1358
SubtypeArticle
AbstractThe alpine grassland ecosystem covering about 85% of the Tibetan plateau is fragile and sensitive to natural and anthropogenic disturbances. However, it is unclear how nitrous oxide (N2O) has varied over the last 10 years. In order to accurately estimate the regional N2O emissions budget, the N2O levels, environmental factors, and biomass were investigated on a yearly, monthly, and seasonal basis from 2000 to 2014 in an alpine meadow. The results showed that there was an overall declining trend in emissions over 10 years, during which the two maximum emission rates were 64.8 +/- 11.1 and 41.8 +/- 18.2 mu g m(-2) h(-1) (in 2001 and 2006). The average N2O emissions rate was about 38.4 +/- 3.3 mu g m(-2) h(-1). Pearson correlation demonstrated that soil and air temperature exerted a crucial influence on N2O, followed by precipitation and aboveground biomass, but the effect of soil moisture at a depth of 10 cm was negative. Multiple linear regressions showed a good relationship between N2O and all environmental factors. Future scenarios of wetter and warmer weather would noticeably increase alpine meadow N2O emissions on the Tibetan Plateau.
KeywordN2o Emissions Alpine Meadow Temperature Precipitation Aboveground Biomass
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
DOI10.15244/pjoes/76795
WOS KeywordN2O FLUXES ; CHINA ; SOIL ; WATER ; GRASSLAND ; ECOSYSTEM ; METHANE ; MODEL
Indexed BySCI
Language英语
Funding OrganizationNational Natural Science Foundation of China(31470530 ; Qinghai innovation platform construc-tion project(2017-ZJ-Y20) ; National Key Fundamental Plan for Soil System Carbon Dymanic and Mechamism Response for Global Climate Change(2014CB954002) ; 31770532 ; 31400483)
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
WOS IDWOS:000427520400041
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Document Type期刊论文
Identifierhttp://210.75.249.4/handle/363003/13339
Collection中国科学院西北高原生物研究所
Affiliation1.Chinese Acad Sci, Northwest Inst Plateau Biol, Key Lab Restorat & Ecol Cold Reg Qinghai, Xining, Qinghai, Peoples R China
2.Univ Chinese Acad Sci, Beijing, Peoples R China
Recommended Citation
GB/T 7714
Cao Yingfang,Ke Xun,Guo Xiaowei,et al. Nitrous Oxide Emission Rates over 10 Years in an Alpine Meadow on the Tibetan Plateau[J]. POLISH JOURNAL OF ENVIRONMENTAL STUDIES,2018,27(3):1353-1358.
APA Cao Yingfang,Ke Xun,Guo Xiaowei,Cao Guangmin,&Du Yangong.(2018).Nitrous Oxide Emission Rates over 10 Years in an Alpine Meadow on the Tibetan Plateau.POLISH JOURNAL OF ENVIRONMENTAL STUDIES,27(3),1353-1358.
MLA Cao Yingfang,et al."Nitrous Oxide Emission Rates over 10 Years in an Alpine Meadow on the Tibetan Plateau".POLISH JOURNAL OF ENVIRONMENTAL STUDIES 27.3(2018):1353-1358.
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