A stable carbon isotopic approach for understanding the CO2 flux at the Haibei Alpine Meadow Ecosystem - A simple model
文献类型：期刊论文
| 作者 | Yi, XF; Yang, YQ |
| 刊名 | ecological modelling
 |
| 出版日期 | 2006-03-15 |
| 卷号 | 193期号:3-4页码:796-800 |
| 关键词 | CO2 flux source sink stable carbon isotope alpine meadow Qinghai-Xizang (Tibet) Plateau |
| 合作状况 | 其它 |
| 中文摘要 | although respiration of organisms and biomass as well as fossil fuel burning industrial production are identified as the major sources, the co2 flux is still unclear due to the lack of proper measurements. a mass-balance approach that exploits differences in the carbon isotopic signature (delta(13)c) of co2 sources and sinks was introduced and may provide a means of reducing uncertainties in the atmospheric budget. delta(13)c measurements of atmospheric co2 yielded an average of - 10.3 parts per thousand relative to the peedee belemnite standard; soil and plants had a narrow range from -25.09 parts per thousand to -26.51 parts per thousand and averaged at -25.80 parts per thousand. based on the fact of steady fractionation and enrichment during respiration of mitochondria, we obtained the emission of co2 of 35.451 mol m(-2) a(-1) and co2 flux of 0.2149 mu mol m(-2) s(-)1. the positive co2 flux indicated the haibei alpine meadow ecosystem a source rather than a sink. the mass-balance model can be applied for other ecosystem even global carbon cycles because it neglects the complicated process of carbon metabolism, however just focuses on stable carbon isotopic compositions in any of compartments of carbon sources and sinks. (c) 2005 elsevier b.v. all rights reserved. |
| 英文摘要 | although respiration of organisms and biomass as well as fossil fuel burning industrial production are identified as the major sources, the co2 flux is still unclear due to the lack of proper measurements. a mass-balance approach that exploits differences in the carbon isotopic signature (delta(13)c) of co2 sources and sinks was introduced and may provide a means of reducing uncertainties in the atmospheric budget. delta(13)c measurements of atmospheric co2 yielded an average of - 10.3 parts per thousand relative to the peedee belemnite standard; soil and plants had a narrow range from -25.09 parts per thousand to -26.51 parts per thousand and averaged at -25.80 parts per thousand. based on the fact of steady fractionation and enrichment during respiration of mitochondria, we obtained the emission of co2 of 35.451 mol m(-2) a(-1) and co2 flux of 0.2149 mu mol m(-2) s(-)1. the positive co2 flux indicated the haibei alpine meadow ecosystem a source rather than a sink. the mass-balance model can be applied for other ecosystem even global carbon cycles because it neglects the complicated process of carbon metabolism, however just focuses on stable carbon isotopic compositions in any of compartments of carbon sources and sinks. (c) 2005 elsevier b.v. all rights reserved. |
| WOS标题词 | science & technology ; life sciences & biomedicine |
| 学科主题 | 生物科学 |
| 类目[WOS] | ecology |
| 研究领域[WOS] | environmental sciences & ecology |
| 关键词[WOS] | budget model ; dioxide ; methane ; environments ; sink |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000236016700040 |
| 公开日期 | 2009-12-08 |
| 源URL | [http://ir.nwipb.ac.cn/handle/363003/1340]  |
| 专题 | 西北高原生物研究所_中国科学院西北高原生物研究所 |
| 作者单位 | 1.Henan Univ Sci & Technol, Coll Agr, Luoyang 471003, Henan, Peoples R China 2.Chinese Acad Sci, NW Inst Plateau Biol, Xining 810001, Qinghai, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yi, XF,Yang, YQ. A stable carbon isotopic approach for understanding the CO2 flux at the Haibei Alpine Meadow Ecosystem - A simple model[J]. ecological modelling,2006,193(3-4):796-800. |
| APA | Yi, XF,&Yang, YQ.(2006).A stable carbon isotopic approach for understanding the CO2 flux at the Haibei Alpine Meadow Ecosystem - A simple model.ecological modelling,193(3-4),796-800. |
| MLA | Yi, XF,et al."A stable carbon isotopic approach for understanding the CO2 flux at the Haibei Alpine Meadow Ecosystem - A simple model".ecological modelling 193.3-4(2006):796-800. |
入库方式： OAI收割
来源：西北高原生物研究所
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