Carbon dioxide concentration can limit the identification of C-4 plants by stable isotope composition
文献类型：期刊论文
| 作者 | Zhang, Pu2,3; Liu, Weiguo2; Lu, Xue3,4; Ma, Junjie3; Wu, Jiangli1,3 |
| 刊名 | ARABIAN JOURNAL OF GEOSCIENCES
 |
| 出版日期 | 2016-08-01 |
| 卷号 | 9期号:12 |
| 关键词 | Carbon Isotope C-4 And C-3 Plants High Co2 Concentration Environmental Implications Of The Emergence And Expansion Of C-4 Plants |
| DOI | 10.1007/s12517-016-2621-5 |
| 文献子类 | Article |
| 英文摘要 | The global expansion of C-4 plants during the Late Cenozoic is an important event in the Earth's environmental-ecosystem evolution. Taking into account the nonglobal expansion of C-4 plants, the CO2 concentration is not the only prerequisite for C-4 expansion. The direct driving factors for C-4 expansion may be associated with regional arid and/or warm seasonal precipitation and temperature variations. However, a large change in the CO2 concentration occurred, varying from 100 similar to 300 to > 2000 ppm during geological history; thus, it is necessary to understand the impact of such changes in the atmospheric CO2 concentration on the delta C-13 values of C-3 and C-4 plants during different geological periods. In this article, we analyzed the delta C-13 values for seven C-4 and C-3 plants grown under different CO2 concentrations for 10, 20, and 30 days. According to our study, the delta C-13 records for all the C-3 and C-4 plants show a rapid decrease followed by a slowly stable decreased trend with increasing CO2 concentration when the plants were grown for 10, 20, and 30 days. Comparing with the value averaging about -26 to -27 parts per thousand for C-3 plants and about -12 parts per thousand for C-4 plants, when the CO2 levels reach 20,000 ppm, all of the delta C-13 values of C-4 plants become more negative, varying from -27.5 to -36.1 parts per thousand, which fall into the range of delta C-13 values for C-3 plants. Namely, the increase of carbon dioxide can limit the identification of C-4 plants by carbon isotope composition. Thus, the expansion of C-4 plants as reconstructed from the geological records of carbon isotopes possibly does not reflect the origin and expansion of C-4 plants when atmospheric CO2 concentration was reduced to a threshold value, as previously thought. However, another possible explanation is that the atmospheric CO2 concentration was reduced to a threshold value from which the carbon isotope values of C-3 and C-4 plants can be distinguished. Therefore, we suggest that it is necessary to understand the delta C-13 range for C-3 and C-4 plants, to accurately evaluate the origin and expansion of C-4 plants, for geological periods when a high CO2 concentration occurred. |
| WOS关键词 | CHINESE LOESS PLATEAU ; ATMOSPHERIC CO2 CONCENTRATION ; LATE MIOCENE ; NORTHERN PAKISTAN ; GREAT-PLAINS ; EXPANSION ; CLIMATE ; VEGETATION ; PALEOSOLS ; MONSOON |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000381983600014 |
| 源URL | [http://ir.ieecas.cn/handle/361006/5685]  |
| 专题 | 地球环境研究所_加速器质谱中心 |
| 作者单位 | 1.China Geol Survey, Xian Ctr, Xian 710054, Peoples R China 2.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710075, Peoples R China 3.Northwest Univ, Coll Urban & Environm Sci, Xian 710127, Peoples R China 4.Yulin Univ, Coll Life Sci, Yulin 719000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Pu,Liu, Weiguo,Lu, Xue,et al. Carbon dioxide concentration can limit the identification of C-4 plants by stable isotope composition[J]. ARABIAN JOURNAL OF GEOSCIENCES,2016,9(12). |
| APA | Zhang, Pu,Liu, Weiguo,Lu, Xue,Ma, Junjie,&Wu, Jiangli.(2016).Carbon dioxide concentration can limit the identification of C-4 plants by stable isotope composition.ARABIAN JOURNAL OF GEOSCIENCES,9(12). |
| MLA | Zhang, Pu,et al."Carbon dioxide concentration can limit the identification of C-4 plants by stable isotope composition".ARABIAN JOURNAL OF GEOSCIENCES 9.12(2016). |
入库方式： OAI收割
来源：地球环境研究所
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