Climate as the dominant control on C-3 and C-4 plant abundance in the Loess Plateau: Organic carbon isotope evidence from the last glacial-interglacial loess-soil sequences
文献类型：期刊论文
| 作者 | Gu, ZY; Liu, Q; Xu, B; Han, JM; Yang, SL; Ding, ZL; Liu, TS |
| 刊名 | CHINESE SCIENCE BULLETIN
 |
| 出版日期 | 2003-06-01 |
| 卷号 | 48期号:12页码:1271-1276 |
| 关键词 | C3/C4 plants delta C-13(org) Loess Plateau LGM Holocene |
| ISSN号 | 1001-6538 |
| DOI | 10.1360/03wd0200 |
| 文献子类 | Article |
| 英文摘要 | Abundance of C-3 and C-4 photosynthesis plants can be inferred relatively from stable carbon isotopic composition of organic matter in soils. The samples from five sequences of the last glacial-interglacial loess-soil in the Chinese Loess Plateau have been measured for organic carbon isotopic ratios (delta(13)C(org)). The organic carbon isotope data show that relative abundance (or biomass) of C-4 plants was increased ca. 40% for each sampling site from the last glacial maximum (LGM) to Holocene optimum, and increased southeastward on the Loess Plateau during both periods of LGM and Holocene. Statistic analyses on the steady maximum delta(13)C(org) values of Holocene soils and modern climatic data from the Loess Plateau and Inner Mongolia indicate that the C-4 plant abundance increases with increasing temperature and decreasing precipitation. The C-4 plant abundance is related much closer with mean April temperature and precipitation than annual. These results lead us to deduce following conclusions. First, temperature is the major factor for control on variations in C-4 plant abundance in the Loess Plateau from the last glacial to interglacial. In the absence of favorable temperature condition, both of low moisture and low atmospheric CO2 concentration are insufficient to drive an expansion of the C-4 plants in the plateau. Second, delta(13)C(org) in the loess-paleosol sequences, as a proxy of the relative abundance of C-4 plants in the Loess Plateau, could not be used as an indicator of changes in the summer monsoon intensity unless the temperature had changed without great amplitude. Since all C-4 plants are grasses, finally, the increase of the C-4 plants supports that forest has not been dominant in the ecosystem on the Loess Plateau during Holocene although precipitation and atmospheric CO2 were largely increased relative to those during LGM. |
| WOS关键词 | NORTH-CENTRAL CHINA ; ATMOSPHERIC CO2 ; VEGETATION ; MATTER ; PALEOMONSOON ; QUATERNARY ; DELTA-C-13 ; EVOLUTION ; SECTION ; FOREST |
| WOS研究方向 | Science & Technology - Other Topics |
| 语种 | 英语 |
| WOS记录号 | WOS:000184249300023 |
| 出版者 | SCIENCE CHINA PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/78947]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Gu, ZY |
| 作者单位 | Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Gu, ZY,Liu, Q,Xu, B,et al. Climate as the dominant control on C-3 and C-4 plant abundance in the Loess Plateau: Organic carbon isotope evidence from the last glacial-interglacial loess-soil sequences[J]. CHINESE SCIENCE BULLETIN,2003,48(12):1271-1276. |
| APA | Gu, ZY.,Liu, Q.,Xu, B.,Han, JM.,Yang, SL.,...&Liu, TS.(2003).Climate as the dominant control on C-3 and C-4 plant abundance in the Loess Plateau: Organic carbon isotope evidence from the last glacial-interglacial loess-soil sequences.CHINESE SCIENCE BULLETIN,48(12),1271-1276. |
| MLA | Gu, ZY,et al."Climate as the dominant control on C-3 and C-4 plant abundance in the Loess Plateau: Organic carbon isotope evidence from the last glacial-interglacial loess-soil sequences".CHINESE SCIENCE BULLETIN 48.12(2003):1271-1276. |
入库方式： OAI收割
来源：地质与地球物理研究所
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