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  2. 地质与地球物理研究所
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  4. 中国科学院新生代地质与环境重点实验室
Spatiotemporal evolution of C-3/C-4 vegetation and its controlling factors in southern China since the last glacial maximum

文献类型：期刊论文

作者Cui, Linlin1,2; Hu, Jianfang3; Wang, Xu1,2
刊名SCIENCE CHINA-EARTH SCIENCES
出版日期2019-08-01
卷号62期号:8页码:1256-1268
ISSN号1674-7313
关键词Stable carbon isotope Long-chain n-alkanes C-3/C-4 vegetation Last Glacial Maximum Holocene Climate Optimum period
DOI10.1007/s11430-018-9225-9
英文摘要To date, few research have been reported on the evolution of C-3/C-4 vegetation in southern China, and the main mechanism influencing the evolution of C-3/C-4 vegetation is unclear. That makes it difficult for researchers to understand the competition mechanism of C-3 and C-4 plants under different climate environments and its relationship with the climate factors. It is also not conducive for researchers to assess the influence of future climate change on regional C-3/C-4 vegetation. Exactly, C-3/C-4 vegetation change in the regional-scale will have a significant impact on the global carbon cycle and agricultural production. Therefore, it is especially important to reconstruct the evolutionary history of C-3/C-4 vegetation in southern China and clarify the influencing mechanism of climate change. In this study, we systematically analyzed stable carbon isotope (delta C-13) of the long-chain n-alkanes in sediment samples from eight lakes and four peat profiles in southern China, to reconstruct the spatiotemporal evolution of C-3/C-4 vegetation in these regions since the Last Glacial Maximum (LGM) and to investigate the climate factors that affect the C-4 plant abundance change in the research area. The integrated long-chain n-alkane (C-27-C-33) stable carbon isotope results of samples from Zhanjiang Huguangyan Maar Lake, Xingyun Lake, Lugu Lake and Dingnan peat showed that, from the LGM to the Early Holocene, C-4 plant relative abundance exhibited a gradually increasing trend from 21% to 34%. In the Middle Holocene, the C-4 plant abundance significantly declined and reached a lowest value of 10%. In space, the C-4 plant abundance generally exhibited a gradually declining trend from south to north in the LGM and the Early Holocene, while it showed an opposite trend in the Holocene Climate Optimum (6.0 cal ka BP). It reflected that the main influencing factor on C-4 plants spatial distribution was changing from temperature to precipitation. This study indicated that temperature was the dominant factor affecting C-4 plant distribution in southern China, however, when the temperature condition was appropriate, an increase in precipitation (especially more spring precipitation) would reduce the competitive advantages of C-4 plants. Therefore, the combination of temperature and seasonal precipitation was the important factor that determines the C-3/C-4 vegetation proportion change in the southern China. Under the premise that the temperature will rise and precipitation will increase in the future, the reduction of a competitive advantage for the C-4 plants could affect agricultural production in China.
WOS关键词SUMMER MONSOON EVOLUTION ; CARBON-ISOTOPE EVIDENCE ; EAST-ASIAN SUMMER ; SOUTHWESTERN CHINA ; N-ALKANES ; YUNNAN PROVINCE ; CLIMATE CHANGES ; LOESS PLATEAU ; XINGYUN LAKE ; LATE MIOCENE
资助项目"Strategic Priority Research Program" of the Chinese Academy of Sciences[XDA05120103] ; National Natural Science Foundation of China[41603013] ; National Natural Science Foundation of China[41572163]
WOS研究方向Geology
语种英语
出版者SCIENCE PRESS
WOS记录号WOS:000473821100001
资助机构"Strategic Priority Research Program" of the Chinese Academy of Sciences ; "Strategic Priority Research Program" of the Chinese Academy of Sciences ; "Strategic Priority Research Program" of the Chinese Academy of Sciences ; "Strategic Priority Research Program" of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; "Strategic Priority Research Program" of the Chinese Academy of Sciences ; "Strategic Priority Research Program" of the Chinese Academy of Sciences ; "Strategic Priority Research Program" of the Chinese Academy of Sciences ; "Strategic Priority Research Program" of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; "Strategic Priority Research Program" of the Chinese Academy of Sciences ; "Strategic Priority Research Program" of the Chinese Academy of Sciences ; "Strategic Priority Research Program" of the Chinese Academy of Sciences ; "Strategic Priority Research Program" of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; "Strategic Priority Research Program" of the Chinese Academy of Sciences ; "Strategic Priority Research Program" of the Chinese Academy of Sciences ; "Strategic Priority Research Program" of the Chinese Academy of Sciences ; "Strategic Priority Research Program" of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
源URL[http://ir.iggcas.ac.cn/handle/132A11/92690]  
专题地质与地球物理研究所_中国科学院新生代地质与环境重点实验室
通讯作者Hu, Jianfang; Wang, Xu
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Cenozo Geol & Environm, Beijing 100029, Peoples R China
3.Chinese Acad Sci, Guanzhou Inst Geochem, Beijing 510640, Peoples R China
推荐引用方式
GB/T 7714		 Cui, Linlin,Hu, Jianfang,Wang, Xu. Spatiotemporal evolution of C-3/C-4 vegetation and its controlling factors in southern China since the last glacial maximum[J]. SCIENCE CHINA-EARTH SCIENCES,2019,62(8):1256-1268.
APA Cui, Linlin,Hu, Jianfang,&Wang, Xu.(2019).Spatiotemporal evolution of C-3/C-4 vegetation and its controlling factors in southern China since the last glacial maximum.SCIENCE CHINA-EARTH SCIENCES,62(8),1256-1268.
MLA Cui, Linlin,et al."Spatiotemporal evolution of C-3/C-4 vegetation and its controlling factors in southern China since the last glacial maximum".SCIENCE CHINA-EARTH SCIENCES 62.8(2019):1256-1268.

入库方式： OAI收割

来源：地质与地球物理研究所

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