帮助 关于我们

返回检索结果

末次冰期以来南海北部沉积有机碳记录及其古植被环境信息
ORGANIC CARBON RECORDS SINCE THE LAST GLACIAL PERIOD IN THE NORTHERN SOUTH CHINA SEA SEDIMENTS:IMPLICATIONS FOR VEGETATION AND ENVIRONMENTAL CHANGES

查看参考文献46篇

周斌 1   郑洪波 1   杨文光 2   韦刚健 3   李丽 4   王慧 4  
文摘 末次冰期以来南海北部深海沉积物中陆源植被碎屑来源及其指示的植被类型变化等一直存在争议。正构烷烃比值、正构烷烃碳同位素(δ~(13)C_(alk))及总有机碳同位素(~(13)C_(TOC))等有机碳指标的应用可能为之提供新的证据。南海北部MD05-2905岩芯中正构烷烃比值C31/C27,C31/(C31+C27+C29)和ACL(长链烷烃平均链长)等呈现末次冰期高,全新世低的变化,指示末次冰期草本植物相对增多,全新世木本植物较多。δ~(13)C_(TOC)及δ~(13)C_(alk)均呈现末次冰期相对偏正,全新世偏负的变化,指示C4植物在冰期增多,间接印证草本植物的增多。末次冰期,由于相对冷干的气候、大气CO_2浓度的降低,以及低海平面导致陆架的广阔出露,均有利于更多草本植物的生长。末次冰消期及全新世随着温度的升高及降水的增多,森林植被发育,C_3植物相对较多。该岩芯碳同位素结果与南海北部孢粉结果的对比表明,南海北部深海沉积中正构烷烃指标指示南海北部周边较大区域范围的植被变化信息。
其他语种文摘 The pollen-based vegetation type and the provenance of terrestrial plant remnants since the last glacial period retrieved from the Northern South China Sea(SCS)have been controversial.Organic carbon records such as n-alkanes ratios stable carbon isotopic compositions of n-alkanes(δ~(13)C_(alk))and total organic carbon(δ~(13)C_(TOC))in the sediments from core MD05-2905(20°08.17'N117°21.61'E 1647m water depth)which located on the continental slope of the Northern SCS may supply new evidence for changes in terrestrial vegetations.This core has a total length of 11.94m and spanned the time period of ca.28kaB.P.to 2kaB.P.according to ten AMS 14C dates.n-Alkanes ratios such as C31/C27 C31/(C31+C27+C29)ACL(average chain length of long-chain n-alkanes)from core MD05-2905 showing similar variation trend revealed a pattern of glacial to interglacial variability.n-Alkanes ratios of C31/C27 presents fluctuation variations with higher average value of 2.2 during the last glacial period and lower average value of 1.6 during the Holocene while decreasing gradually with a average value of 2.0 during the deglaciation of 16~10kaB.P.This indicates that there was increasing grassy vegetation in the last glacial period and more woody vegetation in the Holoceneδ~(13)C_(alk)and δ13CTOC values were more positive in the glacial period than in the Holocene which indicates that C4 plants increased at the LGM and that more woody plants in the Holocene.At the LGM increasing grassy vegetations developed in land and in the enlarged exposed continental shelf due to relatively cold-arid climate and lower atmospheric CO_2 concentration.During the deglaciation and Holocene more closed forest(C_3 plants)flourished due to higher temperature and precipitation.Comparison between carbon isotopic compositions and pollen data from adjacent cores in Northern SCS at LGM indicated that plant remains in the core were not only from the continental shelf dominated by C3 grass Artemisia but also from southeast mainland and Taiwan island that were characterized by abundant C_4 flora.Alkanes records from core MD05-2905 can recover the regional vegetation changes around the Northern South China Sea.
来源 第四纪研究 ,2011,31(3):498-505 【核心库】
关键词 南海北部 ; 末次冰期 ; C_3/C_4植物 ; 正构烷烃 ; 单体碳同位素
地址

1. 南京大学地球科学与工程学院表生地球化学研究所, 南京, 210093  

2. 成都理工大学沉积地质研究院, 成都, 610059  

3. 中国科学院广州地球化学研究所, 广州, 510640  

4. 同济大学, 海洋地质国家重点实验室, 上海, 200092

语种 中文
文献类型 研究性论文
ISSN 1001-7410
学科 地质学
基金 国家自然科学基金项目 ;  同济大学海洋地质国家重点实验室开放基金 ;  中国科学院广州地球化学研究所中国科学边缘海地质重点实验室开放基金
文献收藏号 CSCD:4207580

参考文献 共 46 共3页

1.  Wang Pingxian. Late Quaternary paleoceanography of the South China Sea:Surface circulation and carbonate cycles. Marine Geology,1995,127(1/4):145-165 CSCD被引 46 次    
2.  赵泉鸿. 南海第四纪古海洋学研究进展. 第四纪研究,1999(6):481-501 CSCD被引 41 次    
3.  Lambeck K. Sea level change through the last glacial cycle. Science,2001,292:679-686 CSCD被引 81 次    
4.  孙湘君. 用花粉记录探索古植被 ——答“关于华南地区末次冰盛斯植被类型的讨论”. 第四纪研究,2004,24(2):217-221 CSCD被引 5 次    
5.  Zheng Z. A 400,000 year record of vegetational and climatic changes from a volcanic basin,Leizhou Peninsula,Southern China. Palaeogeography,Palaeoclimatology,Palaeoecology,1999,145(4):339-362 CSCD被引 28 次    
6.  Yu G. Palaeovegetation of China:A pollen data-based synthesis for the mid-Holocene and last glacial maximum. Journal of Biogeography,2000,27(3):635-664 CSCD被引 77 次    
7.  吕厚远. 末次冰期以来湛江湖光岩玛珥湖孢粉记录及古环境变化. 古生物学报,2003,42(2):284-291 CSCD被引 29 次    
8.  刘金陵. 关于华南地区末次冰盛期植被类型的讨论. 第四纪研究,2004,24(2):213-216 CSCD被引 13 次    
9.  Liew Pingmei. Pollen stratigraphy,vegetation and environment of the last glacial and Holocene--A record from Toushe Basin,Central Taiwan. Quaternary International,2006,147(1):16-33 CSCD被引 1 次    
10.  刘金陵. 再论华南地区末次冰盛期植被类型. 微体古生物学报,2007,24(1):105-112 CSCD被引 3 次    
11.  Sun Xiangjun. Different dynamics and routes of modern pollen transport in the northern and southern parts of the South China Sea. Science in China(Series D),1998,41(1):57-61 CSCD被引 4 次    
12.  Sun Xiangjun. A pollen record of the last 37ka in deep sea core 17940 from the northern slope of the South China Sea. Marine Geology,1999,156(1/4):227-244 CSCD被引 23 次    
13.  Sun Xiangjun. Deep sea pollen from the South China Sea:Pleistocene indicators of East Asian Monsoon. Marine Geology,2003,201(1/3):97-118 CSCD被引 41 次    
14.  Luo Yunli. Vegetation evolution and millennial-scale climatic fluctuations since Last Glacial Maximum in pollen record from Northern South China Sea. Chinese Science Bulletin,2005,50(8):793-799 CSCD被引 2 次    
15.  Fuhrmann A. Variations in organic matter composition in sediments from Lake Huguang Maar(Huguangyan),South China during the last 68ka:Implications for environmental and climatic change. Organic Geochemistry,2003,34(11):1497-1515 CSCD被引 19 次    
16.  刘强. 62kaBP以来湖光岩玛珥湖沉积物有机碳同位素记录及古气候环境意义. 海洋地质与第四纪地质,2005,25(2):115-126 CSCD被引 26 次    
17.  Cerling T E. Carbon isotopes in soils and palaeosols as ecology and palaeoecology indicators. Nature,1989,341:138-139 CSCD被引 59 次    
18.  Zhou Bin. Vegetation evolution on the Central Chinese Loess Plateau since Late Quaternary evidenced by elemental carbon isotopic composition. Chinese Science Bulletin,2009,54(12):2082-2089 CSCD被引 5 次    
19.  Prahl F G. Terrestrial organic carbon contributions to sediments on the Washington margin. Geochimica et Cosmoschimica Acta,1994,58(14):3035-3048 CSCD被引 32 次    
20.  Brassell S C. Molecular stratigraphy:A new tool for climatic assessment. Nature,1986,320:129-133 CSCD被引 82 次    
引证文献 12 篇

1 朱芸 晚全新世以来福建仙山泥炭钻孔的正构烷烃记录 第四纪研究,2013,33(6):1211-1221
CSCD被引 12 次

2 王世朋 南海北部陆坡GHE24L柱样沉积物磁性特征及其环境意义 第四纪研究,2014,34(3):516-527
CSCD被引 18 次

显示所有12篇文献

论文科学数据集
PlumX Metrics
相关文献

 作者相关
 关键词相关
 参考文献相关

版权所有 ©2008 中国科学院文献情报中心 制作维护：中国科学院文献情报中心
地址：北京中关村北四环西路33号 邮政编码：100190 联系电话：(010)82627496 E-mail:cscd@mail.las.ac.cn 京ICP备05002861号-4 | 京公网安备11010802043238号