地球科学进展 ›› 2011, Vol. 26 ›› Issue (8): 805 -810. doi: 10.11867/j.issn.1001-8166.2011.08.0805

综述与评述 上一篇    下一篇

湖泊沉积物Rb/Sr比值在古气候/古环境研究中的应用与展望
曾艳 1,2,陈敬安 1*,朱正杰 1,李键 1   
  1. 1.中国科学院地球化学研究所环境地球化学国家重点实验室,贵州贵阳550002;2.中国科学院研究生院,北京100049
  • 收稿日期:2010-08-25 修回日期:2011-05-02 出版日期:2011-08-10
  • 通讯作者: 陈敬安(1973-),男,湖北麻城人,研究员,主要从事环境地球化学研究. E-mail:chenjingan@vip.skleg.cn
  • 基金资助:

    国家自然科学基金项目“湖泊沉积物不同赋存状态Rb/Sr比值与古环境研究”(编号:40873084);国家科技支撑计划项目“草海湿地生态系统恢复与重建关键技术研究与示范”(编号:2011BAC02B02)资助.

Advance and Porspective of Rb/Sr Ratios in Lake Sediments as an Index of Paleoclimate/Paleoenvironment

Zeng Yan 1,2,Chen Jing′an 1,Zhu Zhengjie 1, Li Jian 1   

  1. 1.State Key Laboratory of Environmental Geochemistry,Institute of Geochemistry,Chinese Academy of Sciences,Guiyang 550002,China;
    2. Graduate University of Chinese Academy of Sciences,Beijing 100049,China
  • Received:2010-08-25 Revised:2011-05-02 Online:2011-08-10 Published:2011-08-10

Rb和Sr在赋存矿物和表生地球化学行为等方面存在显著差异,因而各种记录体中的Rb/Sr比值被广泛应用于古气候/古环境研究。湖泊沉积物中的Rb、Sr主要包括2部分来源:一是流域物理侵蚀直接带来的陆源碎屑组分,在沉积物中多以残渣态(碎屑矿物)形式存在;二是流域化学风化带来的溶解态物质,在湖泊水体中通过物理吸附、化学沉淀和生物吸收等过程沉降至湖泊沉积物中,多以非残渣态形式存在(包括可交换态、碳酸盐结合态、铁锰氧化物结合态和弱有机结合态等)。沉积物中不同赋存形态的Rb、Sr记录了不同的环境过程与信息,笼统地利用沉积物全样的Rb/Sr比值来反演古气候/古环境往往存在偏差,尤其是在物理风化和化学风化呈反向变化的地区,采用沉积物全样Rb/Sr比值反演的古环境信息可能是混淆的,甚至是错误的。开展湖泊沉积物不同赋存形态Rb/Sr比值的研究可有效解决上述问题,并可提供更加全面、准确的流域物理搬运与化学风化信息:非残渣态Rb/Sr比值反映流域化学风化作用,适用于相对低分辨率(10年际)的研究;而残渣态Rb/Sr比值反映了流域物理搬运作用,可用于年际甚至更高分辨率的研究。

Rb and Sr tend to disperse in different minerals, and they are significantly different in geochemical behavior under the Earth surface conditions, which makes Rb/Sr ratios of natural records used as a proxy of paleoclimate change. Under natural conditions, lake sediments include two material sources. One is the terrigenous debris directly caused by physical erosion, existing in the sediments mainly as the residual (detrital minerals) form. The other is dissolved substance caused by chemical weathering in the catchment, depositing in lake sediments through physical adsorption, chemical precipitation and biological uptaking, existing in the sediments as the non-residual (exchangeable, carbonate, Fe-Mn oxide and organic fraction) form. Rb and Sr of various forms record different environmental processes and information. It would exert effect on the accuracy of the research result to use Rb/Sr ratios of bulk sediment samples to reflect paleoclimate/paleoenvironment change. Especially in the catchment, where the changes of physical weathering and chemical weathering are inverse, it would cause confusion or even misreading of the result to use Rb/Sr ratios of bulk sediment samples to reflect paleoclimate/paleoenvironment change. However, it can effectively solve these problems and provide comprehensive information on the physical removal and chemical weathering in the catchment to carry out the study of Rb/Sr ratios of different forms of lake sediments: Nonresidual Rb/Sr ratios reflect the chemical weathering in the basin, for relatively coarse resolution (10a international) research; and residual Rb/Sr ratios reflect watershed physical removal, for annual or even higher resolution.

中图分类号: 

 [1]Dasch E J.Strontium isotopes in weathering profiles, deepsea sediments,and sedimentary rocks[J].Geochimica et Cosmochimica Acta,1969, 33(12): 1 521-1 552.
 [2]Jin Zhangdong, Zhang Enlou. Paleoclimate implication of Rb/Sr ratios from lake sediments [J].Science Technology and Engineering,2002, 2(3): 20-22.[金章东, 张恩楼. 湖泊沉积物Rb/Sr比值的古气候含义[J]. 科学技术与工程, 2002, 2(3): 20-22.]
[3]Liu Xiuming, An Zhisheng, Qiang Xiaoke, et al. Magnetic properties of the tertiary red clay from Gansu province, China and its paleoclimatic significance[J].Science in China (Series D),2001, 31(7): 635-651.[刘秀铭, 安芷生, 强小科,等. 甘肃第三系红粘土磁学性质初步研究及古气候意义[J]. 中国科学:D辑, 2001, 31(3): 192-205.]
[4]Chen Jun, Wang Yongjin, Ji Junfeng,et al. Rb/Sr variations and its climateic stratigraphical significance of a Loess Paleosol profile from Luochuan, Shaanxi province[J].Quaternary Sciences,1999, 7(4): 350-356.[陈骏, 汪永进, 季峻峰, 等. 陕西洛川黄土剖面的Rb/Sr值及其气候地层学意义[J]. 第四纪研究, 1999, 7(4): 350-356.]
[5]Gallet S, Jahn B M, Torii M. Geochemical characterization of the Luochuan loesspaleosol sequence, China, and paleoclimatic implications[J]. Chemical Geology,1996, 133(1/4): 67-88.
[6]Liu Lianwen, Chen Jun, Chen Yang, et al. Sequential extraction procedure of loess and paleosol and the implications of Rb/Sr ratios[J]. Acta Pedologica Sinica,2002,39(1): 65-70.[刘连文, 陈俊, 陈旸, 等. 黄土的连续提取实验及Rb/Sr值意义[J].土壤学报, 2002,39(1): 65-70.]
[7]Chen Yang, Chen Jun, Liu Lianwen, et al. Spatial and temporal changes of summer monsoon on the Loess Plateau of central China during the last 130 ka inferred from Rb/Sr ratios [J].Science in China (Series D),2003, 33(6): 513-519.[陈旸, 陈骏, 刘连文, 等. 最近13万年来黄土高原Rb/Sr记录与夏季风时空变迁[J].中国科学:D辑,2003, 33(6): 513-519.]
[8]Li Yumei. Luochuan LoessPaleosol sequence and paleoenvironment implications: A brief review[J].Advances in Earth Science, 2002,17(1): 118-125.[李玉梅. 最近2.5 Ma黄土高原环境变化研究进展——来自洛川黄土地层的证据[J]. 地球科学进展, 2002,17(1): 118-125.]
[9]Wang Aihua. Discriminant effect of sedimentary environment by the Sr/Ba ratio of different forms [J]. Acta Sdimentologica Sinica,1996, 14(4): 168-173.[王爱华. 不同形态锶钡比的沉积环境判别效果比较[J].沉积学报,1996,14(4): 168-173.]
[10]Jin Z D, Cao J J, Wu J L,et al. A Rb/Sr record of catchment weathering response to Holocene climate change in Inner Mongolia[J].Earth Surface Processes and Landforms,2006, 31(3): 285-291.
[11]Jin Z D, Wang S M, Shen J, et al. Chemical weathering since the little ice age recorded in lake sediments: A highresolution proxy of past climate[J].Earth Surface Processes and Landforms,2001, 26(7): 775-782.
[12]Jin Z D, Wu J L, Cao J J,et al. Holocene chemical weathering and climatic oscillations in north China: Evidence from lacustrine sediments[J]. Boreas,2004, 33(3): 260-266.
[13]Jin Zhangdong, Wang Suming, Shen Ji,et al. Carbonate verse silicate Sr isotope in lake sediments and its response to Little Ice Age[J].Chinese Science Bulletin,2003, 48(1): 95-100.[金章东, 王苏明, 沈吉, 等. 湖泊沉积物Sr同位素记录的小冰期[J]. 科学通报,2002, 47(19): 1 512-1 516.]
[14]Jin Zhangdong, Wang Sumin,Shen Ji,et al. Weak chemical weathering during the Little Ice Age recorded by lake sediments [J]. Science in China (Series D),2001, 31(3): 221-225.[金章东, 王苏民, 沈吉, 等. 小冰期弱化学风化的湖泊沉积记录[J].中国科学:D辑, 2001, 31(3): 221-225.]
[15]Yanhong W, Lücke A, Zhangdong J,et al.Holocene climate development on the central Tibetan Plateau: A sedimentary record from Cuoe Lake[J].Palaeogeography, Palaeoclimatology, Palaeoecology,2006, 234(2/4): 328-340.
[16]Chen J, An Z S, Head J. Variation of Rb/Sr ratios in the loess-paleosol sequences of central China during the last 130 000 years and their implications for monsoon paleoclimatology [J]. Quaternary Research,1999, 51(3): 215-219.
[17]Chen L, Shen H Y, Jia Y L,et al. Environmental change inferred from Rb and Sr of lacustrine sediments in Huangqihai Lake, Inner Mongolia[J].Journal of Geographical Sciences, 2008, 18(3): 373-384.
[18]Chen Jun, An Zhisheng, Wang Yongjin,et al. Distribution of Rb and Sr in the Luochuan LoessPaleosol sequence of China during the last 800 ka: Lmplication for paleomonsoon variations [J]. Science in China (Series D),1999, 42(3): 225-232.[陈骏, 安芷生, 汪永进, 等. 最近800 ka洛川黄土剖面中Rb/Sr分布和古季风变迁[J]. 中国科学:D辑, 1998, 28(6): 498-504.]
[19]Zeng Yan,Chen Jing'an, Zhang Wei,et al. The nonresidual Rb/Sr ratio of the Huguangyan Maar Lake and its implications for paleoclimate change[J].Geochimica,2011, 40(3):249-257.[曾艳,陈敬安,张维,等. 湖光岩玛珥湖非残渣态Rb/Sr比值研究及其古气候意义[J]. 地球化学, 2011, 40(3):249-257.]
[20]Kalugin I, Selegei V, Goldberg E,et al.Rhythmic fine-grained sediment deposition in Lake Teletskoye, Altai, Siberia, in relation to regional climate change[J].Quaternary International,2005, 136(1): 5-13.
[21]Kalugin I, Daryin A, Smolyaninova L,et al. 800-yr-long records of annual air temperature and precipitation over southern Siberia inferred from Teletskoye Lake sediments[J]. Quaternary Research,2007, 67(3): 400-410.
[22]Sun Qian, Jia Yulian, Shen Hongyuan,et al. Distribution and environmental implication of Rb、Sr in the Holocene lacustrine sediments of Huangqihai Lake, Inner Mongolia[J]. Journal of Palaeogeogtaphy,2010,(4): 444-450.[孙倩,贾玉连,申洪源,等. 内蒙古黄旗海全新世湖泊沉积物中Rb、Sr分布及其环境意义[J]. 古地理学报, 2010,(4): 444-450.]
[23]Shen Hongyuan, Jia Yulian, Li Xusheng,et al. Environmental change inferred from distribution of Rb and Sr in different grain size fractions from lacustrine sediments in Huangqihai Lake, Inner Mongolia [J].Acta Geographica Sinica,2006, 61(11):1 208-1 217.[申洪源,贾玉连,李徐生,等. 内蒙古黄旗海不同粒级湖泊沉积物Rb、Sr组成与环境变化[J]. 地理学报, 2006, 61(11): 1 208-1 217.]
[24]Xu H, Liu B, Wu F. Spatial and temporal variations of Rb/Sr ratios of the bulk surface sediments in Lake Qinghai[J].Gochemical Transactions,2010,11(3),doi:10.1186/1467-4866-11-3.
[25]Koinig K A, Shotyk W, Lotter A F, et al. 9000 years of geochemical evolution of lithogenic major and trace elements in the sediment of an alpine lake—The role of climate, vegetation, and land-use history[J].Journal of Paleolimnology,2003, 30(3): 307-320.
[26]Li Jingying, Zhang Jing. Weathering of watershed basins and global climatic change[J]. Advances in Earth Science, 2002,17(3): 411-419.[李晶莹,张经. 流域盆地的风化作用与全球气候变化[J]. 地球科学进展, 2002,17(3): 411-419.]

[1] 常海钦,付亚龙,林鑫,张苗苗,孟刚刚. 流域盆地化学风化强度空间分布及控制因素研究:以长江和珠江为例[J]. 地球科学进展, 2019, 34(1): 93-102.
[2] 安艳玲, 吕婕梅, 罗进, 吴起鑫, 秦立. 赤水河流域岩石化学风化及其对大气CO 2的消耗[J]. 地球科学进展, 2018, 33(2): 179-188.
[3] 张乾柱, 陶贞, 高全洲, 马赞文. 河流溶解硅的生物地球化学循环研究综述[J]. 地球科学进展, 2015, 30(1): 50-59.
[4] 陶贞,张超,高全洲,李元. 陆地硅的生物地球化学循环研究进展[J]. 地球科学进展, 2012, 27(7): 725-732.
[5] 汪齐连,刘丛强,赵志琦,B.Chetelat,丁虎. 长江流域河水和悬浮物的锂同位素地球化学研究[J]. 地球科学进展, 2008, 23(9): 952-958.
[6] 申慧彦,李世杰. 湖泊沉积物中DNA提取与PCR扩增[J]. 地球科学进展, 2008, 23(4): 433-438.
[7] 徐则民,黄润秋,唐正光,费维水. 岩体化学风化的非连续性及其科学意义[J]. 地球科学进展, 2006, 21(7): 706-712.
[8] 韩贵琳;刘丛强. 贵州喀斯特地区河流的研究——碳酸盐岩溶解控制的水文地球化学特征[J]. 地球科学进展, 2005, 20(4): 394-406.
[9] 吴艳宏;李世杰. 湖泊沉积物色度在短尺度古气候研究中的应用[J]. 地球科学进展, 2004, 19(5): 789-792.
[10] 马英军;霍润科;徐志方;张辉;刘丛强. 化学风化作用中的稀土元素行为及其影响因素[J]. 地球科学进展, 2004, 19(1): 87-094.
[11] 李晶莹,张经. 流域盆地的风化作用与全球气候变化[J]. 地球科学进展, 2002, 17(3): 411-419.
[12] 李春雷,陈 骏,季峻峰. 青藏高原的隆起与海洋锶同位素组成的演化[J]. 地球科学进展, 1999, 14(6): 582-588.
阅读次数
全文


摘要