1.08 Ma以来中国东北赤峰地区黄土粒度变化及其揭示的沙地扩张事件

doi:10.7522/j.issn.1000-694X.2017.00048

摘要/Abstract

摘要： 科尔沁和浑善达克沙地周边沉积了中国东北地区目前已知的保存完好、沉积年代最久远的黄土，是研究区域干旱化过程和沙地演化的理想材料。通过对内蒙古自治区赤峰市附近约1.08 Ma以来约60 m厚黄土剖面的高分辨率粒度分析，发现该地区黄土具有典型风成沉积特征，并且其沉积过程受东亚季风在冰期-间冰期周期性变化影响。由于距离粉尘源区较近，这些黄土序列记录了中更新世以来冬季风增强导致的源区沙漠/沙地的阶段性干旱化和发生于~670 ka和~943 ka的两次沙漠/沙地扩张事件。新揭示的干旱化事件与中国西部-中部的环境演变过程一致，可能是中更新世气候转型时期阶段性全球冰量增加、温度降低驱动中国东北地区更新世气候演化的结果。

关键词: 中国东北, 科尔沁沙地, 浑善达克沙地, 黄土, 粒度, 冬季风

Abstract: Extensive loess deposits that mantle on various landscapes are found in the adjacent areas of the Horqin and Otindag dune fields,which should record the aridificaion history and desert evolution in Northeastern China.Here,we present a high-resolution grain-size analysis of a 59.9-m-thick loess-paleosol sequence in the south margin of Horqin and Otindag sand fields that covers the ca.1.08 Myr (1 080 kyr).The grain-size distribution of these loess deposits shows typical features of aeolian deposits,and records the cyclical variations of the East Asian winter monsoon and dune fields during glacial-interglacial cycles.It also demonstrates a long-term drying trend caused by the strengthening East Asian winter monsoon in Northeastern China since ca.1.08 Ma.The Horqin and Otindag dune fields expanded in ca.670 ka and ca.943 ka.These drying events correspond with other records in the western and central China.It may reflect that the increase of northern hemisphere ice volume and global cooling should have forced the stepwise aridification and caused dune field extension to the Southeast China since the Mid-Pleistocene Transition Event.

Key words: Northeastern China, Horqin dune field, Otindag dune field, loess, grain size, winter monsoon

中图分类号:

P531

吕安琪, 鹿化煜, 曾琳, 弋双文, 卓海昕, 徐志伟, 张文超. 1.08 Ma以来中国东北赤峰地区黄土粒度变化及其揭示的沙地扩张事件[J]. 中国沙漠, 2017, 37(4): 659-665.

Lyu Anqi, Lu Huayu, Zeng Lin, Yi Shuangwen, Zhuo Haixin, Xu Zhiwei, Zhang Wenchao. Evolution of Horqin and Otindag Dune Fields since 1.08 Ma Recorded by Grain Size of Loess in Chifeng,Northeastern China[J]. JOURNAL OF DESERT RESEARCH, 2017, 37(4): 659-665.

参考文献

[1] 刘东生.黄土与环境[M].北京:科学出版社,1985:1-481.
[2] Guo Z,Ruddiman W,Hao Q,et al.Onset of Asian desertification by 22 Myr ago inferred from loess deposits in China[J].Nature,2002,416(6877):159-163.
[3] Liu T,Ding Z.Chinese loess and the paleomonsoon[J].Annual Review of Earth & Planetary Sciences,1998,26(26):111-145.
[4] An Z,Wu G,Li J,et al.Global monsoon dynamics and climate change[J].Annual Review of Earth & Planetary Sciences,2015,42(1):29-77.
[5] 鹿化煜,安芷生,刘洪滨,等.洛川黄土记录的最近2500 ka东亚冬夏季风变化周期[J].地质论评,1998,44(5):553-558.
[6] Lu H,Wang X,Li L.Aeolian sediment evidence that global cooling has driven late Cenozoic stepwise aridification in central Asia[J].Geological Society London Special Publications,2010,342:29-44.
[7] 鹿化煜,王先彦,李郎平.晚新生代亚洲干旱气候发展与全球变冷联系的风尘沉积证据[J].第四纪研究,2008,28(5):949-956.
[8] Ding Z,Sun J,Rutter N,et al.Changes in sand content of loess deposits along a North-South transect of the Chinese Loess Plateau and the implications for desert variations[J].Quaternary Research,1999,52(1):56-62.
[9] Ding Z,Derbyshire E,Yang S,et al.Stepwise expansion of desert environment across northern China in the past 3.5 Ma and implications for monsoon evolution[J].Earth & Planetary Science Letters,2005,237(1/2):45-55.
[10] 曾琳,鹿化煜,弋双文,等.我国东北地区黄土堆积的磁性地层年代与古气候变化[J].科学通报,2011,56(27):2267-2275.
[11] Yi S,Lu H,Stevens T.SAR TT-OSL dating of the loess deposits in the Horqin dunefield (northeastern China)[J].Quaternary Geochronology,2012,10(7):56-61.
[12] Yi S,Buylaert J,Murray A,et al.High resolution OSL and post-IR IRSL dating of the last interglacial-glacial cycle at the Sanbahuo loess site (northeastern China)[J].Quaternary Geochronology,2015,30:200-206.
[13] 裘善文.试论科尔沁沙地的形成与演变[J].地理科学,1989,9(4):317-328.
[14] 董光荣,金炯,李保生,等.科尔沁沙地沙漠化的几个问题:以南部地区为例[J].中国沙漠,1994,14(1):1-9.
[15] 弋双文,鹿化煜,周亚利,等.晚第四纪科尔沁沙地干湿变化的黄土记录[J].中国沙漠,2006,26(6):869-874.
[16] 鹿化煜,张红艳,曾琳,等.温度影响东北地区更新世植被变化的黄土记录[J].第四纪研究,2015,35(4):828-836.
[17] Vandenberghe J,Renssen H,Huissteden K,et al.Penetration of Atlantic westerly winds into Central and East Asia[J].Quaternary Science Reviews,2006,25(17/18):2380-2389.
[18] Zeng L,Lu H,Yi S,et al.New magnetostratigraphic and pedostratigraphic investigations of loess deposits in north-east China and their implications for regional environmental change during the Mid-Pleistocene climatic transition[J].Journal of Quaternary Science,2016,31(1):20-32.
[19] Zeng L,Lu H,Yi S,et al.Long-term Pleistocene aridification and possible linkage to high-latitude forcing:new evidence from grain size and magnetic susceptibility proxies from loess-paleosol record in northeastern China[J].Catena,2017,154:2132.
[20] Lisiecki L E,Raymo M E.A Pliocene-Pleistocene stack of 57 globally distributed benthic δ¹⁸O records[J].Paleoceanography,2005,20(1):1-16.
[21] 鹿化煜,安芷生.洛川黄土粒度组成的古气候意义[J].科学通报,1997,42(1):66-69.
[22] Lu H,Vandenberghe J,An Z.Aeolian origin and palaeoclimatic implications of the ‘red clay’ (north China) as evidenced by grain-size distribution[J].Journal of Quaternary Science,2001,16(1):89-97.
[23] 丁仲礼,孙继敏.联系沙漠-黄土演变过程中耦合关系的沉积学指标[J].中国科学,1999,29(1):82-87.
[24] Ding Z,Liu T,Rutter N W,et al.Ice-volume forcing of East Asian Winter Monsoon variations in the past 800000 years[J].Quaternary Research,1995,44(2):149-159.
[25] 鹿化煜,安芷生.黄土高原黄土粒度组成的古气候意义[J].中国科学:地球科学,1998,(3):278-283.
[26] Lu H,Zhang F,Liu X,et al.Periodicities of palaeoclimatic variations recorded by loess-paleosol sequences in China[J].Quaternary Science Reviews,2004,23(18):1891-1900.
[27] Lu H,Yi S,Xu Z,et al.Chinese deserts and sand fields in Last Glacial Maximum and Holocene Optimum[J].Science Bulletin,2013,58(23):2775-2783.
[28] 陈骏,李高军.亚洲风尘系统地球化学示踪研究[J].中国科学:地球科学,2011,41(9):1211-1232.
[29] 谢静,杨石岭,丁仲礼.黄土物源碎屑锆石示踪方法与应用[J].中国科学:地球科学,2012,42(6):133-143.
[30] Lu H,Zhou Y,Liu W,et al.Organic stable carbon isotopic composition reveals late Quaternary vegetation changes in the dune fields of northern China[J].Quaternary Research,2012,77(3):433-444.
[31] 胡亚萍,贾玉连,张智,等.粒度揭示的末次间冰期以来长江中游风沙-风尘体系[J].中国沙漠,2013,33(5):1324-1332.
[32] Zan J,Fang X,Yang S,et al.Evolution of the arid climate in High Asia since~1 Ma:evidence from loess deposits on the surface and rims of the Tibetan Plateau[J].Quaternary International,2013,313-314(4):210-217.
[33] 昝金波,杨胜利,方小敏.西昆仑山黄土1 Ma以来的粒度变化特征及其古气候意义[J].地球环境学报,2014,5(2):120-126.
[34] Rea D K,Snoeckx H,Joseph L H.Late Cenozoic eolian deposition in the North Pacific:Asian drying,Tibetan uplift,and cooling of the northern hemisphere[J].Paleoceanography,1998,13(3):215-224.
[35] Lu H,Guo Z.Evolution of the monsoon and dry climate in East Asia during late Cenozoic:a review[J].Science China Earth Sciences,2014,57(1):70-79.
[36] Zhang W,Chen J,Ji J,et al.Evolving flux of Asian dust in the North Pacific Ocean since the late Oligocene[J].Aeolian Research,2016,23:11-20.
[37] 沈亚萍,张春来,李庆,等.中国东部沙区表层沉积物粒度特征[J].中国沙漠,2016,36(1):150-157.