新疆博斯腾湖近现代湖泊沉积物粒度分布特征及其环境记录

doi:10.13866/j.azr.2019.05.07

摘要/Abstract

摘要： 以新疆博斯腾湖岩芯(41 cm)沉积物粒度为研究对象,结合放射性同位素²¹⁰Pb测年方法建立了沉积年代序列,利用粒径-标准偏差方法分析了沉积物中环境敏感组分,并重建了过去150 a来的湖泊水位变化历史。博斯腾湖岩芯沉积物中黏土质(<4 μm)含量为18%,细粉砂质(4～16 μm)含量为40.2%,中粉砂质(16～32 μm)含量23.3%,粗粉砂质(32～64 μm)含量13.4%,砂质(>64 μm)仅有5.1%,不同粒级组分的垂向变化趋势具有较为明显的差异性。通过粒径-标准偏差法对沉积物环境敏感组分的提取表明,组分C₂(粒径7.59～22.91 μm)的平均粒径变化与中值粒径变化一致(r=0.7,P<0.01),组分C₂对博斯腾湖沉积环境变化响应敏感,并由此重建了过去150 a的湖泊水位变化历史。1940年之前,博斯腾湖水位整体处于近150 a来的历史低值期,1910s—1930s低水位期代表了一次较大范围的区域干旱事件;在气候变化和显著增强的人类活动的共同作用下,1980s中后期博斯腾湖水位显著降低。湖泊水位作为沉积粒度变化的影响因子之一,可以通过湖泊沉积物中环境敏感组分的含量重建过去博斯腾湖水位的波动历史,为研究湖泊的历史变化规律及其影响因素提供一种新的途径。

关键词: 沉积物, 粒度, 粒径-标准偏差, 环境重建, 博斯腾湖, 新疆

Abstract: In this study,the ²¹⁰Pb dating method was used to establish the sedimentary chronology sequence of lacustrine sediments of the Bosten Lake in Xinjiang,China. The purposes of the study were to research the grain size distribution of core sediment (41 cm),analyze the sediment components sensitive to environment by applying the grain size-standard deviation method,and reconstruct the history of lake water level change over the past 150 years. The contents of clay (<4 μm),fine silt (4-16 μm),medium silt (16-32 μm),coarse silt (32-64 μm) and the sand (>64 μm) in the core sediment of the Bosten Lake were 18%,40.2%,23.3%,13.4% and 5.1% respectively,and the vertical variations of different fractions were obvious. The average grain size of component C₂ (with particle size of 7.59-22.91 μm) was consistent with the median particle size (r=0.7,P<0.01),and the component C₂ was very sensitive to the change of sedimentary environment in the Bosten Lake Basin,which could be used to reconstruct the water level of the lake over the past 150 years. Water level of the Bosten Lake was low from the 1910s to the 1930s,which revealed that a large-scale regional drought occurred during this period. Under the joint effect of climate change and human activities,water level of the Bosten Lake was significantly fallen in the mid- and late-1980s. The change of sensitive components C₂ was consistent with the change of lake water level,and the water level fluctuation history of the Bosten Lake could be reconstructed from the sensitive components in lake sediments.

Key words: lacustrine sediment, grain size, grain size-standard deviation, environmental reconstruction, Bosten Lake, Xinjiang

华攸胜, 马龙, 吉力力·阿不都外力, 刘文. 新疆博斯腾湖近现代湖泊沉积物粒度分布特征及其环境记录[J]. 干旱区研究, 2019, 36(5): 1109-1116.

HUA You-sheng, MA Long, Jilili Abuduwaili, LIU Wen. Grain-Size Distribution and Its Environmental Records of Modern Lacustrine Sediments from the Bosten Lake in Xinjiang[J]. Arid Zone Research, 2019, 36(5): 1109-1116.

参考文献

[1] Lioubimtseva E,Henebry G M.Climate and environmental change in arid Central Asia:Impacts,vulnerability,and adaptations[J].Journal of Arid Environments,2009,73(11):963-977.
[2] 王苏民,张振克.中国湖泊沉积与环境演变研究的新进展[J].科学通报,1999,44(6):579-587.
[Wang Sumin,Zhang Zhenke.New progress in the study of lake sediment and environmental evolution in China[J].Chinese Science Bulletin,1999,44(6):579-587.]
[3] 马龙,吴敬禄.新疆湖泊沉积记录的气候水文变化及其环境效应[J].干旱区研究,2009,26(6):786-792.
[Ma Long,Wu Jinglu.Climate and hydrological change and environmental response recorded in lacustrine sediment in Xinjiang[J].Arid Zone Research,2009,26(6):786-792.]
[4] Wu J,Schleser G H,Lücke A,et al.A stable isotope record from freshwater lake shells of the eastern Tibetan Plateau,China,during the past two centuries[J].Boreas,2007,36(1):38-46.
[5] 陈敬安,万国江,张峰,等.不同时间尺度下的湖泊沉积物环境记录——以沉积物粒度为例[J].中国科学D辑:地球科学,2003,33(6):563-568.
[Chen Jingan,Wan Guojiang,Zhang Feng,et al.Environmental records of lacustrine sediments in different time scales:Sediment grain size as an example[J].Science in China Series D:Earth Sciences,2003,33(6):563-568.]
[6] Macumber A L,Patterson R T,Galloway J M,et al.Reconstruction of Holocene hydroclimatic variability in subarctic treeline lakes using lake sediment grain-size end-members[J].The Holocene,2018,28(6):845-857.
[7] 郭晓阳,王维,王国良,等.季风边缘区湖泊表层沉积物粒度组分分布特征与影响因素[J].地理研究,2016,35(4):677-691.
[Guo Xiaoyang,Wang Wei,Wang Guoliang,et al.Within-lake distributions of grain-size components and environmental implications based on the survey of lake surface sediment of Chinese monsoon marginal area[J].Geographical Research,2016,35(4):677-691.]
[8] Lu Y,Fang X,Friedrich O,et al.Characteristic grain-size component:A useful process-related parameter for grain-size analysis of lacustrine clastics?[J].Quaternary International,2018,479:90-99.
[9] Vandenberghe J,Sun Y,Wang X,et al.Grain-size characterization of reworked fine-grained aeolian deposits[J].Earth-Science Reviews,2018,177:43-52.
[10] Sun D,Bloemendal J,Rea D,et al.Grain-size distribution function of polymodal sediments in hydraulic and aeolian environments,and numerical partitioning of the sedimentary components[J].Sedimentary Geology,2002,152(3-4):263-277.
[11] Dietze E,Maussion F,Ahlborn M,et al.Sediment transport processes across the Tibetan Plateau inferred from robust grain size end-members in lake sediments[J].Climate of the Past,2014,10:91-106.
[12] Yu S Y,Colman S M,Li L.BEMMA:A hierarchical Bayesian end-member modeling analysis of sediment grain-size distributions[J].Mathematical Geosciences,2016,48(6):723-741.
[13] Zhang X,Zhou A,Wang X,et al.Unmixing grain-size distributions in lake sediments:A new method of endmember modeling using hierarchical clustering[J].Quaternary Research,2018,89(1):365-373.
[14] Sun Y,Gao S,Li J.Preliminary analysis of grain-size populations with environmentally sensitive terrigenous components in marginal sea setting[J].Chinese Science Bulletin,2003,48(2):184-187.
[15] 薛积彬,钟巍.干旱区湖泊沉积物粒度组分记录的区域沙尘活动历史:以新疆巴里坤湖为例[J].沉积学报,2008,26(4):647-654.
[Xue Jibin,Zhong Wei.Variations in dust event reflected by grain-size component of lacustrine records in droughty area:A case study on Barkol Lake,Xinjiang,China[J].Acta Sedimentologica Sinica,2008,26(4):647-654.]
[16] Ma L,Wu J,Abuduwaili J.Climate and environmental changes over the past 150 years inferred from the sediments of Chaiwopu Lake,central Tianshan Mountains,Northwest China[J].International Journal of Earth Sciences,2013,102(3):959-967.
[17] Ma L,Wu J,Abuduwaili J.Variation in aeolian environments recorded by the particle size distribution of lacustrine sediments in Ebinur Lake,northwest China[J].Springer Plus,2016,5(1):481-488.
[18] Ma L,Abuduwaili J,Wu J,et al.Aeolian particle transport inferred using a~150-year sediment record from Sayram Lake,arid northwest China[J].Journal of Limnology,2015,74(3):584-593.
[19] 周建超,吴敬禄,曾海鳌.新疆乌伦古湖沉积物粒度特征揭示的环境信息[J].沉积学报,2017,35(6):1158-1165.
[Zhou Jianchao,Wu Jinglu,Zeng Hai’ao.Environmental information inferred from environmrntally sensitive grain-size component records in Wulungu Lake,Xinjiang[J].Acta Sedimentologica Sinica,2017,35(6):1158-1165.]
[20] 周建超,吴敬禄,曾海鳌.新疆喀纳斯湖沉积物粒度组分所揭示的环境特征[J].地球科学与环境学报,2016,38(6):859-868.
[Zhou Jianchao,Wu Jinglu,Zeng Hai’ao.Environmental characteristics inferred from sediment sensitive grain-size component records in Knans Lake of Xinjiang[J].Journal of Earth Sciences and Environment,2016,38(6):859-868.]
[21] Tarasov P E,Demske D,Leipe C,et al.An 8500-year palynological record of vegetation,climate change and human activity in the Bosten Lake region of Northwest China[J].Palaeogeography,Palaeoclimatology,Palaeoecology,2019,516:166-178.
[22] Mischke S,Wünnemann B.The Holocene salinity history of Bosten Lake (Xinjiang,China) inferred from ostracod species assemblages and shell chemistry:Possible palaeoclimatic implications[J].Quaternary International,2006,154-155:100-112.
[23] Chen F,Huang X,Zhang J,et al.Humid Little Ice Age in arid central Asia documented by Bosten Lake,Xinjiang,China[J].Science in China Series D:Earth Sciences,2006,49(12):1280-1290.
[24] Zhang C,Feng Z,Yang Q,et al.Holocene environmental variations recorded by organic-related and carbonate-related proxies of the lacustrine sediments from Bosten Lake,Northwestern China[J].The Holocene,2010,20(3):363-373.
[25] Huang X Z,Chen F H,Fan Y X,et al.Dry late-glacial and early Holocene climate in arid central Asia indicated by lithological and palynological evidence from Bosten Lake,China[J].Quaternary International,2009,194(1-2):19-27.
[26] Wünnemann B,Mischke S,Chen F.A Holocene sedimentary record from Bosten Lake,China[J].Palaeogeography,Palaeoclimatology,Palaeoecology,2006,234(2):223-238.
[27] Guo W,Huo S,Xi B,et al.Heavy metal contamination in sediments from typical lakes in the five geographic regions of China:Distribution,bioavailability,and risk[J].Ecological Engineering,2015,81:243-255.
[28] Yu Z,Wang X,Zhao C,et al.Carbon burial in Bosten Lake over the past century:Impacts of climate change and human activity[J].Chemical Geology,2015,419:132-141.
[29] 欧文佳,雷怀彦,张成君.博斯腾湖现代沉积特征及其环境意义[J].干旱区研究,2012,29(4):721-726.
[Ou Wenjia,Lei Huaiyan,Zhang Chengjun.Modern sedimentation and its environmental significance of the Bosten Lake[J].Arid Zone Research,2012,29(4):721-726.]
[30] 王润,孙占东,高前兆.2002年前后博斯腾湖水位变化及其对中亚气候变化的响应[J].冰川冻土,2006,28(3):324-329.
[Wang Run,Sun Zhandong,Gao Qianzhao.Water level change in Bosten Lake under the climatic variation background of Central Asia around 2002[J].Journal of Glaciology and Geocryology,2006,28(3):324-329.]
[31] Yao J,Chen Y,Zhao Y,et al.Hydroclimatic changes of Lake Bosten in Northwest China during the last decades[J].Scientific Reports,2018,8(1):9118.
[32] Wu J,Liu W,Zeng H,et al.Water quantity and quality of six lakes in the arid Xinjiang region,NW China[J].Environmental Processes,2014,1(2):115-125.
[33] Zhou H H,Chen Y N,Perry L,et al.Implications of climate change for water management of an arid inland lake in Northwest China[J].Lake and Reservoir Management,2015,31(3):202-213.
[34] 杨桂山,马荣华,张路,等.中国湖泊现状及面临的重大问题与保护策略[J].湖泊科学,2010,22(6):799-810.
[Yang Guishan,Ma Ronghua,Zhang Lu,et al.Lake status,major problems and protection strategy in China[J].Journal of Lake Sciences,2010,22(6):799-810.]
[35] 吴敬禄,马龙,曾海鳌.新疆博斯腾湖水质水量及其演化特征分析[J].地理科学,2013,33(2):231-237.
[Wu Jinglu,Ma Long,Zeng Hai’ao.Water quanlity characteristics and its evolution in Lake Bosten,Xinjiang over the past 50 years[J].Scientia Geographica Sinica,2013,33(2):231-237.]
[36] 郝永志,王君丽.新疆博斯腾湖二维水动力数学模型研究 [J].西北水电,2014(1):85-87.
[Hao Yongzhi,Wang Junli.Study on Bosten Lake by 2D hydrodynamic mathematical model[J].Northwest Hydropower,2014(1):85-87.]
[37] 马龙,吴敬禄,吉力力·阿不都外力.新疆柴窝堡湖沉积物中环境敏感粒度组分揭示的环境信息[J].沉积学报,2012,30(5):945-954.
[Ma Long,Wu Jinglu,Jilili Abuduwaili.Environmental changes inferred from environmrntally sensitive grain-size component records in Chaiwopu Lake,Xinjiang[J].Acta Sedimentological Sinica,2012,30(5):945-954.]
[38] 张敬,牟德海,杜金洲,等.过剩 ²¹⁰Pb年代学的多种计算模式的比较研究[J].海洋环境科学,2008,27(4):370-374.
[Zhang Jing,Mu Dehai,Du Jinzhou,et al.Study on comparison of excess ²¹⁰Pb chronology of several models[J].Marine Environmental Science,2008,27(4):370-374.]
[39] 孙千里,周杰,肖举乐.岱海沉积物粒度特征及其古环境意义 [J].海洋地质与第四纪地质,2001,1(1):93-95.
[Sun Qianli,Zhou Jie,Xiao Jule.Grain-size characteristics of Lake Daihai sediments and its paleaoenvironment significance[J].Marine Geology & Quaternary Geology,2001,1(1):93-95.]
[40] 孙东怀,鹿化煜,David Rea,等.中国黄土粒度的双峰分布及其古气候意义[J].沉积学报,2000,18(3):327-335.
[Sun Donghuai,Lu Huayu,David Rea,et al.Bimode grain-size distribution of Chinese Loess and its paleoclimate implication[J].Acta Sedimentologica Sinica,2000,18(3):327-335.]
[41] 黄小忠,陈发虎,肖舜,等.新疆博斯腾湖沉积物粒度的古环境意义初探[J].湖泊科学,2008,20(3):291-297.
[Huang Xiaozhong,Chen Fahu,Xiao Shun,et al.Primary study on the enviromental significance of grain-size changes of the Lake Bosten sediments[J].Journal of Lake Sciences,2008,20(3):291-297.]
[42] Chen F,Yuan Y,Chen F,et al.A 426-year drought history for Western Tianshan,Central Asia,inferred from tree rings and linkages to the North Atlantic and Indo-West Pacific Oceans[J].The Holocene,2013,23(8):1095-1104.
[43] Li J,Gou X,Cook E R,et al.Tree-ring based drought reconstruction for the central Tien Shan area in Northwest China[J].Geophysical Research Letters,2006,33(7):408-412.
[44] Chen F,Yuan Y,Wei W,et al.Tree-ring recorded hydroclimatic change in Tienshan mountains during the past 500 years[J].Quaternary International,2015,358:35-41.
[45] Hurrell J W,Deser C.North Atlantic climate variability:The role of the North Atlantic Oscillation[J].Journal of Marine Systems,2009,78(1):28-41.
[46] Hurrell J W.Decadal trends in the North Atlantic Oscillation:Regional temperatures and precipitation[J].Science,1995,269(5224):676-679.