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长江口泥质区百年来高分辨率沉积粒度变化及影响因素分析
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摘要
长江口泥质区是末次冰消期高海面以来的长江入海物质沉积中心和“物质汇”之一,也是长江人类活动排放入海污染物的重要捕集区,该区域存在长江口贫氧区。本区沉积学的研究对认识东海物质通量和陆海相互作用有重要意义。通过沉积学和地球化学的方法和210Pb测年数据,对取自长江口泥质区的重力柱状样E4(122°37.311′E、31°00.325′N,水深21m,样长144cm)和振动柱状样Chjk01(122°45.035′E、30°50.00′N,水深28m,样长366cm)进行了高分辨率的粒度分析,阐述了其特征和变化规律,分析了其影响因素。
     两柱状样210Pb测年表明,长江口泥质区Chjk01与E4柱状样的沉积年代分别为132年(1873~2005年)和41年(1962~2003年),平均沉积速率分别为2.8cm/a与3.5cm/a。
     两柱状样地层中粉砂的含量为66.5%~69.8%,粘土含量为27.7%~30.1%,砂含量为2.5%~3.4%,属于以粉沙为主的泥质沉积。两柱状样地层中粉砂含量基本不变,砂与粘土含量则呈此消彼长。
     季节性尺度的高分辨率沉积物粒度变化显示,Chjk01孔沉积物粒度自1873年以来呈三段式变化:1)1873~1957年间的84年中,粒度稳定地逐渐变粗,砂含量增加,粘土含量减少,分选变差;2)1957~1981年间的24年中,粒度明显变细,粘土含量增加,砂含量减少,分选变好,1971~1981年间粒度最细;3)1981~2005年间的24年中,粒度总体变粗,砂含量波动式增大,但变化趋势不明显。E4孔在1962~2003年间的41年中,沉积粒度特征与Chjk01孔基本一致。
     E4柱状样沉积物中有机碳含量在1966~1981年段和1988~2003年段与沉积物粒度变化存在负相关,有机碳含量在此两段时间内主要受粒度变化影响;而无机碳含量总体与沉积物粒度变化呈正相关。
     1873年以来的132年期间长江口泥质区粒度变化的阶段性特征,主要与同时期长江水沙入海主泓通道的位置以及主汊道的分沙比阶段性演变相对应,而对长江大通站水沙变化和东亚季风强度变化不敏感,主泓入海位置与两孔位置距离的变化,是影响泥质区粗、细粒级含量相对变化的主控因素,掩盖了其他因素的影响。
     长江口泥质区属长江水下三角洲前三角洲区,沉积过程与浙闽沿岸的长江泥质区有明显区别。前者沉积物粒度变化主要受长江入海主泓位置变化控制,后者是东亚冬季风驱动下浙闽沿岸流输送的长江再悬浮物质的沉积体,其粒度变化受到东亚冬季风强度的控制。
The mud area off Changjiang estuary are one of the accumulative centers of Changjiang sediment since Holocene epoch, the main container pollutant materials from human activities, and the hypoxia zone. So it is very significant for the research of the material flux and Land-Ocean Interactions in the Coastal Zone(LOICZ) in the East China Sea.
     The piston core sediments, collected at station Chjk01(122°45.035′E, 30°50.00′N; water depth, 28m) and E4(122°37.311′E, 31°00.325′N; water depth, 21m) in the mud area off the Changjiang estuary, were taken for geochemical and sedimentological analysis. The piston cores Chjk01 and E4 are respectively 366cm and 144cm long. Based on the analyzing results with 210Pb dating data, high resolution of the sediment grain-size are studied. This paper analyzed the characteristic and regularity of grain-size variation and expounded its influential factors.
     The 210Pb dating of the two cores showed that the mean sedimentation rate of the core Chjk01 and E4 were 2.8 cm/a and 3.5 cm/a, respectively, in corresponding to the sedimentation duration of 132 a (1873~2005 a) for core Chjk01 and 41 a (1962~2003 a) for core E4.
     The two core sediments, belonging to the muddy deposition body with silt as the main part. are mostly consists of silt(66.5%~69.8%), and clay in minor portion(27.7%~30.1%) with small amount of sand(2.5%~3.4%). At the stratum, the content of sand and clay varies in an opposite way, while the content of silt remains quite stable.
     Variation of the grain-size parameters in sediment core Chjk01 illustrated clearly a three-phasic changes since 1873: 1) The grain size became gradually coarser and coarser since 1873 to 1957 with increasing mean size, sand content and standard deviation and decreasing clay content; 2) The grain size became finer in 1957~1981 with decreased mean size, sand content and standard deviation, and decreased clay content. The finest part is the sediment in 1971~1981; 3) The grain size became coarser again in 1981~2005 with fluctuated increased mean size and sand content, with no obvious trends. Variation of the grain-size characteristics of core E4 during 1962~2003 was in agreement with that of core Chjk01 in general.
     There was a negative correlation between the organic carbon content and grain-size variation in the sediments of the piston core E4 during 1966~1981a and 1988~2003a, and the organic carbon content was essentially influenced by the grain-size change in the two periods. Moreover, the inorganic carbon content was positively correlated with grain-size variation in general.
     The phase characteristics of the grain-size variations in the Yangtze River mouth mud area since 1873, was generally in accordance with the phase evolvement of the location of the Yangtze River trunk stream, and the sediment diversion ratio of the main branch channel. The variations of water and sediment discharge at Datong Station and the Asian monsoon show little effect on the features of the grain-size variations. The variations of the distance between the trunk stream of the Yangtze River and the Chjk01 and E4, was the main controlling factor influencing the changes of relative content between the fine and coarse sediments in the mud area, and concealed the influence of other factors.
     The mud area off the Changjiang estuary belongs to the sedimentary province of pro-delta among the sub-aqueous Changjiang Delta. There is obvious difference in deposition process among the mud area off the Changjiang estuary and the coastal mud area off Fujian and Zhejiang. The evolvement of the location of the Yangtze River trunk stream was the main controller factor for the variation of grain-size in the mud area off the Changjing estuary, moreover, the other mud area was the results of re-deposition of the re-suspended material, driven by the East Asian monsoon, from the sediments of the Changjiang, and its grain-size variation was mainly controlled by the East Asian monsoon.
引文
1. Milliman J D, Shen H T, Yang Z S et al. Transport and deposition of river sediment in the Changjiang Estuary and adjacent continental shelf. Continental Shelf Research, 1985, (1/2): 37~45
    2. Milliman J D, Beardsley R C, Yang Z S et al. Modern Huanghe drived on the outer shelf of the East China Sea: identification and potential transport mechanism. Continental Shelf research,1985, 4: 175~188
    3. Milliman J D, Qin Yunshan, Ren Mei’e et al. Man’s influence on the erosion and transport of sediment by Asian rivers: the Yellow River (Huanghe ) example. Journal of Geology, 1987, 95: 751~762
    4. Martin J M., Zhang Jing, Shi M C et al. Actual flux of the Huanghe (Yellow River) sediment to the western Pacific Ocean. Netherlands Journal of Sea Research, 1993, 31(3): 243~254
    5. Saito Y, Yang Z S. Historical change of the Huanghe (Yellow River) and its impact on the sediment budget of the East China Sea, Proceedings of International Symposium on Global Fluxes of Carbon and its Related Substances in the Coastal-Ocean-Atmosphere System, Edited by Iseki, K., Koike, I., Tsunogai, S., Oba, T., Hokkaido University (Sapporo), Japan, 1994, 7~12.
    6.杨作升,郭志刚,王兆祥等.黄东海陆架悬浮体向东部深海区输送的宏观格局.海洋学报,1992,14(2): 81~90
    7. Kim J M, Kennett J P. Paleo-environmental changes associated with the Holocene marine transgression, Yellow Sea (Hwanghae). Mar. Micropaleontol., 1998, 34: 71~89
    8.程鹏,高抒.北黄海西部海底沉积物的粒度特征和净输运趋势.海洋与湖沼,2000, 31(6): 604~615
    9. Liu J P, Milliman J D, Gao S et al. Holocene development of the Yellow River's subaqueous delta, North Yellow Sea. Marine Geology, 2004, 209(1~4): 45~67
    10. Kim J M, Kucera M. Benthic foraminiferal record of environmental changes in the Yellow sea (Huanghe) during the last 15,000 years. Quaternary Science Reviews, 2000, 19: 1067~1085
    11.刘振夏,Berne S.东海陆架的古河道和古三角洲.海洋地质与第四纪地质,2000, 20(1): 9~14
    12.胡敦欣,韩舞鹰,章申等著.长江、珠江口及邻近海域陆海相互作用.北京:海洋出版社,2001.26~49,57~66
    13.肖尚斌,李安春,蒋富清等.近2ka来东海内陆架的泥质沉积记录及其气候意义,科学通报,2004, 49(21): 2233~2238
    14. Zhang J C, Liu Z G. Climate of china: New York, Wiley, 1992. 376P
    15. Wang P X., Clemens S, Beaufort L et al. Evolution and variability of the Asian monsoon system state of the art and outstanding issues. Quaternary Science Reviews, 2005, 24: 595~629
    16. Xiao J L, Porter S C , An Z S et al.Grain size of quartz as an indicator of winter monsoon strength on the Loess Plateau of Central China during the last 130 000 years. Quarternary Research, 1995, 43(1): 22~29
    17. An Z S, Kukla G, Porter S C et al. Late Quaternary dust flow on the Chinese Loess Plateau[J]. Catena, 1991, 18: 125~132
    18.秦蕴珊,赵一阳,陈丽蓉等.东海地质[M].北京:科学出版社,1987.1~91
    19.李道季,张经,黄大吉等.长江口外氧的亏损.中国科学(D辑),2002, 32(8): 686~694
    20. Milliman J D, Meade R C. World-wide delivery of river sediment to oceans. Journal of Geology, 1983, 91: 1~21
    21. Yang Z S, Wang H J, Saito Y et al. Dam impacts on the Changjiang (Yangtze River) sediment discharge to the sea: the past 55 years and after the Three Gorges dam. Water Resources Research, 2006, 42: 1~10
    22.汪品先,张纪军,赵泉鸿等.东海底质中的有孔虫和介形虫[M].北京:海洋出版社,1988
    23. Yang Z S, Saito Y, Guo Z G et al. Distal mud area as a material sink in the East China Sea. In: Iseki K, Koike I, Tsunogai S et al. Proceedings of International Symposium on Global Fluxes of Carbon and its Related Substances in the Coastal-Ocean-Atmosphere System, Hokkaido University, Japan, 1994. 1~6
    24.郭志刚,杨作升,曲艳慧等.东海陆架泥质区的物质汇沉积地球化学的比较研究.沉积学报, 2000b, 18(2): 284~289
    25.郭志刚,杨作升,雷坤等.东海陆架北部泥质区沉积动力过程的季节性变化.青岛海洋大学学报,1999, 29(3): 507~513
    26.郭志刚,杨作升,曲艳慧等.东海中陆架泥质区及其周边表层沉积物碳的分布与固碳能力的研究.海洋与湖沼,1999, 30(4): 421~426
    27.郭志刚.东海陆架泥质区的物质汇作用.博士论文, 2000a
    28.孙有斌,高抒,李军.边缘海陆源物质中环境敏感粒度组分的初步分析.科学通报,2003, 48(1): 83~87
    29.肖尚斌,李安春.东海内陆架泥质区沉积物的环境敏感粒度组分[J].沉积学报,2005, 23(1):122~129
    30.向荣,杨作升,郭志刚等.济州岛西南泥质区粒度组分变化的古环境应用.地球科学,2005, 30(5): 582~587
    31.张晓东,许淑梅,翟世奎等.东海内陆架沉积气候信息的端元分析模型反演.海洋地质与第四纪地质,2006, 26(2): 25~32
    32.秦蕴珊.中国陆架海的地形及沉积类型的初步研究.海洋与湖沼,1963, 5(1): 71~86
    33.郭志刚,杨作升,范德江.东海陆架北部表层细粒级沉积物的级配及意义.青岛海洋大学学报,2002, 32(5): 741~747
    34.王先兰,马克俭,陈建林等.东海碎屑矿物特征的研究.中国科学(B辑),1985, 5: 474~482
    35.陈丽蓉.渤海、黄海、东海沉积物中矿物组合的研究.海洋科学,1989, 2: 1~8
    36.陈丽蓉,徐文强,申顺喜.东海沉积物的矿物组合及其分布特征.科学通报,1979, 15: 709~712
    37.杨怀仁,谢志仁.中国东部近20 000年来的气候波动与海面升降运动.海洋与湖沼, 1984, 15(1): 1~13
    38.金翔龙.东海海洋地质.北京:海洋出版社,1992. 196~215
    39.杨子赓.冰消期以来的突变事件.纪念袁复礼教授诞辰100周年学术讨论会论文集,北京:地震出版社, 1993, 95~99
    40. Wang H, Keppens E, Nielsen P et al. Oxygen and carbon isotope study of the Holocene oyster reefs and paleo-environmental reconstruction on the northwest coast of Bohai Bay, China. Marine Geology, 1995, 124: 289~302
    41.孟广兰,韩有松,王少青.南黄海陆架区15ka以来的古气候事件与环境演变.海洋与湖沼, 1998, 29(3): 297~305
    42.刘健,李绍全,王圣洁等.末次冰消期以来黄海海平面变化与黄海暖流的形成.海洋地质与第四纪地质,1999, 19(1): 13~24
    43.李铁刚,李绍全,苍树溪等.YSDPl02钻孔有孔虫动物群与南黄海东南部古水文重建.海洋与湖沼,2000, 31(6): 588~595
    44. Yoo D G, Lee C W, Kim S P et al. Late Quaternary transgressive and highstand system, tracts in the northern East China Sea mid-shelf. Marine Geology, 2002, 187: 313~328
    45. Hu Dunxin. Upwelling and sedimentation dynamics: 1. the role of upwelling in sedimentation in the Huanghai Sea and East China Sea: a description of general features. Chinese Journal of Oceanologia and Limnologia, 1984, 2(1): 12~19
    46. Taoyuan Wei, Zhongyuan Chen, Lingyun Duan, Jiawei Gu, Yoshiki Saito, Weiguo Zhang, Yonghong Wang, Yutaka Kanai. Sedimentation rates in relation to sedimentary processes of the Yangtze Estuary, China. Estuarine, Coastal and Shelf Science, 2007, 71: 37~46
    47.秦蕴珊,赵一阳,陈丽蓉等.黄海地质[M].北京:海洋出版社,1989.1~289
    48. Graber H C, Beardsley R C, Grain W D. Storm-generated waves and sediment resuspension in the East China and Yellow Seas, Journal of physical oceanography Volume, 1989, 19: 1039~1059
    49.沈焕庭,贺松林,潘定安等.长江河口最大混浊带研究.华东师范大学学报,1995(长江河口最大浑浊带和河口锋研究论文集): 15~21
    50.秦蕴珊,郑铁民.东海大陆架沉积物分布特征的初步探讨.见:中国科学院海洋研究所海洋地质研究室编.黄东海地质,北京:利学出版社,1982. 31~51
    51. Zhongyuan Chen, Baoping Song, Zhanghua Wang, Yongli Cai. Late Quaternary evolution of the sub-aqueous Yangtze Delta, China: sedimentation, stratigraphy, palynology, and deformation. Marine Geology, 2000, 162: 423~441
    52. Liu J P, Milliman J D, Gao S. The Shandong mud wedge and post-glacial sediment accumulation in the Yellow Sea. Geo-Marine Letters, 2002. 21(4): 212~218.
    53. Demaster D J, Mckee B A. Rates of sediment accumulation particle reworking based on radiochemical measurements form continental shelf deposits in the East China Sea. Continental Shelf Research, 1985, 4: 148~158
    54.杨作升.黄河、长江、珠江沉积物中粘土的矿物组合、化学特征及其与物源区气候环境的关系.海洋与湖沼,1988, 19(4): 336~346
    55.郭志刚,杨作升,陈致林等.东海陆架泥质区沉积有机质的物源分析.地球化学,2001, 30(5): 416~424
    56. Shen H T, Li J F, Zhu H F et al. Characteristics of suspended sediment transportation in Yangtze River mouth. In: Chen Jiyu, Shen Huanting, Yun Caixing (ed.), Process of Dynamics and Geomorphology of the Changjiang Estuary. Shanghai: the Science & Technology Press in Shanghai, 1988. 205~215
    57. Xie Q C, Zhang L F, Zhou F G et al. Features and transportation of suspended matter over the continental shelf off the Changjiang Estuary. In: Ren Mei’e (ed.), Proceeding of International Symposium on the Sedimentation on the Continental Shelf, with Special Reference to the East China Sea. Beijing: China Ocean Press, 1983. 400~412
    58. Tian R C. Dual filtration effect of geochemical and biogeochemical processes in the Changjiang Estuary. Chinese Journal of Occanologia and Limonologia, 1991, 9(1): 33~43
    59.谷国传,胡方西,胡辉等.长江口外高盐水入侵分析.华东师范大学学报,1995(长江河口最大浑浊带和河口锋研究论文集):109~117
    60.林以安,唐仁友,李炎等.长江口生源元素的生物地球化学特征与絮凝沉降的关系.海洋学报,1995, 17(5): 65~72
    61.曲沛奎,严肃庄.长江口悬沙锋及其对物质输移的影响.华东师范大学学报,1995(长江河口最大浑浊带和河口锋研究论文集):118~127
    62.宋金明.中国近海沉积物一海水界面化学.北京:海洋出版社. 1997. 1~222
    63.郭志刚,杨作升,范德江等.长江口泥质区的季节性沉积效应.地理学报,2003, 58(4): 591~597
    64.段凌云,王张华,李茂田等.长江口沉积物210Pb分布及沉积环境解释.沉积学报,2005, 23(3): 514~522
    65.庄克琳,毕世普,刘振夏等.长江水下三角洲的动力沉积.海洋地质与第四纪地质,2005, 25(2): 1~10
    66.张宗雁,郭志刚,张干等.东海泥质区表层沉积物中有机氯农药的分布.中国环境科学,2005, 25(6): 724~728
    67.张宗雁,郭志刚,张干等.东海泥质区表层沉积物中多环芳烃的分布特征及物源.地球化学,2005, 34(4): 75~82
    68.庞重光,王凡,白学志等.夏、冬两季长江口及邻近海域悬浮物的分布特征及其沉积量.海洋科学,2003, 27(12): 31~35
    69.沈焕庭,朱建荣.论我国海岸带陆海相互作用研究.海洋通报,1999, 18(6): 11~17
    70.沈焕庭著.长江河口物质通量.海洋出版社,2001. 60~80
    71.恽才兴著.长江河口近期演变基本规律.北京:海洋出版社,2004. 1~47
    72.张民清,曹华.长江口北支洞床演变趋势探析[J].人民长江, 1998, 29(2): 32~34
    73.周开胜,孟翊,刘苍字等.长江口北支沉积物粒度特征及其环境意义.海洋地质动态,2005, 21(11): 1~7
    74.陈吉余,沈焕庭,恽才兴等.长江河口动力过程和地貌演变.上海:上海科学技术出版社,1988. 48~62
    75.陈吉余,王宝灿,虞志英等.中国海岸发育过程和演变规律[M].上海:上海科学技术出版社,1989. 1~17
    76.杨欧,刘苍字.长江口北支沉积物粒径趋势及泥沙来源研究.水利学报,2002, 2: 79~84
    77.胡敦欣,韩舞鹰,章申等著.长江、珠江口及邻近海域陆海相互作用.北京:海洋出版社,2001. 26~49, 57~66
    78.程鹏,高抒,李徐生.激光粒度仪测试结果及其与沉降法、筛析法的比较[J].沉积学报,2001, 19(3): 449~455
    79.牛占,和瑞勇,李静等.激光粒度分析仪应用于黄河泥沙颗粒分析的实验研究[J].泥沙研究,2002, 10(5): 6~14
    80. Emanuela Molinaroli, Giovanni De Falco, Sandro Rabitti. Stream-scanning laser system, electric sensing counter and settling grain size analysis: a comparison using referencematerials and marine sediments [J]. Sedimentary Geology, 2000, 130: 269~281
    81. Folk R L, Ward W C. Brazos River bar: a study in the Significance of grain size parameters. Journal of Sedimentary petrology, 1957, 27: 3~26
    82.黄胜.长江口演变特征.泥沙研究,1986, (4): 1~11
    83. Li Fengye. Modern sedimentation rates and sedimentation feature in the Huanghe River Estuary based on 210Pb technique[J]. Chin Journal of Oceanologia and Limnologia, 1993, 11(4): 333~342
    84. Li Peiying, Wang Yongji, Liu Zhenxia. Chronostratigraphy and deposition rates in the Okinawa Trough region. Sciences in China(Ser. D), 1999, 42(4): 408~415
    85.施雅风,姜彤,苏布达等.1840年以来长江大洪水演变与气候变化关系初探.湖泊科学,2004, 16(4): 289~297
    86. Rea D K, Hovan S A. Grain-size distribution and depositional processes of the mineral component of abyssal sediments: Lessons from the North Pacific. Paleoceanography, 1995, 12: 251~258
    87. Wang L, Samthein M, Erlenkeuzer H et al. East Asian monsoon climate during the late-Pleistoncene: High resolution sediment records from the South China Sea. Marine Geology, 1999, 156: 245~284
    88.施能,朱乾根.1873~1995年东亚冬、夏季风强度指数[J].气象科技,2000, 3: 14~18
    89.陈上及,马继瑞.海洋数据处理分析方法及其应用.北京:海洋出版社,1991. 481~579
    90.贾建军,高抒,高建华,潘少明,王爱军.珠江口河流输沙、河口沉积与粒度信息之间的联系,海洋科学进展,2005, 23(3): 297~304
    91. Liu J P, Xu K H, Li A C, Milliman J D, Velozzi D M, Xiao S B, Yang Z S. Flux and fate of Yangtze River sediment delivered to the East China Sea. Geomorphology,2007, 85(3~4): 208~244
    92. Yang Z S, Milliman J D. Fine-grained sediments of the Changjiang and Huanghe rivers ans sediment source of the East China Sea. In: ProeInt Sym.Beijing:Sedimentation on the Continents Shelf, with special Reference to the East China.China Ocean Press, 1983: 436~446
    93.郭志刚,杨作升,王兆祥.黄东海海域水团发育对底质沉积物分布的影响.青岛海洋大学学报,1995, 25 (1): 75~83
    94.郭志刚,杨作升,张东奇,范德江,雷坤.冬、夏季东海北部悬浮体分布及海流对悬浮体输运的阻隔作用.海洋学报,2002, 24(5): 71~80
    95.范德江,杨作升,孙效功,张东奇,郭志刚.东海陆架北部长江、黄河沉积物影响范围的定量估算.青岛海洋大学学报,2002, 32(5): 748~756
    96.孙效功,方明,黄伟.黄东海陆架区悬浮体输送的时空变化规律.海洋与湖沼,2000, 31(6): 581~587
    97.朱纯,潘建明,卢冰等.长江、老黄河口及东海陆架沉积有机质物源指标及有机碳的沉积环境.海洋学研究,2005, 23(3): 36~46

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