Distributions of Radiolarian Diversity and Abundance in Surface Sediments of the South China Sea and Their Environmental Implications
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摘要: 采用定量分析方法, 较系统地探讨了整个南海不同环境表层沉积物中放射虫的分布特征及其环境指示意义.结果显示: 南海表层沉积物中放射虫的种类多样性和个体丰度随着水深而增加, 表明南海较深水处的放射虫壳体溶解现象不明显; 上升流活动和海底火山喷发有利于放射虫的大量繁殖, 产生区域性的沉积富集; 反之, 较深水的陆坡区沉积物中出现放射虫种类与丰度异常减少, 可能属浊流搬运再沉积的结果, 物源来自陆架或上陆坡; 种类组成以热带-亚热带特征为主, 还包含了一定数量的冷水种或极区种, 表明在特定海区的古环境分析中采用单一指标判断可能会造成误解.沉积物中放射虫的综合指标较好地反映了南海的生态与沉积环境特征.Abstract: The South China Sea (SCS) has relatively complete physiographical units and ecologic environments, where there are a lot of preservative radiolarian species and specimens in the sediments.Methodsof quantitative statistics and clustering were used to analyze the radiolarian assemblages in surface sediments of the SCS, to understand their compositions and distributions.Resultsof clustering analyses show that the radiolarian assemblages in the SCS surface sediments may mainly be grouped as five types, including assemblages of shallow shelf, coral slope, central basin, southern rich nutrition and summer upwelling, corresponding to different special marine environments with certain radiolarian communities of dominant species.It is also indicated that the north, central and south of the SCS present as three areas of different ecologic conditions, such as the northern sea area affected mostly by terrigenous input, central sea area controlled mainly by the central basin waters, submarine volcanic and summer upwelling activities and the southern sea area falls obviously into a typical coral environment, where there is a better ecologic and sedimental environment for radiolarian existing than that in the northern sea area.The radiolarian assemblages and distributions in the SCS surface sediments well reflect different marine ecologic conditions and sedimental environments, which may be used as reliable evidences for paleoceanographic explanation.
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Key words:
- radiolaria /
- sedimentary distribution /
- surface sediment /
- South China Sea
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图 1 南海表层沉积物取样站位分布
Fig. 1. Map of the South China Sea and stations of surface sediment samples
图 2 南海表层沉积物中放射虫个体丰度分布(个/g干样)
Fig. 2. Distribution of radiolarian abundance in the South China Sea surface sediments (individuals/g.dried sample)
图 3 南海表层沉积物中放射虫丰度(个/g) 和种数与水深关系
Fig. 3. Relations of radiolarian abundance (ind./g) and diversity preserved in surface sediments with water depth in the South China Sea
图 4 南海表层沉积物中放射虫种类数量分布
Fig. 4. Distribution of radiolarian diversity in the South China Sea surface sediments
图 5 南海表层沉积物中放射虫丰度与海底热流分布关系
a.海底热流分布(Shi et al., 2003); b.放射虫丰度分布
Fig. 5. Correlations of radiolarian abundance in surface sediments and oceanic heat flow in the South China Sea
表 1 南海表层沉积物中放射虫主要优势种及其排序
Table 1. Statistics collate of radiolarian dominant species in the South China Sea surface sediments
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[1] Broecker, W. S., Peng, F. H., 1982. Tracers in the sea. Eldigio Press, New York, 679. [2] Chen, M. H., Chen, S. M., 1989. On carbonate dissolution and the distribution model of deep sea sediment types inSouth China Sea. Tropic Oceanology, 8 (3): 20-26 (in Chinese with English abstract). [3] Chen, M. H., Huang, L. M., Tu, X., et al., 1999. Radiolarian transfer function for paleo-primary productivity in the South China Sea. Chinese Science Bulletin, 44 (3): 327-333 (in Chinese). doi: 10.1360/csb1999-44-3-327 [4] Chen, M. H., Tan, Z. Y., 1989. Description of a new genus and 12 new species of radiolarianin sediments from the South China Sea. Tropic Oceanology, 8 (1): 1-9, pls. 1-2 (in Chinese with English abstract). [5] Chen, M. H., Tan, Z. Y., 1996. Radiolaria from surface sediments of the central and northern South China Sea. Science Press, Beijing, 1-271, pls. 1-54 (in Chinese withEnglish abstract). [6] Chen, M. H., Tan, Z. Y., 1999. Radiolarian distribution in surface sediments of the Northern and Central South China Sea. Marine Micropaleontology, 32: 173-194. [7] Chen, M. H., Tu, X., Cai, H. M., et al., 1998. Radiolarian transfer function for palaeotemperature in the South China Sea. In: Depart ment of Geology, Peking University, ed., Collected works of international symposium on geological science held at Peking University, Beijing, China. Earthquake Press, Beijing, 1053-1066 (in Chinese). [8] Chen, M. H., Wang, R. J., Han, J. X., et al., 2002. Radiolarians of Late Miocene from southern South China Seaand their environment implications. Journal of Tropical Oceanography, 21 (2): 66-74 (in Chinese withEnglish abstract). [9] Chen, M. H., Wang, R. J., Yang, L. H., et al., 2003. Development of East Asian summer monsoon environment revealed by radiolarians in the Late Miocene: Evidence from site 1143 of ODP Leg 184. Marine Geology, 201: 169-177. doi: 10.1016/S0025-3227(03)00215-9 [10] Chen, M. H., Wu, H. R., 2000. The recent studies on radiolarian and their application for paleoenvironment. Research & Development of South China Sea, 1: 6-16 (in Chinese). [11] Chen, W. B., 1987. Radiolaria in surface sediments of the South China Sea. Donghai Marine Science, 5 (1-2): 60-76 (in Chinese with English abstract). [12] Qiu, C. Z., 1983. Astudy on the characteristics and distribution of ferromanganese sediment and volcanic debris sediment in South China Sea. Tropic Oceanology, 2 (4): 271-276 (in Chinese with English abstract). [13] Shi, X. B., Qiu, X. L., Xia, K. Y., et al., 2003. Characteristics of surface heat flowinthe South China Sea. Journal of Asian Earth Sciences, 22: 265-277. doi: 10.1016/S1367-9120(03)00059-2 [14] Su, X. H., Tan, Z. Y., 1985. A preliminary investigation of colonial radiolarias of the Xisha Islands, Guangdong Province, China. Studia Marina Sinica, 24: 125-133, pl. 1 (in Chinese with English abstract). [15] Tan, Z. Y., Su, X. H., 1981. Two newspecies of Liriospyris (Radiolaria: Trissocyclidae) from the Xisha Islands, China: With a discussion on their skeletal structures. Acta Zootaxonomica Sinica, 6 (4): 337-343, Plate: ⅰ-ⅲ (in Chinese with English abstract). [16] Wang, J. B., Li, X. Z., Tan, Z. Y., 2005. Species composition and distribution of polycystine radiolarians (Protozoa) in the plankton from the northwestern South China Sea. Acta Oceanologica Sinica, 27 (6): 100-106 (in Chinese with English abstract). [17] Wang, R. J., Abel mann, A., 1999. Pleistocene radiolarian biostratigraphy in the South China Sea. Science in China (Series D), 29 (2): 137-143 (in Chinese). [18] Wang, R. J., Abel mann, A., 2002. Radiolarian responses to paleoceanographic events of the southern South China Sea during the Plesistocene. Marine Micropaleontology, 46: 25-44. doi: 10.1016/S0377-8398(02)00048-8 [19] Wang, R. J., Abel mann, A., Huang, B. Q., 2000a. Relative abundance changes, stratigraphic and palaeo-oceanographic significance of radiolarian Botryocyrtis scutumin South China Sea since Pleistocene. Earth Science—Journal of China University of Geosciences, 25 (6): 553-556 (in Chinese with English abstract). [20] Wang, R. J., Abel mann, A., Li, B. H., et al., 2000b. Abrupt variations of the radiolarianfauna at the mid-Pleistocene climate transition in South China Sea. Chinese Science Bulletin, 45 (3): 314-318 (in Chinese). doi: 10.1360/csb2000-45-3-314 [21] Wang, R. J., Lin, J., Zheng, L. F., et al., 2000c. Siliceous microplankton fluxes and seasonal variations in the central South China Sea during 1993-1995: Monsoon climate and El Niño responses. Chinese Science Bulletin, 45 (9): 974-978 (in Chinese). doi: 10.1360/csb2000-45-9-974 [22] Wang, R. J., Clemens, S., Huang, B. Q., et al., 2003. Quaternary palaeoceanographic changes in the northern South China Sea (ODP Site1146): Radiolarian evidence. Journal of Quaternary Science, 18 (8): 745-756. doi: 10.1002/jqs.784 [23] Wang, Y. J., Chen, M. H., Lu, J., et al., 2007. Distribution of calcareous nannofossils in surface sediments of South China Sea. Journal of Tropical Oceanography, 26 (5): 26-34 (in Chinese with English abstract). [24] Wyrki, K., 1961. Physical oceanography of the Southeast Asian waters: Scientific results of marine investigations of the South China Sea and the Gulf of Thailand. NAGA Rep. 1961, 2, 195pp. Scripps Inst. of Oceanogr., La Jolla, Calif. . [25] Xie, S. P., Xie, Q., Wang, D. X., et al., 2003. Summer upwelling in the South China Sea and its role in regional climate variations. Journal of Geophysical Research, 108 (c8), 3261, doi: 10.1029/2003JC001867,1-13. [26] Yang, L. H., Chen, M. H., Wang, R. J., et al., 2002. Radiolarian record to paleoecological environment change events over the past 1.2 MaBP in the southern South China Sea. Chinese Science Bulletin, 47 (14): 1098-1102 (in Chinese). doi: 10.1360/csb2002-47-14-1098 [27] Yang, L. H., Chen, M. H., Wang, R. J., et al., 2003. Radiolarian fauna characters in southern South China Sea since 1 Ma B. P. . Journal of Tropical Oceanography, 22 (5): 8-15 (in Chinese with English abstract). [28] Zhang, L. L., Chen, M. H., Lu, J., et al., 2005. Living polycystine radiolarian fauna in the upper water column of southern South China Sea and its distribution. Journal of Tropical Oceanography, 24 (3): 55-64 (in Chinesewith English abstract). [29] Zhang, L. L., Chen, M. H., Zhang, L. L., et al., 2007. Late Neocene radiolarian absence event inthe southern South China Sea and its paleoceanographic implication. Progress in Natural Science, 17 (9): 1244-1250 (in Chi-nese). [30] 陈木宏, 陈绍谋, 1989. 南海碳酸盐溶解与深海沉积物类型. 热带海洋, 8 (3): 20-26. https://www.cnki.com.cn/Article/CJFDTOTAL-RDHY198903002.htm [31] 陈木宏, 黄良民, 涂霞, 等, 1999. 南海放射虫与初级生产力的古海洋学转换关系. 科学通报, 44 (3): 327-333. doi: 10.3321/j.issn:0023-074X.1999.03.023 [32] 陈木宏, 谭智源, 1989. 南海沉积物中放射虫1新属12新种. 热带海洋, 8 (1): 1-9, 图版1-2. https://www.cnki.com.cn/Article/CJFDTOTAL-RDHY198901000.htm [33] 陈木宏, 谭智源, 1996. 南海中、北部沉积物中的放射虫. 北京: 科学出版社, 1-271, 图版1-54. https://cpfd.cnki.com.cn/Article/CPFDTOTAL-WTGS201407001021.htm [34] 陈木宏, 涂霞, 蔡慧梅, 等, 1998. 南海放射虫的古温度转换函数研究. 北京大学国际地质科学学术研讨会论文集. 北京: 地震出版社, 1053-1066. [35] 陈木宏, 王汝建, 韩建修, 等, 2002. 南海南部晚中新世的放射虫及其环境探讨. 热带海洋学报, 21 (2): 66-74. doi: 10.3969/j.issn.1009-5470.2002.02.008 [36] 陈木宏, 吴浩若, 2000. 近代放射虫的研究进展及其对揭示古环境的应用前景. 南海研究与开发, 1: 6-16. [37] 陈文斌, 1987. 南海中部表层沉积物中的放射虫. 东海海洋, 5 (1-2): 60-76. https://www.cnki.com.cn/Article/CJFDTOTAL-DHHY1987Z1009.htm [38] 邱传珠, 1983. 南海铁锰沉积物和火山碎屑沉积物特征及其分布规律的研究. 热带海洋, 2 (4): 271-276. https://www.cnki.com.cn/Article/CJFDTOTAL-RDHY198304002.htm [39] 宿星慧, 谭智源, 1985. 西沙群岛群体放射虫的初步调查. 海洋科学集刊, 24: 125-133, 图版Ⅰ. [40] 谭智源, 宿星慧, 1981. 西沙群岛百合篮虫属(放射虫目: 三环虫科) 两新种及其骨骼结构探讨. 动物分类学报, 6 (4): 337-343, 图版ⅰ-ⅲ. https://www.cnki.com.cn/Article/CJFDTOTAL-DWFL198104000.htm [41] 王金宝, 李新正, 谭智源, 2005. 南海西北部浮游生物中多孔放射虫的组成与分布. 海洋学报, 27 (6): 100-106. doi: 10.3321/j.issn:0253-4193.2005.06.013 [42] 王汝建, Abel mann, A., 1999. 南海更新世的放射虫生物地层学. 中国科学(D辑), 29 (2): 137-143. https://www.cnki.com.cn/Article/CJFDTOTAL-JDXK199902005.htm [43] 王汝建, Abel mann, A., 黄宝琦, 2000a. 南海更新世以来Botryocyrtis scutum (放射虫) 的丰度变化及其地层和古海洋学意义. 地球科学——中国地质大学学报, 25 (6): 553-556. https://www.cnki.com.cn/Article/CJFDTOTAL-DQKX200006000.htm [44] 王汝建, Abel mann, A., 李保华, 等, 2000b. 南沙海区放射虫组合在中更新世气候转型时的突然变化. 科学通报, 45 (3): 314-318. https://www.cnki.com.cn/Article/CJFDTOTAL-KXTB200003016.htm [45] 王汝建, 林隽, 郑连福, 等, 2000c. 1993-1995年南海中部的硅质生物通量及其季节性变化: 季风气候和El Niño的响应. 科学通报, 45 (9): 974-978. https://www.cnki.com.cn/Article/CJFDTOTAL-KXTB200009014.htm [46] 王勇军, 陈木宏, 陆钧, 等, 2007. 南海表层沉积物中钙质超微化石分布特征. 热带海洋学报, 26 (5): 26-34. doi: 10.3969/j.issn.1009-5470.2007.05.005 [47] 杨丽红, 陈木宏, 王汝建, 等, 2002. 南海南部1.2MaBP以来古生态环境变化事件的放射虫记录. 科学通报, 47 (14): 1098-1102. doi: 10.3321/j.issn:0023-074X.2002.14.013 [48] 杨丽红, 陈木宏, 王汝建, 等, 2003. 南海南部/百万年以来的放射虫动物群特征. 热带海洋学报, 22 (5): 8-15. doi: 10.3969/j.issn.1009-5470.2003.05.002 [49] 张兰兰, 陈木宏, 陆钧, 等, 2005. 南海南部上层水体中多孔放射虫的组成与分布特征. 热带海洋学报, 24 (3): 55-64. doi: 10.3969/j.issn.1009-5470.2005.03.008 [50] 张丽丽, 陈木宏, 张兰兰, 等, 2007. 南海南部晚第三纪放射虫缺失事件及古海洋学意义. 自然科学进展, 17 (9): 1244-1250. doi: 10.3321/j.issn:1002-008x.2007.09.013 -
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