Abstract
The Beibu Gulf is a semi-enclosed gulf in the northwest of the South China Sea. We palynologically analyzed 306 surface sediment samples from the eastern Beibu Gulf to improve bioclimatic interpretation of fossil pollen records there. Surface pollen assemblages could be classified into five pollen regions based on the distributions of total, arboreal, herbaceous and fern pollen concentrations. Four high-concentration and three low-concentration subregions could be distinguished within these regions. The distribution patterns of surface pollen assemblages were consistent with those of grain sizes of surface sediments. Sediments from regions with high pollen concentrations were very fine and fine silts (>7.0 Φ, <0.008 mm), whereas those with low pollen concentrations were fine sand (<3.5 Φ, >0.088 mm). Sedimentary heterogeneity of surface pollen assemblages was closely related to pollen source, transportation and sedimentation controlled by ocean currents, tides and waves, and oceanic bottom topography. Fern spores exhibited higher percentages along the east margins of the region, while arboreal types like Pinus increased in concentration towards the center. Herbaceous pollen appeared in high percentages around seacoasts near their source areas. Dacrydium and mangrove pollen were distributed near their source regions at low percentages. We discuss the sediment dynamic environments in the eastern Beibu Gulf based on surface pollen distributions. The estuary region is an important access to the sea basin and a depositional site for terrestrial pollen grains. Coastal regions can accumulate pollen due to the back-and-forth movements of tides there. Although ocean currents on a gulf scale tend to spread pollen grains, the interaction of multiple currents could lead to pollen accumulation and deposition. Low surface pollen concentrations in the northeast shallow-water regions of the eastern Beibu Gulf could be attributed to repeated washing and sediment floatation caused by severe wave activities during the summer. Strong tides in Qiongzhou Strait frequently wash the seabed and disadvantage pollen deposition, leading to low surface pollen concentrations there.
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References
Muller J. Palynology of recent Orinoco delta and shelf sediments. Micropaleontol, 1959, 5: 1–32
Melia M B. The distribution and relationship between palynomorphs in aerosols and deep-sea sediments off the coast of Northwest Africa. Mar Geol, 1984, 58: 345–371
Hooghiemstra H, Agwu C O C. Distribution of palynomorphs in marine sediments: A record for seasonal wind patterns over NW Africa and adjacent Atlantic. Geol Rundsch, 1986, 75: 81–95
Hooghiemstra H, Beug H J. Pollen and spore distribution in recent marine sediments: A record of NW-African seasonal wind patterns and vegetation belts. Meteor-Forsch-Ergebn C, 1986, 40: 87–135
Dupont L M, Agwu C O C. Environmental control of pollen grain distribution patterns in the Gulf of Guinea and offshore NW-Africa. Geol Rundsch, 1991, 80: 567–589
Campo E V, Bengo M D. Mangrove palynology in recent marine sediments off Cameroon. Mar Geol, 2004, 208: 315–330
Beaudouin C, Suc J-P, Escarguel G, et al. The significance of pollen signal in present-day marine terrigenous sediments: The example of the Gulf of Lions (western Mediterranean Sea). Geobios, 2007, 40: 159–172
Crouch E M, Mildenhall D C, Neil H L. Distribution of organic-walled marine and terrestrial palynomorphs in surface sediments, offshore eastern New Zealand. Mar Geol, 2010, 208: 315–330
Wang K F, Wang Y J, Xu J S, et al. Sporopollen and Algal Assemblages in the Yellow Sea Sediments (in Chinese). Beijing: China Ocean Press, 1987. 9–23
Wang K F, Sun Y H, Zhang Y L, et al. Sporopollen and Algal Assemblages in the East China Sea Sediments (in Chinese). Beijing: China Ocean Press, 1987. 10–27
Yang J W, Chen X L. Sporepollen in surface sediments of tidal flat in north coast of Hangzhou Bay (in Chinese). Mar Geol Quat Geol, 1985, 5: 101–108
Sun X J, Li X. Different dynamics and routes of modern pollen transport in the northern and southern parts of the South China Sea (in Chinese). Sci China Ser D-Earth Sci, 1998, 41: 494–498
Zhang Y L, Zhang W D, Wang K F, et al. Studies on the relationship between sporopollen of surface sediments and vegetation of the continental margin in the northeastern South China Sea (in Chinese). Mar Sci Bull, 2002, 21: 28–36
Zhang Y L, Long J P. Studies on the relationship between sporopollen of submarine surface sediments and vegetation around Hainan island. J Mar Sci, 2007, 25: 23–30
Sun X J, Li X, Beug H-J. Pollen distribution in hemipelagic surface sediments of the South China Sea and its relation to modern vegetation distribution. Mar Geol, 1999, 156: 211–226
Editorial Board of the Vegetation Atlas of China. Vegetation Atlas of China (in Chinese). Beijing: Science Press, 1980. 884–916
Xia H Y, Li S H, Shi M C. A 3-D numerical simulation of wind-driven currents in the Beibu Gulf (in Chinese). Acta Oceanol Sin, 2001, 23: 11–23
Sun S W, Wang Y, Lan J. Hydrographic condition and circulation in the Beidu Gulf in winter and summer of 2006 (in Chinese). In: Hu J Y, Yang S Y, eds. Oceanic Study in Beibu Gulf. Beijing: China Ocean Press, 2008. 64–72
Cheng Z Z, Hu J Y, Sun Z Y, et al. Sectional features of temperature and salinity in Beibu Guly during July–August, 2006 (in Chinese). In: Hu J Y, Yang S Y, eds. Oceanic Study in Beibu Gulf. Beijing: China Ocean Press, 2008. 79–87
Yang S Y, Chen B, Li P L. A study of the characteristics of water transport from the South China Sea into Beibu Bay via the Qiongzhou Strait in summer in terms of temperature and salinity data (in Chinese). Trans Oceanol Limnol, 2006, 1: 2–7
Faegri K, Ivrsen J. Textbook of Pollen Analysis. 3rd ed. Oxford: Blackwell, 1989. 295
Chen L, Li T J, Xu D.. Sediment grain size characteristics and distributions patterns in Beibu Gulf (in Chinese). Trop Geogr, 2010, 30: 587–590
Zu Z W, Ma F, Zhang F, et al. Sediment transport trend analysis in the North-eastern part of Beibu Gulf (in Chinese). In: Hu J Y, Yang S Y, eds. Oceanic Study in Beibu Gulf. Beijing: China Ocean Press, 2008. 143–154
Gao S, Miehael C. The use of grain size trends in marine sediment dynamics (in Chinese). Sci Found Chin, 1998, 4: 241–246
Ma F, Xu Z W, Zhang F, et al. Sediment grain size trend analysis and transport patterns in the eastern part of Beibu Gulf (in Chinese). In: Hu J Y, Yang S Y, eds. Oceanic Study in Beibu Gulf. Beijing: China Ocean Press, 2008. 143–154
Chen D S, Chen B, Yan J H, et al. The seasonal variation characteristics of residual currents in the Qiongzhou Strait (in Chinese). Transa Oceanol Limnol, 2006, 2: 13–17
Yang S Y, Bao X W, Chen C S, et al. Analysis on characteristics and mechanism of current system in west coast of Guangdong Province in the summer (in Chinese). Acta Oceanol Sin, 2003, 25: 1–8
Zheng Z, Cour P, Zhou H P, et al. Modern pollen in Hainan Islad, southern China: Altitudinal pollen distibution in the tropical rain forest (in Chinese). Acta Palaeontol Sin, 2002, 41: 487–496
Li Y Y. Current situation and ecological protection of mangrove wetland in Guangxi (in Chinese). Resour Surv Environ, 2008, 29: 55–60
Zou F S, Yang Q F, Cai J Q, et al. Avian diversity on mangrove wetland of Leizhou Peninsula (in Chinese). Chin J Ecol, 2008, 27: 383–390
Zhang G G, Liang W, Qian F W, et al. Influence of mangrove forests on waterbirds in Hainan Island (in Chinese). Sci Silva Sin, 2008, 44: 97–100
Xu J L, Li Y X, Cai F X, et al. Evolution of Shoal and Channel of Lingdingyang Ocean in the Pearl River Estuary (in Chinese). Beijing: China Ocean Press, 1985. 34–36
Dong Y H, Hui X X, Wang X L. A review on sediment movements in the ocean, coast and estuary (in Chinese). Water Resour Electr Power, 2009, 35: 1–24
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Tong, G., Chen, L., Long, J. et al. Surface pollen distribution patterns in Beibu Gulf and corresponding sediment dynamics environment. Chin. Sci. Bull. 57, 902–911 (2012). https://doi.org/10.1007/s11434-011-4912-2
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DOI: https://doi.org/10.1007/s11434-011-4912-2