The Holocene sporopollen characteristics and their paleoenvironmental significance of Core GZ-2 in Pearl River Delta
Wang Jianhua1, Wang Xiaojing1, Cao Linglong1,2, Zheng Zhuo1, Yang Xiaoqiang1, Yang Jie1,2
1 Department of Earth Sciences， Sun Yat-Sen University， Guangzhou 510275，Guangdong 2 South China Sea Branch， State Oceanic Administration， Guangzhou 510300，Guangdong
Abstract Based on the age data， the sediment characteristics and the sporopollen stratigraphic information of the core GZ-2， Pearl River Delta， the Holocene in the region is suggested to begin from 6.0 ka BP. The characteristics of the Holocene sporopollen groups show the obvious difference from those of the Pleistocene， indicating an obvious change of climate. The sporopollen and the sediment information demonstrate that the paleoclimate of the Holocene is basically warm and wet， with a moderate fluctuation. The hottest and wettest period appeared around 5.0-2.4 ka BP， then the climate became relatively cool and arid around 2.4-1.9 ka BP， warm and wet after 1.9 ka BP， with some weaker fluctuations within these relatively long and remarkable variations. In addition to reflecting the climate change， the sporopollen information indicates also certain deposition environmental changes as well as human activity. An obvious transgression process appeared in the Middle Holocene in this region， and the influence of human activity to the botanic and sedimentary environment intensified gradually after the beginning of the Late Holocene. During this period， the water in Pearl River Delta area became shallower gradually， and the sedimentary environment changed from estuary-shallow sea to seashore shoal， finally to delta plain. The climatic variations in the region are essentially consistent with the sea level changes.
About author: Wang Jianhua， born in 1957， graduated from Sun Yat-Sen University in 1982， obtained his Ph.D. degree from Perpignan University(France)in 1986. Now， he is a professor at SunYat-Sen University， and is engaged in sedimentology and paleoenvironmentology.
Cite this article:
Wang Jianhua,Wang Xiaojing,Cao Linglong et al. The Holocene sporopollen characteristics and their paleoenvironmental significance of Core GZ-2 in Pearl River Delta[J]. JOURNAL OF PALAEOGEOGRAPHY, 2009, 11(6): 661-669.
Wang Jianhua,Wang Xiaojing,Cao Linglong et al. The Holocene sporopollen characteristics and their paleoenvironmental significance of Core GZ-2 in Pearl River Delta[J]. JOPC, 2009, 11(6): 661-669.
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