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引用本文:吴艳宏,羊向东,朱海虹.鄱阳湖湖口地区4500年来孢粉组合及古气候变迁.湖泊科学,1997,9(1):29-34. DOI:10.18307/1997.0105
Wu Yanhong,Yang Xiangdong,Zhu Haihong.Pollen assemblage and paleoclimatic change in hukou area of poyang lake for the past 4 500 years. J. Lake Sci.1997,9(1):29-34. DOI:10.18307/1997.0105
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鄱阳湖湖口地区4500年来孢粉组合及古气候变迁
吴艳宏, 羊向东, 朱海虹
中国科学院南京地理与湖泊研究所湖泊沉积与环境开放实验室, 南京 210008
摘要:
通过对鄱阳湖湖口梅家刘ZK2孔沉积物的孢粉分析研究,初步恢复了4500年来湖口地区的古植被演替及古气候变迁历史.其古气候变化经历了以下几个阶段:4.5-3.8kaB.P,气候暖湿;3.8-3.4kaBP,气候凉偏干;3.4-3.0kaB.P,气候温暖偏湿;3.0kaB.P.前后,为一短暂的降温时期,气候凉湿;2.8-2.35kaB.P,气候温暖偏湿;2.35kaBP.以来,气候偏凉,但仍存在数次微弱的冷暖波动.
关键词:  孢粉组合  古植被  古气候  鄱阳湖
DOI:10.18307/1997.0105
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Pollen assemblage and paleoclimatic change in hukou area of poyang lake for the past 4 500 years
Wu Yanhong, Yang Xiangdong, Zhu Haihong
Nanijing Institate of Geography & Limnology Chinese Academy of Sciences, Nanjing 210008
Abstract:
Pollen assemblages of profile ZK2 (116°12'50"E, 29°44'30"N, 7.83m a. s. 1.) are studied to reconstruct the paleoclimate of Hukou arca, Poyang Lake. According to the pollen diagram, 8 assemblage zones have been distinguished in an ascending order as follows; Ⅰa, Pinus-Quercus-Liqidamber(20.2-17.6m); Ⅰb, Pinus-Cyclobalanoopsis(17.6-16m); Ⅱ, Pinus-Microlepia (16-13.7m); Ⅲa, Pinus-Castaneae-Cyclotbalanoopisis (13.7-11.2 m); Ⅲb, Pinus-Microlepia (11.2-10.5m); Ⅲc, Pinus-CycLobanlanoopsis (10.5-7.5m); Ⅳ, Pinus-Pteris-Gamineae(7.5-2.0 m); Ⅴ, Pinus-Microlepiu (2.0-0m). Based on the above statement, 6 phases of climate fluctuation were shown in the past 4 500 years:4.5~3.8kaB. P., warm and wet; 3.8~3.4kaB. P., cool and little dry; 3.4-3. OkaB. P., warm and little dry;around 3. OkaB. P., cool and wei; 2.8-2.3kaB. P., warm and wcl; 2.3kaB. P.-present, fluctuated frequently.
Key words:  Poyang Lake  pollen assemblage  paleoclimate  palcovcgctation
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