| 鄱阳湖2000年来的环境演化 |
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| 引用本文： | 吴艳宏,项亮,王苏民,蒋雪中.鄱阳湖2000年来的环境演化[J].海洋地质与第四纪地质,1999,19(1):85-92. |
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| 作者姓名： | 吴艳宏 项亮 王苏民 蒋雪中 |
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| 作者单位： | 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 |
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| 摘 要： | 通过对鄱阳湖中大汊湖ＤＣＨ孔沉积物粒度、磁化率、孢粉、有机碳含量等指标的综合分析，恢复了鄱阳湖２０００年来环境演化过程。研究表明，鄱阳湖经过多次扩张，形成如今的格局。约在１５００ａＢ．Ｐ．前后水面由北向南扩张至大汊湖附近。大汊湖由古赣江河流洼地（１５００ａＢ．Ｐ．前）发展为赣江三角洲分流间洼地。该地区气候的变化经历了多次波动，９００ａＢ．Ｐ．以前偏干，气温略高于后期；９００ａＢ．Ｐ．以后偏湿，在４５０ａＢ．Ｐ．前后温度偏低。鄱阳湖人类活动出现较早，人类活动随自然环境的变化在湖泊沉积物中有所反映。
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| 关 键 词： | 2000年来 环境演化 鄱阳湖 |
PALEOENVIRONMENTAL DEVELOPMENT IN THE PAST 2 000 YEARS IN POYANG LAKE |
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| WU Yanhong,XIANG Liang,WANG Sumin,JIANG Xuezhong.PALEOENVIRONMENTAL DEVELOPMENT IN THE PAST 2 000 YEARS IN POYANG LAKE[J].Marine Geology & Quaternary Geology,1999,19(1):85-92. |
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| Authors: | WU Yanhong XIANG Liang WANG Sumin JIANG Xuezhong |
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| Abstract: | Poyang Lake is the largest fresh water lake of China,and is a concentrating place of human activity in the history.Based on comprehensive analysis on environmental proxies(pollen assemblage,magnetic susceptibility and content of organic carbon etc.),we have reconstructed the paleoenvironmental process in the past 2 000 years in this area,and probed into the interactions between human activity and environment.As Poyang Lake enlarged from north to south,sedimentary environment changed from interchannel depression(1 500aB.P.)to distributary depression.Paleoclimate has undergone several variations,dry and warm before 900aB.P.,wet after 900aB.P.and relatively cold around 450aB.P.Human activity emerged in this area early and was reflected by sediment environmental proxies clearly. |
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| Keywords: | past 2 000 years paleoenvironment Poyang Lake |
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