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SCIENTIA SINICA Terrae, Volume 49, Issue 8: 1308-1320(2019) https://doi.org/10.1360/N072018-00020

中国南方植被的变化

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  • ReceivedMay 16, 2018
  • AcceptedApr 28, 2019
  • PublishedMay 30, 2019

Abstract

为揭示自末次盛冰期以来中国南方植被的变化规律, 文章在前人工作的基础上, 通过在一些研究薄弱区布钻取芯, 建立钻孔剖面高分辨率的时间标尺和孢粉序列, 以恢复研究区过去约2万年以来的植被变化过程. 文中分别给出中国南方18、9和6ka BP前后的植被分带图和各区域植物的分布特征. 研究表明: 18ka BP前的植被带分布与现在存在着明显的差异, 其中西部由西北向东南依次为寒温性针叶林与高寒草甸草原带、温带针阔叶混交林带/暖温带落叶阔叶林带, 中东部由北向南依次分布温带针阔叶混交林带、暖温带落叶阔叶林带, 以及北亚热带常绿、落叶阔叶混交林带; 9ka BP前后的植被面貌发生了明显的变化, 除西北部局部地处山地温性针阔叶混交林带外, 其他地区由北向南依次分布北亚热带常绿、落叶阔叶混交林亚带, 中亚热带典型常绿阔叶林亚带, 南亚热带季风常绿阔叶林亚带/热带季雨林和雨林带; 6ka BP前后的植被面貌与9ka BP前后的变化不大, 但各个植被带的北缘略有北移, 反映当时总体气候变得更加温暖. 中国南方2万年以来的植被变化, 很大程度上受到环境变迁的驱使, 其中气候变化为主要影响因素, 人类活动的影响在后期变得越来越明显, 而在长江下游和三角洲地区, 海平面变化对植物的分布同样构成一定的影响.


Funded by

中国科学院战略性先导科技专项项目(XDA05120100,XDB26000000)

国家自然科学基金项目(41771219,41371207,41472010)


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  • 图 1

    新增钻孔和主要文献钻孔地理位置图

  • 图 2

    中国南方植被分带图

  • 表 1   新增钻孔剖面信息汇总

    钻孔地点

    坐标

    海拔(m)

    厚度(cm)

    14C年龄跨度(cal a BP)

    伍须海

    29°09′11.5″N

    101°24′21.6″E

    3625

    1100

    0~12211

    泸沽湖

    27°43′08.4″N

    100°46′33.9″E

    2690

    1000

    0~31225

    腾冲青海湖

    25°07′56.8″N

    98°34′19.2″E

    1885

    832

    0~18200

    星云湖

    24°21′33.4″N

    102°47′11.1″E

    1722

    754

    0~27263

    袍烈

    23°26′19.3″N

    107°43′33.6″E

    210

    153

    0~7000

    大平塘

    25°68′58.0″N

    109°97′73.0″E

    1282

    373

    0~5500

    炎陵

    25°24′40.3″N

    109°04′41.2″E

    1770

    150

    0~14200

    鄱阳湖

    28°59′47.6″N

    116°29′07.9″E

    17

    1080

    0~8595

    南漪湖

    31°09′21.0″N

    119°03′16.2″E

    0

    650

    0~15745

    湘湖

    30°08′37.2″N

    120°12′45.9″E

    4

    2300

    7360~28390

    东钱湖

    29°46′35.9″N

    121°37′29.7″E

    2

    2492

    8700~9325

    定南

    24°45′24.3″N

    115°02′11.7″E

    267

    792

    0~36255

    铭爱村

    25°40′04.4″N

    118°07′44.0″E

    1071

    370

    0~43500

    湖光岩

    21°08′43.0″N

    110°16′48.6″E

    23

    2200

    0~42000

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