地理研究

地理研究 ›› 1995, Vol. 14 ›› Issue (2): 49-55.doi: 10.11821/yj1995020007

• 论文 • 上一篇    下一篇

贵州晴隆碧痕营晚第四系及古环境研究

吴胜光, 韩辉友, 俞锦标   

  1. 南京大学大地海洋科学系 南京 210008
  • 收稿日期:1993-07-04 修回日期:1994-12-21 出版日期:1995-06-15 发布日期:1995-06-15

ANALYSIS OF THE LATE QUATERNARY SEDIMENTS AND PALEOENVIRONMENT IN BIHENYING IN QINGLONG,GUIZHOU PROVINCE

Wu Shengguang, Han Huiyou, Yu Jinbiao   

  1. Department of Geo-ocean Sciences, Nanjing University 210008
  • Received:1993-07-04 Revised:1994-12-21 Online:1995-06-15 Published:1995-06-15

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摘要： 碧痕营洼地中的湖相层是在末次冰期盛冰期之前的温暖期中发育的.时代为距今3万年到2万年前后,当时洼地附近的山地上生长着以落叶阔叶林为主的针阔混交林,小有波动.这一时段,年均气温较今低1-6℃.距今3万年到2.6万年前后,生长含高比例水青冈的针阔混交林,气温较今约低2-6℃;距今2.3万年前后,附近山地生长常绿阔叶、落叶混交林,气温较今约低1-3℃;在距今2.6万年到2.3万年和距今2.3万年以后一段时期,本地区发育针阔混交林;步入盛冰期的过程中,气候转向干冷,蕨类植物蔓生;湖相层之后是混杂泥砾堆积,气温降低幅度更大.

关键词: 碧痕营, 晚第四系, 古环境, 孢粉

Abstract: From 30ka.B.P. to 20 Ka.B.P.,in the warm period before the fullglacial,lacustrinedeposit was formed in the Bihenying basin, in Qinglong county south-west Guizhouprovince. Mixed deciduous broadleaf and coniferous forests were growing on the hilly land,with a small varying between deciduous broadleaf forest and mixed coniferous and deciduousbroadleaf forest. The annual mean tempretrure was 1-6℃ lower than that of today.From 30 Ka.B.P to 26 Ka.B.P.,there were mixed deciduous broadleaf and coniferoustrees with a high proportion of Fagus and a tempreture 2-6℃ lower,Around 23 Ka.B.P.,deciduous and evergreen trees were mixed up, and annual mean tempreture was 1-3℃ lower than that of today.From 26 Ka.B.P. to 23 Ka.B.P.,and after 23 Ka.B.P,deciduousbroadleaf and comiferous three were mixed there. After that peiod climate turned to be dryand cold, pteridophyte grew widely. In the fullglacial period lacustrine deposition stopped,and was replaced by the chaotic sediments of muds and gravels.

Key words: Bihenying, Late guaternary system, Paleoenvironment, Pollen and spore

PACS: 

  • X15