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中国沙漠 ›› 1996, Vol. 16 ›› Issue (4): 338-344.

• 研究论文 • 上一篇    下一篇

松嫩沙地晚更新世以来的孢粉记录及古植被古气候

李宜垠, 吕金福   

  1. 东北师范大学地理系, 长春 130024
  • 收稿日期:1996-01-24 修回日期:1996-05-15 出版日期:1996-12-20 发布日期:1996-12-20
  • 作者简介:李宜垠,男,1963年生,理学硕士。主要从事孢粉、藻类及环境变迁方面的科研和教学工作。
  • 基金资助:
    国家自然科学基金资助项目(49171060)

THE SPORO POLLEN RECORDS AND VEGETATION AND CLIMATE HISTORY IN SONGNEN SANDY LAND SINCE EPIPLEISTOCENE

Li Yiyin, Lu Jinfu   

  1. Department of Geography, Northeast Normal University, Changchun 130024
  • Received:1996-01-24 Revised:1996-05-15 Online:1996-12-20 Published:1996-12-20

摘要: 松嫩沙地的形成演化经历了一个漫长的地质历史过程, 孢粉记录反映出这个地区从晚更新世以来植被曾被发生过多次更替, 经历了半荒漠(半荒漠草原)→疏林草原→干草原的演替, 气候经过多次冷暖-干湿波动, 沙漠化也经历了多次扩张和收缩。与中国北方其它沙漠化土地一样, 气候变干是松嫩沙地形成和扩张的决定因素, 而人类的各种活动对这一地区的土地沙漠化起着诱发和促进作用

关键词: 松嫩沙地, 晚更新世, 孢粉记录, 古环境

Abstract: Located on the semiarid-semihumid fringe in the north of China, the Songnen sandy land has plenty of precipitation comparing with other desertified lands of China. Therefore its environment is sensitive to change. The formation and development of Songnen sandy land have a long geologic and historic processes. The sporo-pollen records of this region indicate that the vegetation in this area has a succession of semidesert(semidesert grassland) →grassland→sparse woods grassland→dry grassland, and the climate has been changing between cold(dry) and warm(wet), along with which the desertified land expanded or reduced since Epipleistocene. Similar to other desertified lands of North China, the Songnen sandy land formed under the dry-cold climate and the desertification was induced and aggravated by human activities.

Key words: Songnen Sandy Land, Epipleistocene, Pollen and spore record, Paleoenvironment