地理科学 ›› 1995, Vol. 15 ›› Issue (1): 39-46,99.doi: 10.13249/j.cnki.sgs.1995.01.39

• 论文 • 上一篇    下一篇

新疆艾比湖全新世沉积特征及古环境演化

吴敬禄   

  1. 中国科学院南京地理与湖泊研究所, 南京210008
  • 收稿日期:1993-02-01 出版日期:1995-01-20 发布日期:1995-01-20

CHARACTERS OF THE EVOLUTION OF CLIMATE ANDENVIRONMENT DURING THE LAST 10ka YEARSIN AIBI LAKE BASIN, XINJIANG

Wu Jinglu   

  1. Nanjing Institute of Geography and Limnology, Academia Sinica, Nanjing, 210008
  • Received:1993-02-01 Online:1995-01-20 Published:1995-01-20

摘要: 运用沉积地层学、地球化学和生物地层学方法分析了艾比湖沉积剖面,结合测年资料,重建了湖区全新世古气候的演化序列.

Abstract: On the basis c’f lacustrine sedimentary profile of Aibi Lake, sequences of evolution of paleoclimate and paleoenvironment in Aibi Lake area have been rebuilt by analysing the sedimentary stratigraphy, bio-stratigraphy and geochemistry as well as the chronological records.The results show that, during the last 10ka years, the general change trends of the paleoclimate in Aibi Lake area can be divided into three stages;(1)10.2ka-8.3kaB.P., a warm-cool dry climate stage; (2)8.3ka-3.5kaB.P., a warmer moist climate stage (specially, 7.3ka-6.4kaB.P.,a relatively stable humid temperate stage); (3) 3.5kaB.P.-present, a draught temperate climate stage, similar to the present climate.In addition, there existed clearly several times of secondary undulations of dry-humid climate,i.e.8.3ka and 7.3ka for dry climate.