古地理学报 ›› 2000, Vol. 2 ›› Issue (2): 84-91. doi: 10.7605/gdlxb.2000.02.009

• 第四纪古地理学及沉积学 • 上一篇    下一篇

内蒙古安固里淖—泊江海子全新世中晚期湖泊沉积及其气候意义

翟秋敏  邱维理  李容全  赵  烨  郑良美   

  1. 北京师范大学资源与环境科学系  北京 100875
  • 出版日期:2000-04-01 发布日期:2000-04-01
  • 作者简介:第一作者简介翟秋敏,女,1973年生,北京师范大学自然地理专业博士生,主要研究方向为第四纪环境。

THE MIDDLE AND LATE HOLOCENELACUSTRINE SEDIMENTS AND ITS CLIMATE SIGNIFICANCE OF
ANGULINAO-BOJIANGHAIZI LAKES,INNER MONGOLIA

Zhai Qiumin  Qiu Weili  Li Rongquan  Zhao Ye  Zheng Liangmei   

  1. Resourse and Enviornment Science Department of Beijing Normal University   Beijing 100875
  • Online:2000-04-01 Published:2000-04-01
  • About author:Zhai Qiumin was born in 1973. Now she is a Ph.D. candidate of physical geography in Beijing Normal University, and is engaged in Quaternary environment.

摘要:

与全新世海面变化相比,内陆封闭湖泊沉积在气候变化研究中更具有优势。对安固里淖和泊江海子两个湖泊的钻孔剖面进行了沉积学分析,结果表明:8400 a BP以来,研究区经历了全新世大暖期的增温阶段(8400~7300 a BP)、鼎盛阶段(7300~6200 a BP)、气候波动阶段(5500~5000 a BP)、亚稳定湿润阶段(5000~3000 a BP)和降温阶段(3000 a BP至今),这与全国其他地区的环境演变过程基本一致;270 a BP(1680 A.D.)以来,研究区气候略向湿润方向转化;本世纪50年代以来,又向干旱化方向发展。

Abstract:

Sedimentological analyses of core sections of the Angulinao and Bojianghaizi Lakes show that the climates of these lakes have experienced several stages during the Megathermal of Holocene:warming during 8.4~7.3 ka BP, stable during 7.3~6.2 ka BP, fluctuation during 5.5~5.0 ka BP, sub stable humid during 5.0~3.0 ka BP and cooling down from 3.0 ka BP to present. The climatic changes in this region coincide with those in other regions of China. In 270 a BP, the climates turned to humid slightly, but since 1950 A.D., the climate becomes drying. Compared with sealevel fluctuation, the sediments in inland closed lakes have more advantages in studying climate change.