新疆伊犁河谷晚全新世以来的风砂沉积与环境演化

陈秀玲; 李志忠; 凌智永; 靳建辉; 曹相东

doi:10.3724/SP.J.1140.2010.06035

新疆伊犁河谷晚全新世以来的风砂沉积与环境演化

陈秀玲^1,2,
李志忠^1,2,3,
凌智永³,
靳建辉^1,2,
曹相东³

1 福建师范大学地理科学学院, 福州 350007;
2 福建省亚热带资源与环境重点实验室, 福州 350007;
3 新疆师范大学地理科学与旅游学院, 乌鲁木齐 830054

基金项目:

国家"十一五"科技支撑计划项目(2007BAC15B07)

新疆维吾尔自治区自然科学基金项目(200821103)

详细信息

作者简介:
陈秀玲(1978-),女,博士,讲师,主要研究方向为第四纪环境演变,E-mail:xiulingchen@163.com

中图分类号: P534
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出版历程
- 收稿日期: 2009-12-21
- 修回日期: 2010-09-12

HOLOCENE AEOLIAN DEPOSITS AND ENVIRONMENTAL EVOLUTION IN YILI VALLEY, XINJIANG

1 Geography Science College of Fujian Normal University, Fuzhou 350007, China;
2 Provincial Key Lab of Subtropical Resources and Environment of Fujian, Fuzhou 350007, China;
3 Geography Science and Tourism College of Xinjiang Normal University, Urumqi 830054, China

摘要

摘要: 通过对新疆伊犁塔克尔莫乎尔沙漠可克达拉剖面(TKP)有机碳(TOC)、氧化铁(Fe₂O₃)及频率磁化率(X_fd)的分析,探讨了新疆伊犁河谷晚全新世以来的气候演变。结果显示:3.71~1.50 kaBP期间该区气候总体上比较干旱,气候干湿变化复杂,并经历了凉湿(3.71~3.06 kaBP)、极端干旱(3.06~2.63 kaBP)和相对湿润(2.63~1.50 kaBP)的演变过程。1.50~0.50 kaBP期间TOC、Fe₂O₃和X_fd的平均含量均达到全剖面的最高值,可能代表着这段时期区域降水比较丰沛,为伊犁河谷地区近4 ka以来气候最为适宜的时期。0.5 kaBP以来,伊犁河谷气候迅速地向干旱化发展。
- 气候变化 /
- 晚全新世 /
- 可克达拉剖面 /
- 新疆伊犁
Abstract: This paper discusses the Late Holocene climate evolution in the Yili Valley of Xinjinag, based on the TOC, Fe₂O₃ and X_fd from the Keledala profile in Takermohur Desert. The result shows that, in the stage of 3.71~1.50 kaBP, the climate in this area, as a whole, was relatively dry and experienced complicated changes. It was cold and humid during the period of 3.70~3.06 kaBP; extremely dry during the period of 3.06~2.63 kaBP, and relatively humid during the period of 2.63~1.50 kaBP. The average contents of TOC, Fe₂O₃ and X_fd reached the peak in 1.50~0.5 kaBP. It indicates that precipitation in this area was relatively high then, and the climate reached the best since 4 kaBP. Since 0.5 kaBP, the Yili valley has remained in drought.
- the Keledala profile /
- Late Holocence /
- climate change /
- Yili of Xinjiang

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