| 塔克拉玛干沙漠北部全新世环境演变(Ⅰ) |
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| 引用本文： | 冯起,陈广庭,朱震达.塔克拉玛干沙漠北部全新世环境演变(Ⅰ)[J].环境科学学报,1996,16(2):238-244. |
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| 作者姓名： | 冯起 陈广庭 朱震达 |
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| 作者单位： | [1]中国科学院冰川冻土研究所 [2]中国科学院兰州沙漠研究所 |
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| 摘 要： | 通过对塔克拉玛干沙漠北部，塔里木河泛滥平原典型剖面的沉积物粒度特征、化学元素的变化和沉积相特征的研究，并结合＾１４Ｃ测年、揭示了本区域全新世以来的环境变化规律，本区全世以来的多风、高温、干燥的气候形成是以全球气体波为背景，叠加内陆干旱封闭贫地影响而成的，但在干燥气条件下曾有过几次空气湿度较大的偏湿期，本区沉积相主要以充冲积作用形成的粘土层和风力作用下的风砂层为主，剖面中的亚粘土与现代河流相特征一致
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| 关 键 词： | 塔克拉玛干 全新世 沉积相 环境演变 沙漠 |
| 收稿时间： | 1994/10/2 0:00:00 |
AN EVOLUTION OF HOLOCENE ENVIRONMENT IN THE NORTH OF TAKLIMAKAN DESERT |
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| Feng Qi,Chen Guangting and Zhu Zhenda.AN EVOLUTION OF HOLOCENE ENVIRONMENT IN THE NORTH OF TAKLIMAKAN DESERT[J].Acta Scientiae Circumstantiae,1996,16(2):238-244. |
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| Authors: | Feng Qi Chen Guangting and Zhu Zhenda |
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| Institution: | Institute of Glaciology and Geocryology, Chinese Academy of Sciences, Lanzhou 730000,Institute of Desert, Chinese Academy of Sciences, Lanzhou 730000 and Institute of Desert, Chinese Academy of Sciences, Lanzhou 730000 |
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| Abstract: | By analyzing the characteristics of granular, change in chemical composition of Xiao Tang Section, and determination of the layer ages, the evolution of Holcene environment in the north of Taklimakan desert and the characteristics of sediment were revealed. The cold-dry and high temperatrue-dry climate since Holocene were created under the background of global climate with impact of local destert landscape. Several short humid-period with high air-humidity occurred during that period. The sediment consist of clay and sandlayer. Since Holcene, three fulvial flowages can be identified. Water of river was mainly affected by mountatin rainfall and melting of ice. |
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