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当前位置: 首页 > 文章 > 乌鲁木齐河下游地区湖泊沉积物的粒度特征与沉积环境 干旱区研究 2000,17 (3) 1-5
Position: Home > Articles > Grain-size Characteristics and Sedimentary Environment in the Lacustrain Deposit of Downstream Area in Wulumuqi River Since 30kaBP Arid Zone Research 2000,17 (3) 1-5

乌鲁木齐河下游地区湖泊沉积物的粒度特征与沉积环境

作  者：
李志忠;海鹰;罗若愚;周勇;张秋菊
单  位：
新疆师范大学地理系
关键词：
乌鲁木齐河;东道海子;粒度参数;沉积环境
摘  要：
根据乌鲁木齐河下游尾闾湖泊东道海子钻孔沉积物1 4 C年代和粒度分析 ,表明沉积物的粒度特征随着入湖水量的波动而发生有规律的变化。最近 30kaBP以来该钻孔基本上处于比较稳定的湖泊沉积环境 ,说明东道海子至少有 3万年的发育历史 ,这也说明古尔班通古特沙漠边缘地带的纵向沙垄具有相当程度的稳定性。最近几十年的湖泊变干、环境退化过程主要是人类活动造成的。
译  名：
Grain-size Characteristics and Sedimentary Environment in the Lacustrain Deposit of Downstream Area in Wulumuqi River Since 30kaBP
作  者：
Li Zhizhong Hai Ying Luo Ruoyu Zhou Yong Zhang Qiuju (Department of Geography, Xinjiang Normal University, Urumuqi 830054)
关键词：
Wulumuqi River, Dongdaohaizi Lake, grain-size parameters, sedimentary environment
摘  要：
On the basis of grain-size analysis of the lacustrine deposit collected from the downstream area in Wulumuqi River, this paper studied the relationship between the grain-size parameters of the deposits and the sedimentary environment of the lake. The conclusions are as follows. From tope to bottom, it is positive that the samples of this core are lacustrine deposits, and Dongdaohaizi Lake has a history more than thirty thousand years at least. These results also illustrated that the longitudinal dunes are highly stable in edge of Gurbuntunggut Desert. And recent years, the lake dries gradually and its environment degenerates increasingly, which resulted obviously from human activities.

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