| 近500年来咸海湖泊沉积记录的环境演变 |
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| 引用本文： | 叶尔波拉提,德勒恰提·加娜塔依,William M.Last,方巧,邓宏.近500年来咸海湖泊沉积记录的环境演变[J].沉积学报,2015,33(1):91-96. |
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| 作者姓名： | 叶尔波拉提 德勒恰提·加娜塔依 William M.Last 方巧 邓宏 |
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| 作者单位： | 1.新疆大学地质与矿业工程学院 乌鲁木齐 830047; |
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| 基金项目： | 新疆研究生科研创新项目(编号:XJCRI2013042)资助 |
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| 摘 要： | 过去的五十年里,作为曾经世界第四大湖泊的咸海面积急剧萎缩,环境质量严重下降并对大部分中亚地区造成了灾难性的影响.咸海的水位下降过程虽然历时相对较短却变化显著,为了了解这一变化的详细过程,1997年从咸海北部湖盆采集了AS17孔浅钻岩芯.通过对该岩芯的矿物学、介形虫、孢粉等沉积环境指标综合分析,结果表明岩芯在矿物学特征及生物特征上的一系列显著变化,揭示了过去近500年中咸海的沉积环境经历了含盐量增加-下降-再增加三个明显的阶段,并为15世纪咸海的干旱提供了新的证据.
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| 关 键 词： | 咸海 含盐量 沉积物 矿物学 介形虫 孢粉 |
| 收稿时间： | 2013-11-27 |
Environmental Changes Recorded by Lake Sediments from Aral Sea During Recent 500 Years |
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| YEERBOLATI;DELEQIATI·Jantay;William M. Last;FANG Qiao;DENG Hong.Environmental Changes Recorded by Lake Sediments from Aral Sea During Recent 500 Years[J].Acta Sedimentologica Sinica,2015,33(1):91-96. |
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| Authors: | YEERBOLATI;DELEQIATI·Jantay;William M Last;FANG Qiao;DENG Hong |
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| Institution: | 1.Institute of Geological and Mining Engineering, Xinjiang University, Urumqi, Xinjiang 830047;2.Department of Geological Sciences, University of Manitoba, Winnipeg, Canada, R3T 2N2 |
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| Abstract: | Over the past five decades, the Aral Sea, as the world's fourth largest lake, has a rapid decline of area, a serious decline in quality of the environment and has a devastating impact on most of the Central Asian region. Although the water level of the Aral Sea descent lasted relatively short but had significant changes, in order to understand the detailed process of this change, we collected AS17 shallow drilling core holes from the northern Aral Sea in 1997. Through the comprehensive analysis of mineralogy, ostracods, pollen and other deposits environmental indicators, it shows that the core had a series of significant changes in mineralogical characteristics and biological characteristics, reveals three distinct phases that the Aral Sea depositional environment has experienced during the past nearly 500 years: increase decrease and again increase in salinity, and provides new evidence to the 15th century drought in the Aral Sea. |
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| Keywords: | Aral Sea salinity sediments mineralogy ostracods pollen |
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