| 云南属都湖近百年环境演变的湖泊沉积记录与器测资料对比研究 |
| |
| 引用本文： | 姚远,张恩楼,沈吉,蒋庆丰.云南属都湖近百年环境演变的湖泊沉积记录与器测资料对比研究[J].沉积学报,2008,26(2):294-299. |
| |
| 作者姓名： | 姚远 张恩楼 沈吉 蒋庆丰 |
| |
| 作者单位： | 中国科学院南京地理与湖泊研究所,南京,210008;中国科学院研究生院,北京,100049;中国科学院南京地理与湖泊研究所,南京,210008 |
| |
| 基金项目： | 国家自然科学基金
,
国家自然科学基金 |
| |
| 摘 要： | 通过对属都湖湖心钻取的短岩芯Esdr1进行放射性核素137Cs和常规的元素分析，利用137Cs建立精确的年代标尺，开展地球化学记录环境演变与器测资料的对比研究。器测资料表明，近50年来，该地区主要的气候变化特征:1958～1983年，气候偏冷湿；1983～2002年，气候逐渐暖干化，这些气候波动特征被沉积岩芯忠实记录。研究表明属都湖沉积物地球化学代用指标指示的气候演化特征与器测资料可很好的对比印证，属都湖沉积岩芯完整的记录了区域气候变化的信息
|
| 关 键 词： | 湖泊沉积 地化指标 环境演变 器测资料 |
| 文章编号： | 1000-0550(2008)02-0294-06 |
| 收稿时间： | 1900-01-01 |
| 修稿时间： | 2007年4月17日 |
Study on the Climate Evolution Comparing Meteorological Observation and Sediment Core During the Past 80 Years in Shudu Lake, Yunnan Province |
| |
| YAO Yuan,ZHANG En-lou,SHEN Ji,JIANG Qing-feng.Study on the Climate Evolution Comparing Meteorological Observation and Sediment Core During the Past 80 Years in Shudu Lake, Yunnan Province[J].Acta Sedimentologica Sinica,2008,26(2):294-299. |
| |
| Authors: | YAO Yuan ZHANG En-lou SHEN Ji JIANG Qing-feng |
| |
| Institution: | 1.Nanjing Institute of Geography and Limnology, Chinese Academy of Scienses, Nanjing 210008;2.Graduate School of Chinese Academy of Sciences, Beijing 100049) |
| |
| Abstract: | A short sediment core Esdr1 from Shudu lake has been analysed of geochemistry elements and radionuclides. Accurate sediment chronology was established by 137Cs. Meteorological observation records reveal that climate changes experience two stages during past 44 years in the region of Shudu: a cold/wet stage during 1958～1983 a B.P, a warm/dry stage between 1983 and 2002. Climate changes reconstructed by Esdr1 core geochemical proxies are consistent with Meteorological observation records. Sediment in Shudu Hai documented in detail Regional climate changes and human activities which mean that the sediment from this lake could be the suitable archive for environment changes reconstruction in this region. |
| |
| Keywords: | lake sediments geochemical proxies environmental changes meteorological observation |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《沉积学报》浏览原始摘要信息 |
| 点击此处可从《沉积学报》下载免费的PDF全文 |
