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青海湖近800年来沉积物介形虫Li/Ca比值的古环境指示意义
朱正杰; 李航; 任世聪; 陈敬安; 李键; 曾艳; 王敬富; 漆亮
2010
Source Publication海洋地质与第四纪地质
Issue4Pages:115-121
Other Abstract当前古气候研究的热点是获取最近2000a来连续的高分辨率自然记录。为了解决湖泊沉积代用指标中古温度指标的难题,通过对青海湖沉积物单一种属介形虫壳体胖真星介(Eucyprisinflata)Li/Ca比值的测定,结合已有的210Pb和137Cs测定的沉积物沉积速率[1],成功恢复了青海湖底层水的古温度变化序列。将Li/Ca比值曲线与气象记录以及邻近地区都兰和祁连山树轮宽度指数恢复的温度变化序列对比,发现介形虫壳体Li/Ca比值与温度呈明显的负相关变化,Li/Ca比值高,温度低,Li/Ca比值低,温度高,表明介形虫Li/Ca比值是一种有效的古温度指示剂。
Keyword胖真星介 Li/ca比值 温度 有效代用指标 青海湖
Subject Area环境地球化学
Indexed ByCSCD
Language中文
CSCD IDCSCD:3982846
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Document Type期刊论文
Identifierhttp://ir.gyig.ac.cn/handle/352002/6852
Collection环境地球化学国家重点实验室_环境地球化学国家重点实验室_期刊论文
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GB/T 7714
朱正杰,李航,任世聪,等. 青海湖近800年来沉积物介形虫Li/Ca比值的古环境指示意义[J]. 海洋地质与第四纪地质,2010(4):115-121.
APA 朱正杰.,李航.,任世聪.,陈敬安.,李键.,...&漆亮.(2010).青海湖近800年来沉积物介形虫Li/Ca比值的古环境指示意义.海洋地质与第四纪地质(4),115-121.
MLA 朱正杰,et al."青海湖近800年来沉积物介形虫Li/Ca比值的古环境指示意义".海洋地质与第四纪地质 .4(2010):115-121.
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