全球变化研究

气候环境变化的湖泊沉积学响应

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  • ①南京大学地球科学系成矿作用国家重点实验室,江苏 南京 210093;②中国科学院南京地理与湖泊研究所,江苏 南京 210008
李玉成,男,1963年2月生,博士后,副研究员,从事同位素和沉积环境研究。

收稿日期: 1998-09-28

  修回日期: 1999-03-09

  网络出版日期: 1999-08-01

基金资助

本文得到中国科学院南京地理与湖泊研究所湖泊沉积开放实验室和中国博士后科学基金资助。

THE LAKE SEDIMENTS RESPONSES TO ENVIRONMENTAL AND CLIMATIC CHANGE

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  • ①Department of Earth Sciences,Nanjing University,Nanjing 210093,China;②Nanjing Institute of Geography&Limnology,Chinese Academy of Sciences,Nanjing 210008,China

Received date: 1998-09-28

  Revised date: 1999-03-09

  Online published: 1999-08-01

摘要

湖泊沉积可作为气候和环境变化的信息库,它能提供时间分辨率高达百年至十年的气候变化信息。湖泊沉积能灵敏地反映与地球轨道力变化相关的气候效应,以及在此背景上叠加的非线性气候事件。湖泊沉积与其中的古生物组合、元素同位素组成是古气候环境的重要替代指标,为检验大气动力学气候模型和进一步改进模型,预测未来气候提供了依据。

本文引用格式

李玉成,王苏民,黄耀生 . 气候环境变化的湖泊沉积学响应[J]. 地球科学进展, 1999 , 14(4) : 412 -416 . DOI: 10.11867/j.issn.1001-8166.1999.04.0412

Abstract

The relative significance of the 20th-century climatic and environmental changes must be assessed from the long-term global-scale perspective available from a spectrum of proxy histories,including those from lake sediments. Lake sediments are sensitive to palaeoclimatic and palaeoenvironment change and record quantitative information about the processes and forcing factors responsible for producing both abrupt and long-term climate variation. Lake sediments also offer the best potential for a comprehensive interhemispheric comparision with a temporal resolution of decades-to-centuries .In many cases new geochemical proxies (biogenic carbonate, biogenic silica, organic matter indices) are needed to supplement the established use of stable isotope analyses for palaeotemperature and palaeohydrological modeling to understand the past environment conditions and evaluate predicative models of climate.

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