摘要
湖水古盐度的定量反演,可以促进过去全球变化研究由定性走向定量。内陆干旱半干旱地区湖泊尤其是封闭湖泊的盐度取决于流域降水,径流和蒸发的平衡关系,并直接表现为湖泊水位的变化。关于湖水的古盐度反演,长期以来已经根据多湖泊沉积环境指标加以揭示,包括湖泊沉积物中介形虫壳体的元素地球化学特性、硅藻-古盐度转换函数、介形虫壳体的形态学特征及其与生长环境的关系以及实验模拟等。各种方法有不同的适用条件和适用范围及一定的局限性,对此做了归纳和评述。
Quantitative reconstruction of lake water palaeo-salinity can urge the past age global environment study （PAGES） from the qualitative to the quantitative. The salinity of the lakes in inland arid and semi-arid regions, especially the closed lakes in mainly dependent on the balance between precipitation, runoff and evaporation. Furthermore, it is directly revealed by the change of the lake water-level. For a long time, many indexes recorded by the lacustrine sediments have been used to reconstruct the lake water palaeo-salinity, including geochemical characteristics of chemical elements from ostracede shells, transformation function between diatom and palaeo-salinity, the relationship of morphological character and living environment of ostracode shells, and experimental simulation. All the methods mentioned above have the different applicable conditions and scopes. And it is summarized in this paper.
出处
《盐湖研究》
CSCD
2007年第4期13-19,共7页
Journal of Salt Lake Research
基金
国家重点基础研究发展规划项目(2004CB720200)
国家自然科学基金项目(40599420
40673012
40571173)
中国科学院地球环境研究所黄土与第四纪地质国家重点实验室基金项目(SKLLQG0713)
湖北省教育厅科学技术研究项目(B200625003)
湖北省高等学校省级教学研究项目(20050291)
关键词
湖泊沉积物
古盐度
定量研究
Lacustrine sediments
Palaeo-salinity
Quantitative research
作者简介
曾承（1975-），男，博士研究生，讲师，主要从事地球化学和环境变化研究。
