Abstract: The discovery of the Holocene lacustrine sediment in the Central North Chin a has provided acceptable records of the paleoenvironment during approximately 5660 aBP to 3500 aBP. The vertical distribution and fluctuation of aquatic, amphibian and terrestrial mollusks remains in Sihenan Profile represent the physical environmental history of this area. The process of birth, expansion, and vanishment of the ancient lake was well recorded through the presence and absence of aquatic species. And from the abundance variation of hygrophilous-warmthand moisture-loving species, It can be known that the Central North China was warmer and moister than the present during the period of 5000 aBP to 4000 aBP.

Key words: Central North China, Holocene, lacustrine sediment, mollusks fossils

摘要： 河南孟津邙山黄土台塬上发现的全新世湖沼沉积保存有丰富的古环境信息。根据其中所含水生、两栖与陆生软体动物化石的系统研究，作者着重讨论了距今5000-4000年间古代湖沼演化的历史，并进一步根据软体动物化石的古生态分析，指出古代湖沼的演化与当时气候的变化一致。这一研究为探讨中原地区环境演变的历史及华夏文明起源的环境背景提供了重要的资料。

关键词: 中原, 全新世, 湖沼沉积, 软体动物化石