摘要
内蒙岱海是位于东南季风区的西北边缘的内陆封闭湖泊，对气候变化十分敏感。本文根据对岱海湖泊岩芯的碳酸盐含量分析，结合湖泊沉积岩性特征、介形类化石以及其年代学研究，初步讨论了岱海距今近千年的气候环境演化过程，结果表明：９３０ａＢＰ—６７０ａＢＰ气候以温湿为主，６７０ａＢＰ—５４０ａＢＰ，气候以冷偏湿为主；５４０ａＢｐ—４９０ａＢ．Ｐ．湖泊急剧退缩，以冷偏干气候为主；４９０ａＢｐ—２７０ａＢＰ以凉干气候为主；２７０ａＢＰ－１５０温干气候；１５０年以来，湖区有效降水有所增加的温偏湿气候为主。
Daihai Lake, with a closed drainage basin, is very sensitive to the paleoclimate hange. The paleoclimatic change will bring about changes in lake level, salinity of lake water ionic composition, and Carbonate content of the sediments, which may be recorded ill the lake sediments. According to the vertical distribution of carbonate content and the characteristics of lithology in Daihai Lake, the paleoclimatic evolution of this region over the past thousand years has been reconstructed.
出处
《海洋湖沼通报》
CSCD
北大核心
1999年第4期21-26,共6页
Transactions of Oceanology and Limnology
基金
国家自然科学基金!49702028
