中文摘要：

通过对太湖北部TH-004钻孔沉积物磁化率、粒度、色度指标的测试分析，反演区域8000年来沉积环境演变，主要表现为8-7kaBP的温暖湿润阶段，7kaBP以来环境的变冷变干，以及2．6kaBP左右的温度湿度回升。但该变化过程更主要表现为温度的快速冷暖旋回，有效湿度的变化并没有温度变化明显，这可能是由于季风降水变化主要表现在季风影响区的边缘地带，而太湖处于季风区内部，无论东亚夏季风增强或减弱，其有效湿度都不会产生明显变化。在此期间有明显的小尺度突变气候事件，特别是中世纪暖期及小冰期气候寒冷事件，在该项研究中都有很好的体现。

英文摘要：

With the data of magnetic susceptibility, grain size, SCR parameters from the sediments of Hole TH-004 in northern Taihu lake, we recontructed the history of environmental evolution of the lake over the past 8 000 years. The climate has been getting colder and drier since 7 kaBP, excepting a warm and hu- mid stage around 2 kaBP. However, the environmental change was mainly characterized by the rapid war- ming and cooling cycles, and the changes in effective moisture were not significant since the changes in monsoon precipitation were mainly occurred in the periphery of the monsoon-affected zone, and the Taihu Lake was within the monsoon region, where the effective moisture did not suffer significant changes, re- gardless the advanceing or retreating of the East Asian summer monsoon. There were small scale abrupt climate events during this period, such as the Medieval Warm Period and Little Ice Age cold weather e- vents.