中文摘要：

根据泥炭表土植硅体分析和气候气象资料，运用因子分析和逐步回归分析方法建立了东北地区泥炭表土植硅体-气候因子转换函数；并将之用于榆树泥炭剖面的古气候参数重建中，得出近3000a来的古气候参数值，并将之暖-冷-暖-冷-暖-冷-暖7个阶段。计算结果同时显示，温暖湿润的气候往往与稳定的气候系统相一致，而且古年均风速的变化可能预示着古气温、古降水变化等将随之发生变化。

英文摘要：

On the basis of phytolith assemblages from peat surface deposits and some climate indexes, a transfer function of phytolith-climate in Northeast China is established by means of factorial analysis and stepwise regression. Using the function, paleo-climate parameters of Yunshu peat profile were calculated and the paleo-climate evolution is then divided into 7 stages： warm-cold-warm-clod-warm-cold-warm. The reconstructed curves also show that the changes of paleo-annual wind speed might indicate the following changes of paleo-temperature and paleo- precipitation, and the warm and wet climate always corresponds with a stable climate system.