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根据青藏高原东部兴措湖沉积物总有机碳和有机碳同位素,以及腹足类Gyraulus sibirica壳体同位素和微量元素的分析,并与器测资料对比,分别建立了壳体氧同位素与夏半年气温、壳体Sr/Ca比与夏半年降水量间的函数关系.在此基础上,对研究区近0.2ka来的气温和降水变化进行了定量恢复.结果表明:（1）壳体Sr/Ca比与夏半年的降水量呈负相关,相关系数0.86;（2）壳体δ18O与夏半年滑动平均气温为正相关,相关系数0.89;（3）近0.2ka来夏半年气温和降水的变化明显存在有3个阶段,其中19世纪中后期降水量比现代高约220mm,夏半年气温比现今低约2℃;而20世纪最大降温时段降水量比现今低约60mm,夏半年气温比现代低约3℃;（4）近0.05ka来,研究区的气候呈现明显的暖干化趋势.
Based on the analysis of total organic carbon and organic carbon isotopes in the sediments and the isotopes and trace elements in the gastropod Gyraulus sibirica shell in the eastern Xingtu Lake of the Qinghai-Tibet Plateau, the oxygen isotopes of the shell and the summer half-year temperature , The Sr / Ca ratio of the shell and the precipitation in the summer of half year, and on the basis of which, the temperature and precipitation in the study area were quantitatively recovered in the past 0.2 ka.The results showed that: (1) Sr / Ca The correlation coefficient is 0.86; (2) There is a positive correlation between the δ18O in summer and the sliding average temperature in summer in summer, and the correlation coefficient is 0.89; (3) The temperature and precipitation in summer are obviously changed in the past 0.2 ka There are three stages, of which the mid-19th century precipitation is about 220mm higher than the modern, the summer half-year temperature is about 2 ℃ lower than the current temperature; while the maximum cooling period in the 20th century, precipitation is about 60mm lower than in the present, 3 ℃; (4) Nearly 0.05 ka, the climate in the study area shows obvious warming and drying trend.