中文摘要：

本文主要根据西藏扎布耶湖区SZK02孔所揭露的近84m剖面的沉积物特征与其产的介形类6属20种,轮藻类2属3种,结合14C、ESR、U-series地层测年等,初步认为该区128～1.4ka至少存在5个较明显的气候变化时期。①在128～76.7ka（83.63～57.0m）处于我国末次间冰期时段,气候凉湿,湖盆扩展,在90～81ka期间湖面最高,水质最淡。②76.7～58.6ka（57.0～38.13m）为我国末次冰期早冰阶时期,湖盆收缩,水温低,早期76.7～69.7ka（57.0～47.5m）偏冷湿,中期69.7～65.0ka（47.52～42.64m）气候温干,正逢早冰阶时期;晚期65.0～58.6ka（42.64～38.13m）气候干燥度下降。③58.6～29.1ka（38.13～13.75m）处于我国末次冰期间冰阶时段,早期58.6～51.6ka（38.13～33.07m）偏温湿,为3c暖期;中期51.6～42.5ka（33.07～26.13m）气候干冷,为3b冷期,正临末次冰期中冰阶时;晚期42.5～36.0ka（26.13～20.16m）偏凉湿,湿度更大,再次出现高湖面,为3a暖期;末期36.0～29.1ka（20.16～13.75m）,趋向温干。④29.1～11.8Cal.ka（13.75～4.83m）,气候趋向干冷,处于末次盛冰期（LGM）、末次晚冰阶时期,湖盆萎缩,水温低。早期29.1～16.6Cal.ka（13.75～6.98m）偏温湿;晚期16.6～13.1Cal.ka（6.98～5.76m）寒冷干燥;至末期13.1～11.7Cal.ka（5.76～4.83m）,进一步干燥寒冷,全球新仙女木事件在本区发生。⑤11.7～1.4Cal.ka（4.83～0.65m）,大致进入全新世气候期,气候波动大,凉湿与干冷交替频繁发生。在11.7～10.7Cal.ka（4.83～4.42m）时较温湿;10.7～9.5Cal.ka（4.42～4.07m）转向干冷;9.5～9.1Cal.ka（4.07～3.7m）更干冷,湖盆进一步萎缩;9.1～6.3Cal.ka（3.7～2.86m）向温干过渡;6.3～3.6Cal.ka（2.86～1.77m）干冷,湖泊已成盐湖;3.6～1.4Cal.ka（1.77～0.65m）,气候趋向冷湿。

英文摘要：

This paper introduces the characteristics of sediments and their contained 6 genera and 20 species of ostracods and 2 genera and 3 species of charophytes revealed by nearly 84 m deep well SZK02 drilled in the Zabuye Lake area, Tibet. Based on these, combined with ^14C, ESR and U-series dating, the authors preliminarily think that more than five stages with the distinctive characteristics of climatic change occurred in the area at 128-1.4 ka BP. Stage 1 （ca. 128-76.7 ka BP; 83.63-57 m） ： The first stage occurred in the last interglacial period of China, when the climate was cool and wet and the lake basin expanded. At 92-81 ka BP, the lake had the highest level with the freshest water. Stage 2 （ca. 76.7-58. 6 ka BP; 57-38. 13 m）： It occurred in the early glacial stadial of the last glacial period, when the lake basin shrank and the water temperatures were low. In the early interval 76.7 -69.7 ka BP （57.0-47.6 m）, the climate was slightly cold-wet; the middle interval 69.7-65.0 ka BP （47.6-42.6 m） fell on the early glacial stadial with a warm-dry climate; and in the late interval 65.0- 58.6 ka BP （42.6-38.13 m）, the climatic aridity decreased. Stage 3 （ca. 58. 6-29.1 ka BP; 38. 13-13.75 m）： This stage occurred in the interglacial stadial of the last glacial period of China. The early interval 58. 6-51.6 ka BP （38. 13-33. 07 m） was equivalent to mild phase 3c of the interglacial stadial of China, when the climate was slightly warm-wet; the middle interval 51.6-42.5 Ka （33.07-26.13 m） was cold phase 3b, just falling on the middle glacial stadial of the last glacial period, when the climate was dry-cold; and the late interval 42.5-36. 0 ka BP （26.13- 20.16 m） witnessed a slightly cool-wet climate with a much higher humidity and a higher lake level, which was equivalent to mild phase 3a. In the last interval 36.0-29.1 ka BP （20.16-13.75 m）, the climate tended to be warm-dry. Stage 4 （ca. 29.1-11.8 Cal. ka BP; 13.75-4.84 m）： The stage occurred in the Last G