CAJ | 학술논문

以腾格里沙漠西北缘青土湖钻孔ZK1为研究对象，通过对钻孔沉积物的光释光年代、粒度、磁化率等研究，揭示了该湖泊自中更新世晚期以来的环境变迁。研究结果表明：该地区中更新世晚期经历了干冷→暖湿两个阶段，晚更新世经历了湿暖→干冷两个阶段，与深海氧同位素的末次间冰期、末次冰期气候旋回特征吻合，全新世主要经历了干冷→暖湿的气候波动。反映了腾格里沙漠西北缘晚第四纪的气候波动变化特征，特别是为本区中更新世晚期以来的气候环境变化的研究提供了依据。
이등격리사막서북연청토호찬공ZK1위연구대상，통과대찬공침적물적광석광년대、립도、자화솔등연구，게시료해호박자중경신세만기이래적배경변천。연구결과표명：해지구중경신세만기경력료간랭→난습량개계단，만경신세경력료습난→간랭량개계단，여심해양동위소적말차간빙기、말차빙기기후선회특정문합，전신세주요경력료간랭→난습적기후파동。반영료등격리사막서북연만제사기적기후파동변화특정，특별시위본구중경신세만기이래적기후배경변화적연구제공료의거。
Based on the analyses of sediment,OSL dating,grain size,magnetic susceptibility of lake sediments from core ZK1 in Qingtu Lake,the northwestern margin of Tengger desert,this paper reconstructs the history of lake evolution since late Middle Pleistocene.The results indicate that Qingtu Lake experienced dry-cold and warm-wet climates in Middle Pleistocene,warm-wet and dry-cold climates in Late Pleistocene,which is accor-ded with climate cycle characteristics of the last glaciation and last interglaciation in MIS.Meanwhile,Qingtu Lake experienced the evolutions of the dry-cold and warm-wet climate in the Holocene.Therefore,this study reflects the evolutions of climate in the northwestern margin of Tengger desert during Late Quaternary and pro-vides the basis for Qingtu Lake's climatic and environmental evolutions since late Middle Pleistocene.