| 河西走廊东段湖泊旋回及其古气候意义 |
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| 引用本文： | 王乃昂,李吉均,穆得芬,高顺尉.河西走廊东段湖泊旋回及其古气候意义[J].湖泊科学,1999,11(3):225-230. |
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| 作者姓名： | 王乃昂 李吉均 穆得芬 高顺尉 |
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| 作者单位： | 兰州大学地理科学系!兰州730000 |
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| 基金项目： | 国家自然科学基金!（49731010），教育部博士点专项科研基金 |
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| 摘 要： | 以河西走廊东段石羊河尾闾青土湖为例，通过对志云村剖面沉各气候记录的研究，证实季风边缘是年以上时间尺度的气候变化，具有暖湿，冷干的阶段性特征。自６０００ａＢＰ以来，河西走廊东段渗湖泊回经历了四次湖退和三次湖进过程。除最后一次湖退直至干涸受人类活动影响较大外，其它主要是气候阶段性变化的结果。
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| 关 键 词： | 全新世 湖泊旋回 气候变化 人类活动 古气候 |
| 收稿时间： | 4/9/1998 12:00:00 AM |
| 修稿时间： | 1998/12/17 0:00:00 |
Lake Cycle and Its Paleoclimatic Significance in Eastern Hexi Corridor |
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| WANG Nai-ang,LI Ji-jun,MU De-fen and GAO Shun-wei.Lake Cycle and Its Paleoclimatic Significance in Eastern Hexi Corridor[J].Journal of Lake Science,1999,11(3):225-230. |
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| Authors: | WANG Nai-ang LI Ji-jun MU De-fen and GAO Shun-wei |
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| Institution: | Deportment of Geography, Lanzhou University, LanZhou 730000,Deportment of Geography, Lanzhou University, LanZhou 730000,Deportment of Geography, Lanzhou University, LanZhou 730000 and Deportment of Geography, Lanzhou University, LanZhou 730000 |
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| Abstract: | A preliminary study on the advance and retreat of Qingtu Lake, Hexi Corridor and the sedimentary chimatic records of Zhiyun Village profile has been made through comprehensive analysis. The study shows that the modes characteristics of climatic change in Eastern Hexi Corridor was provided with the corresponding relationship of warm-moist and cold-dry during the scale longer than hundreds of years. As a result of periodicity of climatic change and human activities, Qingtu Lake cycle has undergone a cycle since 600aBP with four lake-retreat and three lake- advance stages. In brief, the evolution of lakes in Eastern Hexi Corridor is characterized by sedimentary continuity, faster sedimentary rate and higher resolution, which not only can indicate the paleoenvironmental and climatic change in Holocene, but also can reflect the intensity of Eastern Asia monsoon. |
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| Keywords: | Hexi Corridor Holocene lake cycle climatic change human activitiy |
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