| 末次冰期-间冰期蒙古高原与黄土高原对全球变化的重要贡献 |
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| 引用本文： | 冯兆东,陈发虎,张虎才,马玉贞.末次冰期-间冰期蒙古高原与黄土高原对全球变化的重要贡献[J].中国沙漠,2000,20(2):171-177. |
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| 作者姓名： | 冯兆东 陈发虎 张虎才 马玉贞 |
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| 作者单位： | 1. 兰州大学,资源环境学院,甘肃,兰州,730000;Department of Earth and Environmental Studies,Montclair State University,New Jersey,U.S.A
2. 兰州大学,资源环境学院,甘肃,兰州,730000 |
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| 摘 要： | 地球环境－气候系统的长周期变化是随日－地相对位置的周期性变化而变化的。但是仍有１５％～２０％的长周期变化没有得到解释。至于中短周期变化的机制，目前的解释仍然是众说纷纭。与北美冰盖动力相关的北大西洋洋面温度一直被认为是这些中短周期变化的调控仪。然而，赤道太平洋的长周期厄尔尼诺波动被表明是更为有效的调控仪。由于海洋研究的优势地位，陆地的相关研究近２０～３０a来没有得到足够的重视。实际上，陆地下垫 面控
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| 关 键 词： | 第四纪 全球变化 蒙古高原 黄土高原 末次冰期 |
Contribution to Global Change of Mongolian Plateau and Loess Plateau in the Last Glaciation and Interglacial Periods |
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| FENG Zhao-dong,CHEN Fa-hu,ZHANG Hu-cai,MA Yu-zhen.Contribution to Global Change of Mongolian Plateau and Loess Plateau in the Last Glaciation and Interglacial Periods[J].Journal of Desert Research,2000,20(2):171-177. |
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| Authors: | FENG Zhao-dong CHEN Fa-hu ZHANG Hu-cai MA Yu-zhen |
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| Abstract: | It is well known that the long-term variations of the Earth's climate are controlled by the geometric relationships between the Earth and the Sun. However, 15%~20% of the long term variations remain unexplained. As for the short term variations, many hypotheses are circulating. Among them, dominant is the North Atlantic related. It states that the short term variations have been controlled by the variations of the sea surface temperature in the North Atlantic. Nevertheless, variations of sub orbital timescale in ENSO of the Tropical Pacific may be more qualified in modulating the global sub orbital changes. Furthermore, the biggest continent, Eurasia, might have played much more important role than it has been thought. For instance, the changes in both the extent of the arid semiarid areas and the efficiency of atmospheric dust supply from these areas in the east central Asia might have been very significant in affecting the albedo and dust supply to the mid latitude oceans. The albedo controls the temperature and the dust supply modulates the atmospheric CO\-2 level through providing the iron fertilization to nitrogen and carbon fixation that consumes atmospheric CO\-2. |
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| Keywords: | arid area east central Asia quaternary global change |
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