利用封闭湖泊流域进行古降水量重建的历史、现状及未来
Past, present and future of Estimates of Paleoprecipation in Closed lake Basin
查看参考文献53篇
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文摘
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回顾了利用封闭湖泊流域进行古降水量重建的简单历史，重点论述了其理论与方法的特点及发展源流；在此基础上，结合作者近几年在青藏高原开展的这方面的研究工作，对季风区进行此项研究的可能方法、理论依据及其初步应用进行了分析，重点阐述了其存在的缺点与不足及未来的改进方式。 |
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其他语种文摘
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This paper reviewed the research situation of estimates of paleoprecipitation in closed lake basin,and on the basis of recent works carried out in the Tibetan Plateau, analysed the method, principle and preliminary results,and gave some advices on the research work in the future. It was Lettau(l969) who first estimated the precipitation of closed lake basin based on the combined hydro-logical and energy balances of Palae-catchment. Then, Kutzbach( 1980) developed two versions of the model; the first version is one in which precipitation and lake area are linearly related, and the second one is the relationship of the precipitation and lake area is nonlinear because the runoff ratio and Bowen ratio of the basin are made functions of precipitation. These studies provide the theoretical framework for estimates of paleoprecipitation from water budget and surface energy budget considerations. Many researchers,such as, Hastenrath et al. ( 1983 ,1985) , Swain et al. ( 1983) , Benson ( 1985) , Adams et al. (1985) ,\vmkler( 1986) ,Fang( 1989) , Wu(1993), Qin( 1993,1997) ,Guo(2000) followed this approach to study many paleolakes worldwide. However,the authors do not think it is appropriate to follow the a-bove researches to ensure the parameters. Thus, a lot of works had been carried out in closed catchments of Asian Monsoon area in the last three years, the authors firsly applied the method of searching-for similar area in present atlas to ensure some parameters, such as, fractional cloud cover, surface albedo, surface vapor pressure, and so on, based on the considerations of water budget and surface energy budget of the whole catchment. In the end, the authors give some advices on improvements of this method. For example, we think it is the combined effect of humidity and temperature of paleoclimate, shown Rb/Sr sediment and salinity of paleolake, that is the best parameters to search for the appropriately similar area. |
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来源
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地理科学
,2004,24(3):376-382 【核心库】
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关键词
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封闭湖泊流域
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地址
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南京大学城市与资源学系区域环境演变研究所, 江苏, 南京, 210093
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语种
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中文 |
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文献类型
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综述型 |
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ISSN
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1000-0690 |
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学科
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自然地理学 |
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基金
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中国科学院知识创新工程重大项目
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中国科学院知识创新工程重大项目
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南京大学博士后科研启动基金
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文献收藏号
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CSCD:1630802
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