作　　者： ;

机构地区： 兰州大学资源环境学院地理科学系

出　　处： 《干旱区地理》 1993年第4期38-44,共7页

摘　　要： 本文应用因子分析法对巴里坤潮相沉积物的多种地球化学元素进行归纳和整理,得到反映气候状况的地球化学元素和氧化物类。表明沉积地层学特征同样具有显示古气候特征的同步变化现象。 According to the inducted and sorted data of geochemical elements in the lacustrine sediments of Barkol Lake with the factor analyzing method,the content variation of geochemical elements possesses a clear indicative significance for paleoclimatic evolution. Comprehensively compared with the sporepollen data, lithological feature and dendrologic analyzing results, the area of Barkol Lake has experienced 4 cold—moisture climatic periods: 1564—1588 A. D., 1620—1710 A. D. , 1840—1910A. D., 1970—1980A. D.; and 4 warm—dry periods: 1588—1628A. D., 1710—1840 A. D., 1910—1968 A. D. and after 1980s since last 500 years. This climatical evolution pattern coincides with that of other areas in China.

关 键 词： 古气候 地球化学元素 湖相沉积

领　　域： [天文地球] [天文地球]