论文部分内容阅读
1992年7月至1997年2月,在国家自然科学基金的资助下,我们组织了“八五”重大项目“我国干旱半干旱区15万年来环境演变的动态过程及发展趋势”的实施,该项目是为参与“古全球变化”的国际竞争而设计的全国性核心项目之一。其主要目标是:在我国干旱半干旱区选择有代表性的环境地质剖面,高分辨率地提取保存在黄土及其他沉积物中的环境信息,重建15万年来环境演变序列及某些典型时段的空间变化幅度,研究环境变迁的动态过程与
From July 1992 to February 1997, with the support of the National Natural Science Foundation, we organized the implementation of the “Eighth Five-Year” Major Project “The Dynamic Process and Trend of Environmental Evolution in 150,000 Years in Arid and Semi-Arid Regions of China” Project is one of the national core projects designed to participate in the international competition of “ancient global change”. Its main objectives are: to select representative environmental geologic sections in arid and semi-arid regions of China, to extract the environmental information preserved in loess and other sediments with high resolution, to rebuild the environmental evolution sequences of 150,000 years and some typical periods The magnitude of space change and the dynamic process of research on environmental change