采用扫描电镜观察及理化分析技术 ,从辛庄子沙丘黑砂土剖面中提取出古气候信息 ,综合研究得出 :在 110 0 0～ 830 0aBP期间 ,本区经历了 2个大的气候阶段 ,即 110 0 0～ 10 0 0 0aBP的相对干旱期和 10 0 0 0～ 830 0aBP的相对湿润期 ,但湿润程度不及 80 0 0～ 6 0 0 0aBP .这可与相邻地区同期的气候波动记录进行对比 Paleoclimate information was extracted from the black sand soil profile of Xinzhuangzi sand dune by scanning electron microscopy and physical and chemical analysis techniques. The comprehensive study shows that during the 110 0 0 ~ 830 0aBP period, the region experienced two major climatic stages, namely 110 0 0-10 0 0 0 0 a BP and relative wetting periods of 10 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0BPBP This is consistent with climatic fluctuations recorded in adjacent areas Compared