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研究古湖泊是开发水资源的有效途径。山西省中部的太原盆地在早更新世时是一片汪洋大泽，进入历史时期湖水南泄，在介休以北，平遥、祁县、太谷以西，文水、汾阳以东形成一个残留的湖泊，即昭余祁，《尔雅·释地》将该湖列为全国十薮之一。此后昭余祁有两次大的淤缩，第一次是汉代，第二次是唐宋时期，元代以后成了面积较小的昭余池和芦苇之地。利用遥感卫片根据比值合成影象进行解译，发现在昭余祁的范围内有３个完整的、大小不同的闭合结构图斑，分别为３个时期的变化范围。再通过地层岩性资料和实地考察来分析，其结果与史籍和遥感解译相同。最后说明了昭余祁湮塞的原因。
Studying ancient lakes is an effective way to develop water resources. In the early Pleistocene, the Taiyuan Basin in central Shanxi Province was a vast expanse of ocean and entered the south of the lake in historical periods. It formed a residue east of Jiexiu, Pingyao, Qixian, Taigu, west of Wenshui and Fenyang The lake, namely Zhao Yu Qi, “Er Ya release” the lake as one of the nation’s top ten. After that, there were two large shrinkages in Zhao Yu Qi, the first was in the Han Dynasty, the second was in the Tang and Song dynasties, and later the Yuan Dynasty became a small area of the Showy Pond and Reed. Using remote sensing images to interpret the images based on the ratio, we found that there are three intact and different closed structure patches in the range of Zhao Yuqi, which are the variation ranges of three periods respectively. And then through the formation lithology data and field visits to analyze the results with historical records and remote sensing interpretation. Finally, the reasons for the Obscure Qiu Yu Qi annihilation.