Study of evolution of Huangqihai and Daihai Lakes in holocene in inner mongolia plateau

对内蒙古高原全新世以来黄旗海、岱海湘泊演变过程及其演化规律进行探讨,得出12000-8500a B.P.时湖面回升.但有小的波动;8500-6000a B.P.时为高湖面时期;5000a B.P.前后湖面下降;4000-3500a B.P.时湖面再度上升;3000a B.P.以后湖面急骤收缩,但仍有多次停滞与退缩。造成湖面波动的主要原因与气候变化有关;近期变化还与人类不合理利用有关。;The evolution of Daihai and Huangqihai lakes in the Inner Mongolia plateau since holocene is studied.The Following conclutions are drawn.The lake levels rose up to lead to a little fluctuation in 12000-8000a B, P.; rhe highest lake level period appeared in 8500-6000a B.P., around 5000a B.P.the lake level began to descends in 4000-3500a B.P.the lake level went up again; and after 3000a B.P, the lake level reduced rapidly, but still had some fluctuations.Climate change was responsible for the major cause of making the lake level undulate.The recent change of the two lakes are due to irrational use of the lake.