城市环境地质研究破译千古之谜——楼兰古城神秘消亡新解

在人类历史上 ,由于缺乏必要知识 ,将城市建在不适当位置并被地质灾害毁灭的事时有发生 ,楼兰古城就是因地质灾害而消亡的楼兰古城建在古孔雀河下游河道上 ,孔雀河水是该城的唯一水源。公元 4～ 7世纪间 ,古城上游河段曾先后两次发生河岸滑坡堵塞河水 ,形成堰塞湖 ,导致孔雀河改道 ,从而彻底断绝了维系楼兰古城生命的唯一水源 ,古城不得不被废弃而且无法复兴我国是地质灾害频繁的国家之一 ,加之现代化进程中的负面影响 ,必须重视和加强城市环境地质研究

The study on urban environment geology to discuss the “thousand years' problem”——New solution of Loulan old city disappearance

In history, some cities were destroyed by geological disaster,because they were built in unwell position, such as Loulan old city. 　　The Loulan city was set up on the lower reaches of old Kongqiu river, which was the unique water resource in the city. In the 4～7 century, the water resources from Kongqiu river was cut off because of old Kongqiu river changed channel resulted from landslip on upper reaches.The old city had to discard. 　　Because the geological disaster often happened and humanity active effection in our country,the study of urban environment geology ought to attach great importance.