罗布泊曾经是我国西北干旱地区最大的湖泊,湖面达12000平方米,20世纪初仍达500平方米,当年楼兰人在罗布泊边筑造了10多万平方米的楼兰古城。但至1972年,罗布泊最终干涸。是什么原因导致了曾经水丰鱼肥的罗布泊变成茫茫沙漠?又是什么原因导致了当年丝绸之路的要冲——楼兰古城变成了人迹罕至的沙漠戈壁? 据考古初步推断,随着青藏高原在距今7万～8万年前的快速隆升,罗布泊由 Lop Nur was once the largest lake in the arid region of northwestern China. The lake surface reached 12,000 square meters, and it still reached 500 square meters in the early 20th century. At that time, Loulan people built an ancient Loulan city with more than 100,000 square meters on the edge of Lop Nur. But by 1972, Lop Nur eventually dried up. What caused the once-famous Lop Nur to become a desert, and what caused it to be a key part of the Silk Road? The ancient city of Loulan became an inaccessible desert Gobi. According to archaeological inferences, with the Qinghai-Tibet Plateau In the rapid uplift of 70,000 to 80,000 years ago, Lop Nur was