中文摘要：

罗布泊西岸地区的塔里木河谷地貌带的第一道天然堤形成时间应有数百年，第二道天然堤与一道之间间隔时间较长，但也至少在100—200年以上，三、四道天然堤的形成时间应属近代。小河古湖积平原在2000aBP前后，环境有所好转，1700aBP前后环境又恶化。罗布沙漠西缘风沙地貌带是近代罗布沙漠不断向西推移，使原先的河湖冲积平原地表被沙丘覆盖形成风沙地貌。罗布泊湖积台地以楼兰故城一带分布最广，地面切割深度一般在6m左右。孔雀河三角洲前缘的孔雀河末端河道似具有由南向北迁移的特点，第一期古河道可形成于2000aBP，第二和第三期古河道应形成于2000aBP前后，第四期古河道形成于20世纪20～50年代。河湖地貌过程与罗布泊环境变迁密切相关。近代罗布泊可分东湖和西湖两部分，其间被高3～5m由北向南延伸的半岛相隔。罗布泊东湖早在3000aBP前后就已干涸，罗布泊西湖干涸的时间可能也在20世纪60年代中后期。

英文摘要：

In west region of Lop Nur, the Tarim River valley landform zone, the first natural bank is formed in few centuries ago, the second natural bank is is formed in latter time. The environment formed earlier than in about 2 000 a BP 100 - 200 a BP , the third bank and the forth bank is becoming better, and becoming atrocious 1 700 a BP The formation reason of wind-sandy landforms in west section of Lop Desert is its movement to western to cover the original alluvial plain formed by river and lake. Lop Nur＇s lacustrine tableland largely distributed in Loulan ancient city, with Ground erosion depth of about 6m. End river course of Kongi River in forepart of Kongi r iver＇s delta has the characteristics of transference form south to north, the first ancient river course is formed in 2 000 a BP, the second and the third are formed in about 2 000 a BP, and the forth is formed in 1920s -1950s of 20th Century. The relationship between landforms process of river and lake and environment change is closely related. Lop Nur in latter time could be divided into East lake and West lake, which are separated by a peninsula with the height of 3 - 5 m extending from north to south. The East lake had been dried up in about 3 000 a BP The dried up time of West Lake of Lop Nur maybe is in middle - later stage of 1960s.