中文摘要：

运用GIS技术探讨乌鲁木齐城市用地空间结构演变的时间、空间特点和发展的规律。结果表明：在研究时段内,乌鲁木齐市由一个中心（大十字）逐步发展为多个中心（友好、铁路局、火车站）。城市空间结构出现多核心的分布特点。在各个城市中心点（增长极）,农业用地面积都在不断减少。远离最大发展中心（大十字）的铁路局附近农业用地减少的幅度最大。而居住用地、商业用地面积始终都在不断增加。大十字中心附近工业用地一直在减少;友好中心是前期增加（1970～1984）,后期减少（1984～1993）;铁路局中心一带始终增加。

英文摘要：

The space-time characteristics and evolvement of urban spatial structure were explored in the paper by using GIS technology.The study showed that the single city center （Dashizi） of Urumqi was developed progressively into multi-center （Youhao,Tieluju,Huochezhan） during the study period.The multi-center distributing characteristic of urban spatial structure appeared.The area of agricultural land was reduced constantly in each city center （growth pole）.And the reduced speed of agricultural land in Tieluju which was far away from the largest city center （Dashizi） was fastest.But the area of residential and commercial land were increased all the time.While the industrial land near Dashizi keeped reducing,that of Dieluju was increased all the time.And industrial land in Youhao showed the characteristic of increasing in earlier stage （1970-1984） and reducing in later stage （1984-1993）.