中文摘要：

基于GIS的梯度分析与景观格局定量分析相结合的方法，研究了平凉市城市化的空间格局。采用以TM为基础的1：100000土地利用遥感制图，以城市中心为原点分别在东西和南北方向上布设1条30km长、3km宽的生态样带，通过移动窗口取样并利用Fragstas软件分别在景观水平和类型水平上选取一系列景观指数进行计算分析。结果表明，在城市化的影响下，平凉市与市郊的过渡地带。景观在组分上表现出多样化，斑块形状比较复杂，破碎化程度较高。不同的土地利用类型随梯度变化的空间格局并不唯一，人类活动对平凉市景观的影响依赖于土地利用格局和土地的利用类型。

英文摘要：

. With the combination of gradient analysis based on GIS and quantitative analysis of landscape elements, this paper studied the urbanized spatial pattern of Pingliang City in Jinghe River basin. Several landscape indices in landscape- and class level were calculated in Fragstats along a 30 km long and 3 km wide transect with a moving window based on a 1 ： 100 000 land use remote sense image. The results showed that under the effects of urbanization, the landscape along the rural-urban transition of Pingliang City was compositionally diverse, geometrically complex, and ecologically fragmented. The spatial patterns of different land use types were not uniform along the gradient, and the landscape process affected by human activities depended on the land use pattern and its type.