Urban Sprawl Pattern and Spatial Features of rümqi City during the Last 15 Years

HUANG Yue~(1,2),CHEN Xi~(1),BAO An-ming~(1),MA Yong-gang~(3) (1.Xinjiang Institute of Ecology and Geography,Chinese Academy of Science,rümqi Xinjiang 830011,China;2.Graduate University,Chinaese Academy of Science,Beijing 100039,China;3.College of Resources and Environment Science,Xinjiang University;rümqi Xinjiang 830046,China)  

In this paper the urban land-use change and spatial features of the urban sprawl are studied on the base of rümqi images of 1987 and 2002.Under the support of RS and GIS software,the land use change information was obtained from 1987 to 2002;for better description of the change of land-use pattern,several landscape metrics were calculated by using the method of landscape ecology;then grade of building density was introduced as quantity index of the spatial features of urban sprawl.During the last 15 years from 1987 to 2002,land-use status of rümqi appeared a dramatic variation;the most important phenomenon was the remarkable increase of built-up area and the landscape pattern became more fragmentized and complicated.The urban sprawl of rümqi has directional differentia;the main sprawl directions are west,northwest and northeast.

【Fund】： 国家自然科学基金项目(40571030)资助
【CateGory Index】： F293.2

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