基于5期遥感数据，通过ERDAS9．3平台对影像进行监督分类，把地物分为5类来提取其相关的信息，如面积、轮廓周长等，并进行统计．利用建筑面积指数、城市空间形态指数、人口密度指数和土地利用多样性指数4个测量指标来定量测量厦门城市紧凑度并分析其发展趋势与原因，得到城市发展的基本现状，为城市决策者更好地发展城市、规划城市提供辅助数据分析，有助于资源的合理利用、公共设施利用率的提高，可对生态环境起到根源性的保护作用．%We calculated the relevant information, like area and outline circumference which are extracted by su⁃pervised classification of image through ERDAS9.3 based on remote sensing data. By quantitative measurement of Xiamen's city compactness and analysis of its development trend and reason through the four measuring indexes, such as floor⁃space index (F.S.I.), urban spatial form index, population density index and land use diversity in⁃dex, the basic status of city development is acquired to provide auxiliary data analysis for the city's decision mak⁃er, which is propitious to rational use of resources, high operation rate of public accommodation and original pro⁃tection of ecological environment.
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