作　　者： ; ; ; ;

机构地区： 中国土地勘测规划院

出　　处： 《地理科学进展》 2004年第2期1-9,共9页

摘　　要： 作为两种截然不同的生态系统过渡区,城乡结合部是土地利用/土地覆被变化最激烈地区之一,城乡结合部的土地利用情况日益受到人们重视。本文以无锡市为例,利用3S技术提取城乡结合部的范围和土地利用/土地覆被状况信息,提出了确定无锡市城乡结合部范围边界的半自动提取模型和结合部土地利用类型半自动提取模型,并对无锡市城乡结合部土地利用结构及其变化进行分析,揭示了无锡市城乡结合部土地利用/土地覆被变化特征,据此提出城乡结合部土地合理利用的建议。 As the transition region of two kinds of completely different ecosystems, the urban fringe is one of the areas where land use/cover changes most fiercely. The situation of land use in urban fringe area has been paid more attention to by people day by day. Taking Wuxi City as an example, this paper utilized 3S technology to extract information of land use/cover condition in urban fringe. Considering both region structure model of fringe area as the theoretical foundation and building density as the standard, this study regarded the edge of the built-up area of the city as the border distinguishing area with the city and fringe. Meanwhile, the administrative border of the village and towns which are connected to the built-up area of the city is considered as the exterior border of urban fringe. The border is amended by quantificational index. For extracting the border information of city fringe area, four time phases' TM data (1984, 1991, 1998 and 2001) of Wuxi was utilized and the semi-automatic extraction models are adopted. The information of land use/cover change condition is drawn through computer-aided interpretation. Then, land use structure and its change of urban fringe in Wuxi were analysed on the basis of the extracted information. As a whole, its characteristic is that cultivated area is reduced fast; the proportion of land for construction increases year by year; the construction of industrial park becomes a common practice; the efficiency of land use is low; fragmentary land use distributed on this area sporadically; the fragmentation of land use/cover type is obvious; the land for construction of the city has expanded orderly; and a homogeneous expansion mode of city-construction-land has formed. In the end, this paper brought forward land use proposisions for urban fringe areas in Wuxi:(1)To strengthen the basic road network construction of fringe area and to promote the coordinated development in urban and rural areas. The intensive river system of fringe area in Wuxi has formed the crooked road n

关 键 词： 城乡结合部 土地利用 土地覆被变化 技术 无锡市

领　　域： [经济管理] [自然科学总论]