摘要
论文采用RS方法解析遥感影像,并结合镇（乡）级行政区划图,界定无锡市1979-2008年6个时段的城乡结合部范围,结果表明城乡结合部范围与同时期城市建成区大小及经济发展水平呈正相关。参照我国土地利用分类体系对提取的历年城乡结合部用地类型进行重新划分,运用GIS属性表的统计功能及景观生态学方法对重新划分的用地类型进行结构分析,结果表明城乡结合部建设用地比重随城乡结合部范围变化不断提高,耕地比重大幅度下降;除建设用地在1998年以后用地形态趋整,其他各类用地形态均趋于破碎化,反映出各种规划的力量更多体现在对建设用地的控制;耕地相邻边界长度变化表明城乡结合部范围内农业活动的主体地位被非农产业活动替代。
This paper uses methods of GIS and RS,in particular,to interpret the remote sensing image,combined with the town level administrative division map.Thus it provides a standard method of defining the rural-urban fringe.According to this method we can define the rural-urban fringe of Wuxi in 6 periods from 1979 to 2008.Analyses show that the scope of rural-urban fringe has a positive correlation with the size of built-up urban area and the level of economic development.Referring to China＇s land-use classification system,the paper divides the land types in rural-urban fringe over the years.Using statistical features of GIS attributes table and the method of landscape ecology the paper researches the structure of the land-use,and the results show that the proportion of construction land rapidly increases as the scope of rural-urban fringe changes;at the same time,the proportion of plowland continues to decline.All the types of land-use tend to be fragmentated while construction land tends to integrate after 1998.This reflects that various planning endeavors take effect in control of construction land.The boundary length and the proportion of adjacent land also show that the rural-urban fringe land-use structure has changed.To sum it up,this analysis shows that the construction land has dominated the rural-urban fringe area instead of plowland.
出处
《地理研究》
CSCD
北大核心
2009年第5期1255-1263,共9页
Geographical Research
基金
国家自然科学基金资助项目(40771062):大城市城乡耦合地域状态及系统测度研究
关键词
城乡结合部
用地类型
结构演变
无锡市
rural-urban fringe
land use types
structure evolution
Wuxi
