基于OLI数据的天津市土地利用空间格局分析

Analysis of Spatial Pattern of Land Use in Tianjin Based on OLI Data

以天津市2016年的Landsat OLI遥感影像为数据源,结合景观指数定量分析了天津市的空间格局特征.结果表明:耕地是天津市最主要的土地利用类型,占土地总面积的52.01%,其次是建设用地和水域,占土地总面积的31.57%和10.65%.耕地的分布呈"北多南少",主要分布于远郊区;建设用地的分布以中心城区和滨海新区中心区为核心,集中于海河沿岸;水域的分布呈"东多西少";林地主要分布在天津市的北部蓟州区.随着距以和平区为中心的市区越远,土地利用的复杂度越高,各类地物斑块的分布也越均匀,被主要景观类型所主导的程度也越低,各类地物斑块的规则化程度越低.

With Landsat Operational Land Imager(short for OLI) remote sensing images of Tianjin in 2016 as the data source,this paper quantitatively analyzed the spatial pattern of land use based on the landscape index.The results showed that cultivated land was the main land use type in Tianjin City,accounting for 52.01% of the total land area,followed by construction land and water area,accounting for 31.57% and 10.65% of the total land area respectively.The distribution of cultivated land is presented in the pattern of“more in north and less in south”,and mainly in the outer suburban areas.The core areas of construction land are distributed in the central city and Binhai New Area center and along both banks of the Haihe River,centralizing along the River.The distribution of water areas in Tianjin City is presented in the pattern of“more in east and less in west”.Forest area is mainly distributed in Jizhou District in the northern part of Tianjin.The farther away from the urban area,which is centered on Heping District,the higher the complexity of land use,the more uniform the distribution of various types of plots,the lower the degree of dominance of the main landscape types,and the lower the degree of regularity of various types of plots.