基于TM/ETM^＋影像的新沂市土地利用时空变化研究

利用1988,1994,2003年3期陆地资源卫星影像,采用监督分类法和分层信息提取法,提取江苏省新沂市3个时期的土地利用信息,定量分析土地利用类型的时空变化特征。结果表明,15年间,新沂市的土地利用结构发生了较大的变化。建筑用地、林地逐年增加,耕地和未利用地逐年减少。用地主要以耕地向其它各类用地转移和未利用地向耕地转移为主。林地和建筑用地的动态度较高,耕地和水域的动态度较小。

Analysis of Spatial-temporal Changes of Land Use Based on TM/ETM+ Images:a Case Study of Xinyi City

Based on three temporal satellite remote sensing TM/ETM^＋ images, the land use information of Xinyi City, Jiangsu Province in 1988, 1994 and 2003 was extracted by the supervised classification and hierarchical information extraction methods. According to the basic data, the dynamic changes and transforming trend of land use were quantified. The results showed that the local land use structure was greatly changed in the past 15 years. The areas of built-up land and forestland continually increased and the areas of other land use types decreased. The main conversions were farmland converted into other uses and unused land into farmland from 1988 to 2003. The dynamic degree of forestland ＆ built-up land was high and others were low.