基于TM数据的土地利用动态变化研究——以重庆市潼南县为例

Study on Dynamic Chang of Land Use Based on TM Data with Tongnan County,Chongqing City as Example

以1993、2001和2010年的Landsat TM影像为数据源,利用几何校正、监督分类等技术手段进行图像处理,获取潼南县各年的土地利用现状图,对1993～2010年的土地利用动态变化情况进行统计和分析。研究结果表明,潼南县的建设用地增加显著,而耕地和旱地基本保持不变,证明潼南县作为农业重点县,应注重保护耕地,努力保持耕地占补平衡,保障潼南县农业的可持续发展。研究结果可为潼南县可持续发展提供决策依据。

The dynamic change of land use in Tongnan County was computed and analyzed by using the geometric correction,supervised classification and change detection statistical methods based on 3 Landsat TM images taken in 1993,2001 and 2010.The results showed that the increase of construction land is significant,while arable land and dry land unchanged.As an agricultural key county,Tongnan County should focus on the protection of arable land,keep balance of arable land,protect agriculture sustainable development.The study can provide reference for decision-making of Tongnan County sustainable development.