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为了探寻城市景观发展变化规律,利用TM遥感影像数据,采用基于决策树分类的影像处理技术和归一化植被指数方法对长沙市雨花区景观格局变化规律进行研究。研究结果显示:长沙市雨花区2003年到2013年,城区耕地、园林、林地、水域、未利用土地面积均呈减少趋势,减幅最大的是耕地,增量最大的是居民点及工矿用地。十年来大量农业用地转换为建设用地,值得引起城市管理、规划、保护部门的关注。
In order to explore the law of urban landscape development and change, using TM remote sensing image data, using the image processing technology based on decision tree classification and the normalized vegetation index method to study the landscape pattern change of Yuhua District, Changsha City. The results showed that the area of cultivated land, garden, woodland, water area and unutilized land in urban area showed a decreasing trend from 2003 to 2013 in Yuhua District, Changsha City. The largest reduction was in cultivated land, with the largest increase in residential area and industrial and mining land . The conversion of a large number of agricultural land into construction land over the past decade deserves the attention of the urban management, planning and protection departments.