基于RS／GIS技术的厦门市土地覆盖变化研究

综合应用RS／GIS技术，以1994年5月12日的Landsat TM影像和2003年4月25日的Landsat ETM＋影像作为数据源，通过基于光谱值的决策树分类方法，对厦门市的土地覆盖状况进行研究．结果表明：约10年间厦门市土地覆盖状况变化显著，耕地大量减少，林地明显增多，建设用地整体增多且结构有所改变，常规建设用地总量增加很少；综合年变化速率不大；多山临海的地理环境是城市扩张的驱动力，造成土地覆盖情况在空间分布上有明显变化．

RS/GIS Based Study of Land Cover Change of Xiamen City

With the integrated utilization of RS and GIS technologies, we choose the Landsat TM images of May 12, 1994 and the Landsat ETM ＋ images of April 25, 2003 as data sources to study the land cover conditions of Xiamen City by decision tree classification on the basis of the value of spectrum. Results showed that during the past decade, a significant change in land cover conditions of Xiamen City happened to see that a significant reduction in cultivated land a remarkable forest land increase, an overall increase of construction land with the changed structure, and a little increase in total amount of conventional construction land the combined annual rates of change are not sufficient; the geographical environment of mountainous and coastal area is the driving force of urban sprawl, which will eventually change the land cover in the spatial distribution significantly.