本文以天津滨海新区为研究对象,以1995年和2007年的Landsat TM影像数据为主要数据源,对湿地变化进行分析。为了区分各湿地类型,通过ERDAS遥感软件和ArcGIS软件相结合,对遥感图像进行了一系列处理,经过预处理、分类、面积统计、栅格矢量转换、拓扑检查、制图等步骤,生成天津市滨海新区各湿地类型分布图。研究结果表明,滨海新区湿地面积近12年来呈整体增加的趋势,人工湿地增加,天然湿地呈破碎化减少的趋势,并进一步分析其变化原因及治理措施。 更多还原
【Abstract】 Taking Binhai new district in Tianjin city as the study area and using Landsat TM data of 1995 and 2007 as the data source,this paper analyse the change of wetland. In order to identify the type of the wetland,the remote sensing images will be processed by combining the software of ERDAS and ArcGIS,the steps including pretreatment,classification,counting area,translating raster data to vector data,topology editor and graphic,and at last formed a graphic of wetland type distribute in Binhai new d... 更多还原