基于遥感技术的珠海市湿地动态变化分析与研究

Dynamic Change Analysis and Research on Zhuhai City's Wetland Based on the Remote Sensing Technology

采用1995年TM,2002年TM、ETM+、SPOT和2009年CBERS等多源卫星遥感数据,通过对单一的遥感数据、多源遥感数据组合,得出利用多源遥感数据提取湿地信息的方法。在不同环境下,利用不同的数据源对珠海市湿地动态变化、湿地的光谱信息和纹理信息进行分析,采用监督分类、非监督分类和人机交互解译结合及专家分类相结合的方法,对图像进行解译,最终提取3个不同时期的湿地信息。基于分类结果,得出湿地面积动态变化图,利用空间叠加分析方法,分别在时间和空间尺度上,对珠海地区的湿地资源动态变化和驱动力进行分析。

Through a single,multi-source remote sensing data in combination,the wetland information of Zhuhai city was studied using the three different data sources,the TM data of 1995,the TM,ETM＋,SPOT data of 2002 and the CBERS data of 2009.In different environments,the dynamic change,the spectral and texture information on wetland were analyzed using different data sources.Using the methods such as the supervised classification,unsupervised classification,the combination of interactive interpretation,and the combination of expert classification,the paper interpreted the image and extracted three different periods wetland information.The wetland area dynamic change map was obtained using the classification results,and the method of spatial overlay analysis was used to analyze the dynamic changes and driving force respectively in time and space scales of the Zhuhai area of wetland resources.