TM-SAR数据融合在黄河口沙咀动态监测中的应用研究

Coast Line Dynamic Inspect and Land Cover Classification at Yellow River Mouth Using TM-SAR Data Fusion Method

黄河口沙咀位于 1976年之前黄河入海故道与现黄河入海口之间 ,是目前世界上陆地面积生长最快的地区。该地区于 1992年经国务院批准为国家级自然保护区 ,是以保护新生湿地生态系统、珍稀频危鸟类为主体的国家级自然资源保护区。由于受河流泥沙淤积作用、海水侵蚀作用、石油开发等自然及人为因素综合作用的影响 ,该区海岸线蚀进及地表覆盖状况变化较快。利用获取的 1995 ,1997,2 0 0 0年陆地卫星TM数据 ,对地观测卫星ERS - 1和RADARSAT数据 ,通过数据融合处理及FL神经网络分类方法 ,可以清楚的对 1995～ 2 0 0 0年间黄河口沙咀海岸线蚀进及地表覆盖状况进行动态分析。研究结果表明 ,TM和SAR的融合数据对该地区动态监测有一定的优势。

The coast of the Yellow River mouth refers to the section starting from Wuhaozhuang in the north to Songchunrong in the south. It is a typical section on the Yellow River mouth delta that has received greatest amount of silt since 1976.Landsat 5 TM data and the synthetic aperture radar data(ERS-1 and Radarsat data), the data fusion method and the neural net classified method are used in studying the coast line dynamic and land cover classification at the studying area. Some features and laws concerning the rapidly progressive and erode changes in siltation along the coast of the mouth and the land cover changes are summarized and some conclusions are also obtained. All of these will have importantly instructive significance for harnessing the river mouth of and protction of the nature wetland resource.