遥感与GIS的青海湖岸线分维研究  

Remote Sensing and GIS Supported Study on the Fractal Dimension of the Shoreline of Qinghai Lake

作　　者：张灿龙[1] 邓自旺[1] 倪绍祥[1] 胡颖文[2] 陈健[1] 刘振波[1] 

机构地区：[1]南京师范大学地理科学学院,南京210097 [2]南京大学城市与资源学系,南京210093

出　　处：《地球信息科学》2006年第4期141-145,共5页Geo-information Science

基　　金：国家自然科学基金(49971056);江苏省研究生创新计划项目(1612005012;xm04-16)资助。

摘　　要：讨论了TM图像以及分形几何学对青海湖岸线问题的求解算法,同时估算了不同像元尺度下,青海湖的岸线长度得出青海湖岸线的分形维数为1.0237,并探讨了其地学意义,研究表明,分形维数不仅是一种可行的表达岸线特征的方法,而且岸线分维数的计算可大大减少工作量和提高工作效率,可见遥感与GIS技术在岸线分维数的计算中,具有十分良好的应用前景。Based on the Landsat TM image covering Qinghai Lake district received on June 29 of 1997 and using the fractal dimension arithmetic method for coastline, the length of the shoreline of the Qinghai Lake is measured and computed at different scales. It shows that the fractal dimension of the shoreline of Qinghai Lake is 1.0237. The results of this study indicate that, firstly, fractal dimension is a feasible approach for expressing characteristics of the shoreline. Secondly, remote sensing and GIS supported measurement of shoreline fractal dimension has obvious advantages such as saving considerably amount of work and raising work efficiency, which indicates that remote sensing and GIS techniques have very good application prospect in the measurement of fractal dimension of shoreline.

关 键 词：遥感 GIS 分形维数 岸线 青海湖 

分 类 号：P208[天文地球—地图制图学与地理信息工程]