中文摘要：

土地利用/覆被变化是全球环境变化研究的核心问题之一,选择适当的变化检测方法在江苏海岸带土地利用/覆被变化研究工作中具有重要意义。本研究选取江苏海岸带具有典型代表性的大丰市作为变化检测方法比较研究的试验区,采用1992年和2002年两期Landsat TM影像,分别运用主成分分析法、混合变化检测法和变化矢量分析法进行变化检测,提取土地利用/覆被变化信息,并对每种变化检测方法进行定量分析和综合比较。研究表明,主成分分析法对于试验区的土地利用/覆被变化研究具有检测速度快、检测精度高等优点,适合试验区以及整个江苏海岸带的土地利用/覆被变化的检测。最终,综合运用主成分分析法和分类后比较法获得了5期近30年江苏海岸带土地覆被分类图,证明了主成分分析法可有效应用于江苏海岸带的变化检测。

英文摘要：

The choice of an appropriate change detection method is much more significant to the research of land use/land cover change.This study has taken Dafeng City,a representative area of Jiangsu coastal zone,as the study area to be the comparative study of change detection methods.In this study,two periods of Landsat TM images（1992,2002） are used to conduct the change detection.The three methods including the principal component analysis（PCA）,hybrid change detection and change vector analysis（CVA） were used.Results of each method are showed by the land use/cover change information,advanced quantitative analysis and comprehensive comparison.It is demonstrated that PCA is the most suitable change detection method for the study area and even the entire Jiangsu coastal zone because of its higher speed and higher precision.Finally,in this study five periods of land cover classification maps of Jiangsu coastal zone during the last 30 years are successfully compiled based on PCA and post-classification comparison.