厦门市土地利用年际变化遥感分析

采用多步骤遥感图像分类以及后分类变化检测方法所得到的厦门市1989、1995和2000年的图像分类图及土地利用变化转换矩阵,查明了厦门市1989～2000年的土地利用变化：城乡建设用地、耕地以及林地／园地等主要用地类型的面积及变化；大量耕地被城市扩展侵占,数量不断减少,质量不断下降。分析认为,工业化和城市化的发展、人口的增长以及自然地理条件等因素是厦门市土地利用发生变化的主要驱动力。研究表明,利用3S技术可以快速有效地对城市土地利用年际变化进行动态监测,揭示城市土地利用动态变化的特点及其内在规律,为城市规划和政府决策部门提供参考依据。

Satellite Remote Sensing of Land Use Inter-annual Dynamic Change in Xiamen, China

Three land use classification maps of Xiamen in SE China in 1989,1995,and 2000 with their changeconversion matrixes were obtained using the multi-stage classification and the change detection(post-classifica-tion comparison)techniques.The result clearly reveals the land use changes in Xiamen during the 11-yearstudy period with rapid economic development and urbanization process.The land use has changed significant-ly,especially in the main land use types such as the built-up land,the arable land,and the forested land.Alarge amount of arable lands are replaced by the built-up lands due to urban expansion,resulting in not onlythe decrease of quantity but also reduction in quality of the arable lands.Analysis revealed that the main driv-ing forces causing these changes in Xiamen include the progress in industrialization and urbanization,the popu-lation growth,and the topographic environment.The study finally concludes that dynamic monitoring of land useinter-annual change can rapidly and efficiently identify the characteristics and the inherent rules of land usechange of the city by using multi-temporal and muhi-spectral resolution remote sensing images,with a combi-nation of geographic information system(GIS)and global position system(GPS)technique,and the result canserve as a reference for decision-making and urban planning of the local government.