摘 要 ：研究土地利用变化的时空分异规律和机制对认识人类活动在全球变化中的作用机制具有重要意义。选择北京市海淀区、延庆县作为研究区,利用1992、2002年的遥感影像数据,采用转移矩阵法和多元线性回归法，分析了1992~2002年海淀区、延庆县土地利用变化的时空分异特征及其驱动机制。研究表明：①1992到2002年间，海淀区、延庆县土地利用变化的差异主要表现在：海淀区建设用地扩展速度明显高于延庆县，且内部改造强烈；延庆县农业用地面积减少程度明显低于海淀区，且有明显的内部结构调整；海淀区原有建设用地开始转变为林地。 ②1992到2002年间，海淀区土地利用变化主要外在驱动力包括人口增长、第二产业（高新技术）、第三产业（房地产）的发展及北京市总体规划政策；最主要内在因素为前期土地利用方式；延庆县土地利用变化的主要外在驱动力包括非农业人口的增长、第三产业（旅游业）的发展、农业结构调整及生态建设；最主要内在因素为地形因素。 ③ 海淀区土地利用变化是政策主导，延庆县土地利用变化是经济发展主导。
Abstract:The research of spatial-temporal differentiation and mechanism of land-use/cover change (LUCC) is fundamental in landscape change science. In this research, the Haidian and Yanqing Districts of Beijing were taken as the study area, and the TM/ETM image of 1992 and 2002 were used as data source. The data were analyzed by transfer matrix and multiple linear regression to reveal the spatial-temporal changes and the mechanism of LUCC. Results indicated that: ① From1992 to 2002, urban built-up area in Haidian expanded much faster than that in Yanqing and the structure of urban land in Haidian changed intensively; Agricultural land in Yanqing decreased much less than that in Haidian and the structure of agricultural land in Yanqing changed obviously. Urban land in Haidian started to change into woodland, which was not detected in Yanqing. ② From 1992 to 2002, the main external driving forces of LUCC in Haidian were population growth, new technology blooming, real estate development and new urban planning policy of Beijing; The most important internal factor of Haidian was the former land-use. The main external driving forces of LUCC in Yanqing were the growth of nonagricultural population, the development of tourism, the adjustment of agricultural structure and the ecological development of Beijing. The most important internal factors of Yanqing is terrain. ③ LUCC was mainly policy driven in Haidian and economy development driven in Yanqing.