基于景观格局指数的空间格局分析是当前景观生态学研究的重要基础内容,土地利用类型对景观格局指数具有显著的影响。利用1988年的TM遥感影像和2008年的中巴资源卫星数据(CBERS-02),运用RS和GIS技术,对近20年来北碚区土地利用/覆被变化及景观格局影响进行了分析,发现北碚区土地利用变化的总趋势是耕地和其他用地面积呈减少趋势;住宅用地和工矿用地、林地、水域及水利设施用地及水利设施用地呈增长趋势。从景观形状指数看,居住、工矿用地和其他用地形状趋于复杂;林地、耕地和水体,由于人类的干预趋干简单;从景观分维数和破碎度来看,居住、工矿用地等建筑用地分维数增加,其他类型分维数减小。该区域应该严格控制新建建设用地,加强生态规划,切实保护耕地。
Based on the landscape pattern index, the spatial pattern analysis is currently an important basis for the content of the Land- scape Ecology. Land-use type significantly affects the landscpe pattern index. Using the TM image in 1988 and the CBERS(CBERS-02) image , combined with the RS and GIS technology, we studied the land use/cover change and its impact on the lancscape pattern analysis for the past 20 years in Beibei District and found the trend of land-use/cover changes are the area of cultivated land and other land uses tending to decrease; The residential land, industrial as well as mining as, forest , waters and water conservancy facilities land tending to increase; Reading the landscape shape index, we can see housing, industrial and mining sites and other sites tending to complex shapes; Woodland, arable land and water, due to human intervention tending to simple. From the landscape fractal dimension and the fragmentation of view, we can see the number of fractal dimension of the housing, industrial and mining land use and other building land increased, and other types of fractal dimension decreased. The region, for construction should be strictly controlled to enhance ecological planning and earnestly protect arable land.