【摘要】 选用1989年、1995年和2004年3期数字遥感影像,运用BP人工神经网络(BPNN)分类器,获取研究区各期土地利用信息;利用地理学的“区位”理论和分析方法,分析由于地面塌陷导致塌陷区及其附近地区土地利用的时空演变模式,以及塌陷地的变化与区位因素之间的关系。研究结果表明,土地利用类型的演变具有明显的环状结构:变化速度和幅度中心区明显大于外围区;中心区主要是各种地类向塌陷地的单向转移;中间区主要是园地、耕地、林地、塌陷地和建设用地之间的相互转换;外围区主要是向建设用地和园地的转换。更多还原

【Abstract】 The remote sensing images of 1989, 1995 and 2004 were interpreted to get the land use information of the study area with BPNN. Based on the location theory and the geographic analytical method, this paper studied the time and spatial evolution model of the land use caused by the subsiding land and the relationship between the transformation of the subsiding land and the location effects. The results show that the evolution of the land use types assumed an obvious ring structure, and that the variation speed and extent in the central area were greater than those in the outer area. In the central area, different kinds of land were transformed mainly to the subsiding land. The transformation in the intermediate area took place mainly among the cultivated land, garden land, wood-land, subsiding land and construction land. The periphery area mainly assumed transformation between the construction land and the garden land.更多还原