湖北省咸宁市土地利用/覆盖变化研究

基于1978、1991和2002年3期的MSS、TM与ETM遥感影像数据,对红壤丘陵北部边缘区的咸宁市1978～2002年20余年来土地利用变化及其驱动因素进行了研究.为充分揭示不同土地利用类型在土地结构整体变化中的地位和作用,利用ARCGIS数据集成分析平台,将不同时段土地利用图叠加,统计了不同土地利用类型在2个比较时段的转移概率矩阵.结果显示,20多年来咸宁市土地利用结构一直是以林地为主导的土地格局,林地、园地、建设用地、水域面积显著增加,耕地、未利用地则明显减少.在定量刻画土地利用变化的基础上,运用逐步回归方法对该市土地利用变化的人为影响因素进行分析,最终筛选出影响该区土地格局变化的主要驱动因素为:政策导向、科技投入、消费水平与人口因素.

Changes of Land Use/Coverage in Xianning City,Hubei Province

The land use changes in Xianning City,Hubei Provine using the MSS image in 1978,the TM image in 1991 and the ETM image in 2002 were demonstrated.The result indicated that from 1978 to 2002 the forestland was major element in the area studied.The forestland,garden land,urban or built-up and water area were obviously increased while cultivated land and unused land were largely decreased.The stepwise regression analysis were used to study the major driving factors of land coverage/use.It was represented from s...