基于RS与GIS的咸宁市土地利用变化及其驱动力研究

土地利用及覆被变化的研究已经发展成为二十世纪最重要的研究内容之一。文章通过咸宁市2005年、2015年Landsat遥感影像图提取2个时期的土地利用/覆被信息,利用动态模型来揭示2005-2015年间的土地利用及覆被变化特征,并对其驱动力进行分析。研究结果表明:咸宁市2005年到2015年林地由539平方公里增加到760平方公里,草地由24平方公里减少到15平方公里,水域由63平方公里增加到85平方公里,建设用地由262平方公里增加到295平方公里,耕地由616平方公里减少到347平方公里。这在一定程度上反映了人地之间的矛盾关系,咸宁市土地利用/覆被变化的主要驱动力为人口的增长,经济的发展以及城市化政策的推动。

The study of land use and cover change has become one of the most important research contents in the 20th century.In this paper,the land use/cover information of two periods-in 2005 and 2015-was extracted through the Landsat remote sensing image of Xianning City,and the dynamic model was used to reveal the characteristics of land use and cover change from 2005 to 2015,and the driving forces were analyzed.The results show that:from 2005 to 2015,the forest in Xianning City increased from 539 square kilometers to 760 square kilometers,grassland has decreased from 24 square kilometers to 15 square kilometers,water area has increased from 63 square kilometers to 85 square kilometers,construction land has increased from 262 square kilometers to 295 square kilometers,and arable land has decreased from 616 square kilometers to 347 square kilometers.To some extent,this reflects the contradictory relationship between people and land.The main driving forces of land use/cover change in Xianning City are the growth of population,the development of economy and the promotion of urbanization policies.