基于GIS的毕节市七星关区城市土地利用变化遥感监测研究

Research on Remote Sensing Monitoring of City Land Use Change of Qixingguan District Based on GIS

以2000年和2014年TM遥感影像为基础数据源,通过人工解译和运用GPS野外验证,得出毕节市七星关区建成区两期的土地利用类型图。通过遥感调查分析,毕节市七星关区土地利用类型面积增加最多的是城镇用地,减少最多的是旱地,城镇用地主要由旱地、中覆盖草地、疏林地、水田等转化而来,人为因素是毕节市七星关区土地利用变化的主要驱动力。毕节市七星关区的森林覆盖率减少,整体生态环境有变差的趋势,所以应加大城市生态环境的保护力度。

We used TM remote sensing images of 2000 and 2014 as the basic data source and with the artificial interpretation and GPS field verification to obtain the land use type maps in the two periods of Qixingguan district. According to RS investigation,the area of land use types in Qixingguan district which increased most was construction land while that decreased most was dry land. The construction land was mainly transformed from dry land,medium covered grassland,open forest land and paddy field. Human factor was the main driving force of land use change in Qixingguan district. The forest coverage rate was diminished and the whole ecological environment had a trend of getting bad. Therefore, the protection of ecological environment of city should be enhanced.