基于遥感影像的单县土地利用动态变化分析

Analyses of Dynamic Changes in Land Use in Shanxian County Based on Remote Sensing Image

土地动态变化的研究对于土地资源的可持续利用、社会的和谐发展都有重要作用。运用遥感技术能够高效、精确地对土地利用动态变化进行分析。以单县为研究对象,运用ENVI软件,对山东省单县2000年和2009年两期遥感影像进行配准、裁剪、监督分类等操作,将该县土地分为耕地、林地、居民地、湖泊、河流、其他用地六种类型。结果表明,从2000年到2009年,居民用地、林地不断减少,耕地、湖泊的面积在扩大,其中湖泊的年变化速度最快,其他用地在大幅度减少。总之,该县要严格控制人口增长;实行退耕还林政策,提高耕地的质量;合理开发、规划土地,处理好单县的城市发展与耕地、林地之间的矛盾,实现该县土地资源的可持续发展。

The studies on dynamic changes of land play an important role in the sustainable use of land resources and the harmonious development of society. Using remote sensing technology can efficiently and accurately analyze the dynamic changes of land use. Shanxian County and the ENVI software was used to registrate, clip and supervise classification and other operations with two remote sensing images of Shanxian County in 2000 and 2009. The county was divided into six types including cultivated land, forest land, lakes and other land. Results showed that the residential land and forest land continuously reduced. The area of cultivated land and lakes were expanded. Other land type reduced greatly. It is advised for the county to strictly control population growth, adopt a policy of returning farmland to forest, improve the quality of cultivated land, reasonably exploit and plan land to solve the conflict between urban development and cultivated land, forest land and to realize the sustainable development of the land resources.