儋州湾海岸带土地利用时空演变研究

Spatio-temporal Evolution of Land Use in the Coastal Zone of Danzhou Bay

基于儋州湾海岸带地区2000、2010、2013和2016年4期Landsat遥感影像数据,利用RS和GIS技术进行遥感图像解译和多时相海岸带土地利用制图.应用定量分析方法、土地利用动态度模型和转移矩阵模型,分析和评价了儋州湾海岸带土地利用时空演变特征.结果表明:儋州湾海岸16年内发生了大幅度的变化,变化趋势是由陆向海推进.时间上,研究区域在2010年之前动态变化较小,2010年之后动态变化增大,其中以2010—2013年土地利用动态变化最大;空间上,研究区域动态变化的热点区域位于洋浦半岛和洋浦湾.研究区域以农用地为主,10种土地利用类型中以旅游用地、建设用地和道路的动态变化最为显著;土地转移主要表现为农用地向建设用地、旅游用地、道路、池塘的转移以及近岸水域向建设用地和旅游用地的转移.

Based on the Landsat data of remote sensing image of the coastal zone of Danzhou bay in 2000,2010,2013 and 2016,remote sensing interpretation and land use maps in multi-years were made with RS and GIS technology.The temporal and spatial characteristics of land use in Danzhou Bay coastal zone were analyzed and evaluated by using the quantitative analysis method,the land use dynamic degree model and the transfer matrix model.The results show that Danzhou Bay coastal zone has been changed greatly during the last sixteen years.The trend of change is from land to sea.The studied area underwent small dynamic changes before 2010,but dynamic changes increased after 2010.The maximum dynamic changes took place between 2010 and 2013.Yangpu Peninsula and Yangpu bay are hot spot of regional dynamic changes.In research area,farmland is the main land use type.In 10 land use types,tour land,construction land and roads were the most significant dynamic changes of land use;land transfer are mainly represented by transform from farmland to construction land,tour land,roads,ponds and coastal waters to construction land and tour land.