近30年来连云港地区土地利用／覆被的时空变化

摘要

以江苏沿海城市连云港为研究区域，利用 Landsat 影像，采用基于最大似然法的监督分类，结合目视解译，获取了研究区1984，1989，1995，2000，2005，2010以及2014年土地利用／覆被（LUC）分类信息，运用空间叠加方法获取土地利用转移矩阵以及空间变化分布图，并以此分析连云港 LUC 时空变化，结果表明：连云港主要的土地利用类型是耕地，其次是建设用地，水域所占比重也较高；耕地、水域以及裸土地主要转变方向是建设用地，建设用地和林地的主要转变方向是耕地。此外，还分析了具有沿海特色的土地利用／覆被变化（LUCC）季节潮位等时态变化对于 LUCC 结论的影响，为进一步开展沿海滩涂区土地利用的相关研究提供参考。%Based on the method of maximum likelihood supervised classification combined with visual interpretation, land use/cover(LUC)data of Lianyungang City in 7 individual years including 1984,1989,1995,2000,2005,2010 and 2014 were obtained using Landsat images.And the spatio-temporal land use/cover change(LUCC)in Lianyun-gang was explored on the basis of land use transfer matrix and LUC spatial changing maps from two adjacent stages obtained through spatial overlay method.The results show that:1)among the individual land use type,arable land covers the largest area of Lianyungang,construction land the second largest area,and water the third largest area;2)the majority of changed arable land,water and bare land were transferred into construction land during the 30 years.While the changed forest and construction land were mainly transferred into arable land.In addition,the a-nalysis of the impact from seasonal and tidal change on LUCC results provides references for the related research in coastal regions.