基于RS和GIS的日照市东港区土地利用动态研究

Dynamic Monitoring of Land Use in Donggang District of Rizhao City Based on RS and GIS

以日照市东港区为研究区,基于RS和GIS技术对研究区1995年和2014年两期遥感影像进行处理与分析,建立土地利用状态变化转移矩阵,以分析研究区土地利用类型的变化情况.1995-2014年间,耕地、建设用地和其它地类分别增加7.5%、7.2%和7.5%,草地、林地和裸地分别减少13.6%、1.4%和7.3%.借助Markov模型对2020年和2025年土地利用比例进行预测分析,结果显示耕地面积近几年有一定数量减少,至2020年比例相对稳定,建设用地面积缓慢增加,林地、裸地、草地面积走势趋于平缓.根据监督分类图分析得出1995年气候干旱,水位与2014年相比差距较大.对土地利用类型变化趋势的预测可为政府决策提供依据.

Taking Donggang of Rizhao city as the research object,based on the basic information of the Landsat TM image of research area in 1995 and in 2014,Remote Sensing （RS） and Geographic Information System （GIS） technologies was used to got the transfer matrix of land use.The analysis of transfer matrix of land use showed that land use in 2014 was obviously different with that in 1995.Markov model was set up for predicting changes of land use in 2020 and in 2025.The conclusion was that the area of plantation decreased,but that of Cities and towns increased,the area of forest, grass and bare land changed little.The supervised classification chart showed that the climate in 1995 was drought,the waters was not predicting to avoid error.Moreover,the Markov model could be used to hold the feature of land use change and providing scientific basis for government policy.