基于遥感数据的江西赣州耕地时空分布与动态变化分析

Arable Land of Space-temporal Distribution and Dynamic Change Analysis of Ganzhou City,Jiangxi Province Based on Remote Sensing Data

以江西省赣州市1985年、1995年和2005年3期遥感解译的土地利用数据为基础,在地理信息系统的支持下,全面阐述和分析了耕地的时空分布,揭示不同地形、不同坡度和不同高程情况下耕地的时空变化状态;利用土地利用动态度模型和耕地重心迁移模型,剖析耕地的土地利用格局变化,不同土地类型的转化方向与转化数量,以及转化的重心变化,为了解和把握耕地资源时空分布与动态变化规律,制定赣州地区的区域开发战略和国土整治提供科学依据。

This essay is based on the three land use data by remote sensing interpretation separately in 1985,1995 and 2005 in Ganzhou City, Jiangxi Province. It comprehensively analyses the spatial and temporal distribution of the arable land in the support of geographic information system, revealing different terrain, different slopes and different spatial and temporal changes in the state of the arable land elevation case. By using land-use dynamic degree model and farmland center of gravity migra- tion model, this essay dissects the pattern changes of arable land use, the conversion direction and number of different types of land, as well as the changes of gravity centre by transformation. It aims to understand and grasp the resources of arable land for spatial and temporal distribution resources, and the regular rule for dynamic variation of arable land, providing a scientific basis for the strategies of regional development and land improvement in Ganzhou.