基于分形理论的西安市高陵区土地利用空间格局变化研究

为了增进对土地利用空间格局变化的理解,在地理信息技术的支持下,以分形理论为指导,利用"二调"数据库,定量计算西安市高陵区2008和2015年各土地利用类型的分形维数和稳定性指数。结果表明,2008—2015年,全区的水田、水浇地、园地、沟渠、交通用地、城镇用地、农村居民点分形维数减低,稳定性指数提高;林地、设施农用地、工矿及特殊用地分形维数提高,稳定性指数降低;河流水面、水工建筑、未利用地基本保持不变。针对这一结果,分析了各土地利用类型随时间和空间的变化原因,为区域土地规划及其土地资源合理利用提供一定的参考。

Spatial Pattern Change of Land Use in Gaoling District of Xi'an Based on Fractal Theory

In order to deepen the understanding of the spatial pattern of land use,with the support of geographic information technology and the fractal theory,the paper used the "the second national land use investigation data" database to calculate quantitatively the fractal dimension and stability index of land use types of Gaoling District of Xi'an in 2008 and 2015 respectively.The results showed that the fractal dimension of paddy field,irrigated land,garden,ditch,traffic land,urban land and rural residential reduced and stability index increased.The fractal dimension of forest land,facilities,agricultural land,industrial,mining and special land improved and stability index decreased.The fractal dimension and the stability index of river water,hydraulic construction,unused land remained the same.According to the present situation of the results,the reasons of land use types changed with time and space were analyzed,which provided some reference for regional land planning and rational utilization of land resources.