标题:
基于空间分析的城市土地利用变化特征研究The Study on Urban Land Use Evolution Based on Spatial Analysis Method
作者:
庄澜, 孟雯, 杨光
关键字:
土地利用, 空间特征, 空间分析, 空间距离, 空间格局Land Use, Spatial Characteristics, Spatial Analysis, Spatial Distance, Spatial Pattern
期刊名称:
《Geomatics Science and Technology》, Vol.4 No.3, 2016-06-20
摘要:
土地利用空间格局是地球表层系统最重要的景观标志，能直接反映出城市化过程中土地利用的演化特征，为城市规划、城市建设和区域可持续发展提供有效的决策支持。本文从土地利用的空间特征入手，以2010年和2014年两期区域土地利用数据为实例数据，通过计算图斑的平均最近邻指数，并采用核密度估计进行空间可视化表达与对比分析，研究城市土地利用时空格局的变化特征。结果显示，2010~2014年实验数据土地利用各地类的空间距离在缩小，整体呈现空间聚集趋势；而空间聚集的原因主要有图斑增量明显、原空间密集区向外扩展以及图斑空间位置改变等。
Spatial pattern of land use is the most important landscape mark of the earth surface, which can reflect the evolution characteristics of land use in urbanization process, and provide effective de-cision support for city planning, urban construction and regional sustainable development. From the perspective of spatial characteristics of land use, taking urban land use data in the year of 2010 and 2014 for examples, by means of calculating the average nearest neighbor index, and using kernel density estimation for spatial visualization and comparative analysis, urban land use evolution patterns are studied. As a result, spatial distance between the patches of experimental land use data is narrowed around 2010-2014, which presents the trend of space gathering. The main reasons of the spatial aggregation are the obviously increase of certain land use type, the outward expansion of original space’s intensive area, the change of space position and so on.