基于GIS的盐城市区域发展时空特征研究

Research on Regional Development Spatio-temporal Changes in Yancheng Based on GIS

以江苏省盐城市为例,获取了1975年、1990年、2000年、2004年、2006年和2010年6个年份的土地利用分类数据,研究了盐城市区域发展的时空变化。选取LISA指数用于捕捉局部空间聚类特征,探索时段内的发展集群区域;同时利用Getis指数捕捉集群区域内的发展峰值,展示发展冷点地区和热点地区。研究结果表明,发展聚类在空间上呈现散点式分布,分布较为明显,且随时间推移范围逐步扩大;热点分布区仍然呈现以县市中心城区为主的格局,且该时段内逐渐由内陆向沿海发展;冷点区则呈现明显的减少趋势,北部及部分沿海区域正逐步转换为热点区。

In this paper,taking Yancheng City in Jiangsu Province for example,the study time nodes was identified as 1975、1990、2000、 2004、2006、2010,and access to relevant data post-processing.The LISA index was chose to capture the local spatial clustering,to explore the development of regional clusters in periods better.On this basis,Getis Index was used to capture peak value within the cluster region in the development area,to show the development of the region of cold spots and hotspots.The study results show that regional spatial development clustering in space presents a scatter distribution and expand the scope of cluster gradually over time,hotspot distribution in space of Yancheng is still the pattern that is focused on the center citybased and along the ports and other transport facilities.