摘要
基于信息熵的基本原理,利用多样性指数、均衡度、优势度及空间扩展强度对武汉市近10年的城市用地结构的动态演变进行了实例分析,总结出:①武汉市的城市用地信息熵相对较高,且呈下降趋势,信息熵的动态演变反映了武汉市用地结构的变化情况.②在用地结构的演变中,武汉市的工业用地和仓储用地所占比例居高不变、居住用地逐年增加是造成优势度增加的主要原因.③武汉市道路工厂用地及工业用地的年均空间扩展强度较高,而绿地及其它用地呈下降以至于负增长趋势.④良好的城市用地结构,其土地的分异应处于有序和混沌之间,既有功能分区,又不绝对分异,每一分区用地结构虽趋于混合,但又能看出其主导职能.
Based on rationale of Shannon Entropy,using diversity index,equilibrium degree and superiority degree and spatial expanding intensity,the dynamic evolvement of near ten years urban landuse configuration in Wuhan City had been researched.The results show that ①*!Shannon Entropy of urban landuse in Wuhan City is higher than that in common city,and it drops slowly in ten years. The dynamic evolvements of Shannon Entropy reflect variety of Wuhan City landuse configuration.②*!While evolving landuse configuration, Shannon Entropy of landuse of industry and storage in Wuhan City is always high,and landuse of habitation increases year after year,those are main cause of superiority degree adding.③*!The spatial expanding intensity of road and factory and industry are higher,that of greenbelt and others is decreasing so that it becomes negative increasing.④*!As to favorable configuration of landuse,it diversification should be between order and chaos,and it has not only function subarea,but also no absolute diversification,although each subarea landuse configuration trend blending,it dominant function could be seen.
出处
《西北师范大学学报（自然科学版）》
CAS
2002年第4期77-80,共4页
Journal of Northwest Normal University(Natural Science)
基金
教育部青年骨干教师基金资助项目(2000G07).
