摘要
基于确定兰州市城乡结合部范围,分析其地域差异性,为未来城市空间合理扩展提供理论依据,文中运用定性和信息熵法确定兰州市城乡结合部范围,采用丰富度、均匀度、优势度分析地域差异性,并利用多样化指数、集中化指数和组合系数法分别计算其多样化程度、集中程度和组合类型。结果表明:1)兰州市区区域差异性最大,丰富度、均匀度和优势度分别在50-68级、0.7-0.845级和0.172-0.5级之间,多样性大多数在0.5以上;永登县和皋兰县均匀度和优势度最低,分别介于0.127-0.3和1-1.339级之间。2)城关区、安宁区、七里河区集中化程度较高,集中度都在0.3以上;榆中县和西固区耕地和居民点工矿用地组合数高,最高为6。结论:兰州市城乡结合部土地资源区域配置差异较大,区域发展不平衡,应因地制宜,使其均衡发展。
Based on the determination of the transitional region between urban and rural areas of Lanzhou,we analyzed the regional difference and provided theoretical basis for reasonable extension about future urban space.The research used qualitative method and information entropy method to define the rural-urban transitional area and used richness,evenness and dominance to measure the heterogeneity degree of land use elements;used Diversity index,centralization index and the combination coefficients to calculate its diversity degree,concentration and combination type.The results showed： 1） Rregional difference of Lanzhou city is the largest area,richness,evenness and dominance are respectively of 50-68 grade,0.7-0.845 magnitude and 0.172-0.5 magnitude;diversity indes is mostly above 0.5.The degree of homogeneous and dominance are minimum in YongDeng and GaoLan,respectively 0.127-0.3 and 1-1.339 level.2） The concentration have high degree in ChengGuan,AnNing,qilihe.Cultivated land,residential areas and mining land have high combination degree in Yuzhong and Xiqu area.Conclusion is land regional resources allocation has more differences in Lanzhou;,the regional development does not balanced.
出处
《干旱区资源与环境》
CSSCI
CSCD
北大核心
2013年第11期20-25,共6页
Journal of Arid Land Resources and Environment
基金
地区科学基金项目(71263003)资助
关键词
地域差异
信息熵
分析
城乡结合部
兰州市
regional differences
information entropy
analysis
urban-rural fringe
Lanzhou
