摘要
基于ESDA-GIS的空间分析框架,利用甘肃省2007年87个县(市、区)的统计数据,对其城乡统筹发展水平总体和局部空间差异格局进行了研究。首先对统计数据进行了概括性因子分析,随后对县域统筹发展水平的空间结构进行了探索性分析,最后将城乡统筹发展水平的局域空间自相关系数按县级行政单元进行聚类。结果表明:甘肃省域范围内城乡统筹发展水平呈现"西高东低,北高南低"的格局,并具有增长极带动下的区域整体发展特点;地区城乡统筹发展空间差异显著,在空间上体现出两极"俱乐部趋同"的集聚态势;各县级行政单元自身的政府调控水平和建设水平组合特征不均衡,各项指标非平行发展。ESDA-GIS空间分析方法可以清楚地解释城乡统筹发展水平的空间异质性问题,并且具有直观的可视化效果。
Coordinative development of urban and rural areas is an important part of regional economic coordinated development,and also important way in solving urban-rural dual structure,narrowing the gap between strategic decision-making.Based on ESDA-GIS spatial analysis framework and the statistical data of 87 counties(cities,districts) of Gansu Province in 2007,the level of coordinative development of urban and rural differences in the overall and local spatial patterns were studied.17 indicators were selected as the basic variables for the urban and rural coordinative development evaluation,and an index system was built up to calculate the composite index of the urban and rural coordinative development.According to the principle of eigenvalue greater than 1,four main components,government regulation factor,economy and urbanization factor,living standards factor and facilities level factor,were selected,whose cumulative variance contribution rate was up to 80.96%.General statistical characteristics of the four main factors show that the frequency distribution of factor values are skewed,the data deviated from the center,and morphology is also a lack of symmetry.The results indicate that government regulation,economic and urbanization,living standards and building a greater degree of geographical differences exist.After calculating the synthesized scores of every administrative district,the paper makes use of ESDA-GIS framework to analyze spatial difference of coordinative development of urban and rural areas of county area in Gansu.The Exploratory Spatial Data Analysis(ESDA),which based on the computing spatial auto correlation and spatial heterogeneity,is also used to detect the geographical dynamics of Gansu' regional disparity patterns.There are significant positive spatial autocorrelation(Moran's I) of coordinative development of urban and rural areas level in Gansu.Moran's I Scatter plots and LISA(Local Indicators of Spatial Association) cluster maps are used to test the local pattern of the coordinative developme
出处
《干旱区地理》
CSCD
北大核心
2011年第2期355-363,共9页
Arid Land Geography
基金
国家社会科学基金重点项目(08AMZ003)
国家自然科学基金(41061017)
西北师范大学知识与科技创新工程项目(NWNU-KJCXGC-03-60)
关键词
城乡统筹发展
ESDA
空间差异
GIS
甘肃
coordinative development of urban and rural areas
ESDA
spatial disparity
GIS
Gansu Province
