基于组合赋权法的四川省城市化水平时空演变研究

Spatial and Temporal Evolution of Urbanization Level in Sichuan Province Based on Combination Weighting Method

城市化是当今社会发生的最为显著的变化,受到广泛的关注;因此对城市化进行综合、客观的评价就显得尤为重要.传统的评价方法在赋权时并不完全合理;采用AHP-熵值法结合的组合赋权法,以四川省21个地(市)州为研究单元,结合重心转移模型和Arc GIS软件对2003—2013年四川省城市化水平进行研究.研究表明:2003年以来,四川省城市化水平取得了一定程度的提升,但各城市间的水平差异较大,并呈现逐步拉大的趋势;全省城市化水平重心转移距离和空间波动均较小,向东北方向偏移;四川省城市化水平在空间上有较强的正相关性,但集聚趋势在减弱,有随机分布的态势;川东北传统农业区和三州地区的城市化水平普遍偏低,亟待转变发展方式.

Urbanization is the most significant changes in today,has been paid widespread attention,and it is particularly important to have a comprehensive and objective evaluation about urbanization. This paper uses AHP method and entropy value method combined to determine the weights,taking the 21 cities of Sichuan province as the study areas,and studies the urbanization levels and spatial and temporal evolution in Sichuan province from 2003 to 2013 by center of gravity model and Arc GIS software. The results show that each districts of Sichuan province＇s urbanization level has achieved a certain degree of ascension since 2003,However,there is a great difference in the level of each city,and presents a trend of gradually widening. The gravity center moving distance and spatial fluctuations of the urbanization level in Sichuan province are relatively small,shift to the northeast. There is a strong positive correlation between the level of urbanization in Sichuan province,but the trend of agglomeration isweaking,has a tendency to random distribution. The urbanization level of traditional agriculture areas in northeast of Sichuan province and three regions are generally low,it is essential to change the way of development.