基于改进熵值法的城市“精明增长”综合测度——以长江三角洲16市为例

“精明增长”是资源环境约束下中国城市可持续增长的必然选择，该理论的中国化与适应性研究至关重要。将理论内涵与中国城市增长实际需求相结合，构建包含城市规模、城市福利、城市空间和城市消耗四增长维度的城市“精明增长”综合测评模型，并运用改进熵值算法，对1999~2008年长江三角洲地区从时序变动与截面比较进行实证研究。结果表明：长三角16市在考察期内增长逐年更为精明；上海、南京、杭州城市增长更为精明，其余城市熵值评分考察期内波动较大，且空间分布有两极分化的趋势；四增长维度影响综合评价的权重由高至低分别为福利维度、规模维度、消耗维度与空间维度，城市福利和规模增长是影响城市增长精明程度的主要方面，两维度中反映城市环境、产业结构、就业结构、城市化水平的指标贡献较大；城市消耗和空间维度权重较低，其中反映土地与生活能源消耗的指标作用明显，需要加大城市消耗的控制和内涵空间增长的拓展

COMPREHENSIVE EVALUATION OF URBAN SMART GROWTH BASED ON IMPROVED ENTROPY METHOD——A CASE OF 16 CITIES OF THE YANGTZE RIVER DELTA

Smart Growth is an inevitable choice for China city sustainable growth with constraints of resources and environment,it’s very important to integration of this theory with the practice of China cities’ growth.This article firstly designed an evaluation index system according to the principles of Smart Growth.The system includes four growth dimensions which are the growth of city scale,city spatial,city consumption and city welfare.Based on the improved entropy method,we evaluated the Smart Growth degree of 16 cities in the Yangtze River Delta by using urban statistical data from 1999 to 2008.Findings indicate that the entropy of all 16 cities shows an increasing trend,and the growth becomes more and more smart.The growth of Shanghai,Nanjing and Hangzhou is smarter than other 13 cities.The tendency of polarization of spatial disparities is gradually showed up.The dimensions of city welfare and city scale are the key features of city growth.Measures should be taken to control city consumption and expand potential city space.The indexes reflecting city environment,economic structure,employment structure,urbanization and the consumption of land and life energy make significant contribution to the evaluation.