城市化背景下城市内部水热组合条件特征分析——以大连市为例

An analysis of hydrothermal conditions on the background of urbanization——taking Dalian as a case

在城市化快速发展的背景下,城市内部水热条件发生着相应的改变。以大连市为例,根据1999～2007年春、夏、秋、冬四季的气温、降水及风速资料,构建了反映城市内部水热条件组合指数(H),结合同期大连城市化水平(A)的变化趋势,分析城市化背景下城市内部水热组合条件特征及其相关性;通过耦合系数计算探讨引起水热条件变化的主要引起因子。结果表明:随着大连市城市化水平的提升,城市化内部水热条件综合指数呈下降趋势;而道路面积、人口密度和民用汽车拥有量与城市内部水热条件的耦合度较高。

On the background of rapid urbanization,the hydrothermal conditions in city underwent a corresponding change.Take Dalian city for example,based on the temperature,rainfall,wind velocity records of each season during 1999 to 2007,we established an index of H which can reflect hydrothermal combination condition in the city.Combining the trend of urbanization level at the same time,we analyzed the characters of hydrothermal conditions and their correlations during the urbanization process in city,and calculated the coupling coefficient to figure out the main reasons which can arouse the change of hydrothermal condition.The results showed：with the promotion of urbanization level,the comprehensive index of hydrothermal conditions in city reveals a decreasing trend;meanwhile the road area,population density and the total possession quantity of civil automobile have a high coupling coefficient with hydrothermal conditions in city.