城市化进程对重庆北碚城郊气温变化的影响

Impact Analysis of Urbanization on Air Temperature of ChongqingOutskirts

为了深入了解城市化进程对北碚城郊气温的影响,利用重庆北碚地面气象观测资料(1980—2013年),采用线性回归、数理统计等方法分析城市化影响贡献率的时空变化分布特征,以及城市化与北碚城郊温差的相关关系。结果显示:随着重庆北碚的经济社会发展和城市化进程,近34年北碚城区增温速率0.33℃/10a,郊区增温速率0.12℃/10a,年平均气温空间分布与平均气温的变化倾向率空间分布基本一致,呈自西向东逐渐减弱的特点;城市化对平均气温贡献最大的区域主要集中在城区,对秋季的影响最大;城市化与北碚城郊温差有显著的相关关系。除了常住农村人口与城郊温差为负相关外,人均GDP、房屋建筑竣工面积、常住人口、常住城市人口与城郊温差之间均为正相关关系。

In order to better understand the influence of urbanization on air temperature in the outskirts of urban areas. By means of the data from the Beibei meteorological observation station of Chongqing from 1980 to 2013, using the linear regression and mathematical statistics methods, an analysis is made of the temporal and spatial variation distributions of the contribution rate of urbanization influences, and the relationship between urbanization and urban-suburban temperature difference at Beibei. The results show that with the economic and social development and urbanization of Chongqing, the warming rates of 0.33 and 0. 12 ~C per 10 years are observed at Beibei and the suburban respectively; the spatial distribution of annual average temperature is basically the same as the spatial distribution of average temperature variation tendency, weakening from west to east gradually; on average, the areas with great contribution to average temperature are mainly concentrated in the urban areas, the largest in autumn; there is significant correlation between urbanization and urban-suburban temperature difference at Beibei; the rural resident population and suburban temperature difference are negatively correlated, and the urban-suburban temperature is positively correlated with GDP per capita, housing construction, resident population, and urban resident population.