关键词: 城市化, 热岛效应, 降水, 辐射

Abstract: With the process of urbanization, the uninterrupted extension of city scale, the continued increase of population, mankind activities and special ground constructions acting on atmosphere together etc., the characteristics of atmospheric layer have been changed, and effected temperature, precipitation and radiation of urban region. From the statistics of precipitation of Nanjiang Precipitation Station in the different periods, it is found that the annual precipitations and frequencies of rainstorm of Najjing City have been increasing, and the increase tendency is very distinct since 1970. Due to the cause of rainstrom, the frequencies of rainstorm flood are increasing and the pressure of flood control to Nanjing City aggravates.