现代化城市温度分布特征及绿化对策

Temperature Distribution Characteristics of Modern City and Planting Countermeasure

应用Lanasat-5卫星图象资料,对成都市区夏季晴天温度分布作客观分析,拟定5个温度层次,确定相应代表性观测点,每点1.50和0.10 m两个高度,同步进行气温、相对湿度观测;同时与近郊5个气象站平行观测资料进行比较.结果表明:城市热岛、干岛出现在城东、绿化水平低的工厂密集区,最高气温达35.7℃,比郊区平均高出3.0℃;而绿化较好的城西小集镇、事业单位,特别是公园,最高温度为32.7℃,与郊区接近;相应的相对湿度比郊区低14%左右.

This paper takes lanansat-5 Satellite image data to analyse the temperature distribution in fine days in Chengdu urban destricts in summer by means of the observation of the temperature and relative humidity at 5 representative abservation points with 1. 50 and 0.10 m altitude above the ground and to compare with the observation data at 5 meteorological stations in the suburbs of Chengdu. The result indicates that the urban hot and dry islands come out in the eastern Chengdu and the factory region with less planting and their highest temperature is 35.7 ℃ and 3 ℃more than the Suburbs＇ on the average. And the highest temterature at the Western towns and insititutions with good planting in the city, especially in the gardens, is 32.7℃ approximating to the suburbs＇ but the relative humidity is 14% less than the suburbs＇.