基于遥感技术的绿化树种降温效应的比较

Remote sensing technology was applied to extract the urban green space and land surface temperature retrieval from Landsat TM images. Based on the results, the cooling effect of nine greening tree species (i.e. Eucalyptus, Schima, Castanopsis fissa, Litchi, Longan, Masson pine, Chinese fir, Slash pine and Acacia) were contrasted. The results shows that different tree species have differences in cooling effect for surrounding environment. Among the nine tree species, Chinese fir has the best cooling effect and the Litchi has the worst cooling effect, which mean the tree has a bigger leaf area and coverage, the cooling effect will be better. So, in order to reduce the urban heat island effect and give a comfortable living environment, when the urban green system was planned and constructed, shade species just like Chinese fir should be paint in the moist and short sunshine area, and the heliophilous plant which have a big leaf area should be paint in the long sunshine area.