吉林市常见园林树种降温效果的比较

Comparison of Air-cooling Effect of Urban Tree Species in Jilin City

利用树冠垂直投影范围内与裸露的对照点气温的同步观测比较法,对吉林市常用的27个园林树种进行夏季降温效果比较研究。结果表明:各树种间降温效果差异较大,降温率最低仅为0.19%,最高为7.18%;通过选择具有可比性的时间段观测数据,对所研究树种依据降温效果显示,东北杏、五角枫、栾树、油松等降温效果最佳,而沙地柏、青海云杉、辽东水蜡树、珍珠绣线菊等降温效果最差。

An experiment was conducted to study the air-cooling effects of 27 common urban tree species in Jilin City in summer by contrasting the temperature within the vertical projection of tree crowns with the temperature of the control spot which is not covered by any plants. Result indicated that the differences in the air-cooling effects of all the tree species were significant, and the temperature reducing rate ranged from 0.19% to 7.18%. The observational data from the comparable period show that the air-cooling effects of Prunns mandshurica, Acer mono, Koelreuteria paniculata, Pinus tabulaeformis are better, while Sabiua vulgaris, Picea crassifolia, Ligustrum suave, Spiraea thunbergii have relatively poor air-cooling effects.