大连市常见绿化树种蒸腾降温的效应分析

The analysis of reducing temperature and increasing bumidity of familiar afforestation tree species in Dalian city

选择大连市10种常见绿化树木,测试其叶片的蒸腾作用速率,据此计算出绿地的降温和增湿效能。结果表明:8月份是10种树种的日蒸腾释水量和日蒸腾吸热量差异最明显的月份,榆树、白桦、榆叶梅是较好的降温增湿树种。且乔木之间、灌木之间的单位叶面积光合蒸腾速率有很大的差别。

Choosing 10 familiar afforestation tree species in Dalian city, it has tested the transpiration rate of the leavies, and figured out the potency of reducing temperature and increasing humidity of the green place. The result shows：August is the most obvious different month of transpiring water volume and absorbing heat quantity. The elm, birch and prunus are the better trees of reducing temperature and increasing humidity. Between the arbor trees and the shrub trees, the photosynthesis transpiration rate of leaf area is very different.