**2.2.7 Vegetal surfaces**

Vegetal surfaces, such as grass and shrubs, are continuously becoming scarce in the centre of Athens, and their temperatures were measured in few open spaces. As it can be seen in Table 1, in general, vegetal surfaces remain relatively cool during the day. Only the dry grass surface had maximum and mean temperatures equal to 45 and 34.5 oC, while the evergreen shrubs had low maximum and mean temperatures of 34 oC and 29.5 oC, respectively. The differences in the surface temperatures of dry and irrigated grass are significant: 10.5 oC for the maximum temperatures and 6.1 oC for the mean temperatures. This fact indicates the dependency of the surface temperatures of vegetal surfaces on their irrigation.
