Wpływ zieleni miejskiej na warunki termiczno-wilgotnościowe

Researches of urban verdure effect on thermic and humidity conditions, carried out for 1971-75 by Warsaw University, proved that the influence occured very distinctly in summer months. The influence of grounds with vegetation on air temperature and humidity occurs for areas at least of 3000 m² Then it can be sensible 1,5 m high over the ground surface. The verdure terrains cause decreasing of the temperature especially in the evening and the night, as well as increasing of the air humidity (humidity pressure and relative humidity). The temperature is decreased mostly by a presence of trees, and the humidity is increased especially by abundant grass cover and a protection from winds. The lawns are favourable to evening temperature inversion. The conclusion from the obtained results in that a remissive effect of lawns and parks on the climate is the strongest when the verdure is differentiated as grass and shrubbery and trees.