Green areas perform important environmental and
recreational functions as outlined by Costanza et al.
(1997). It is well known that forest and green plants
absorb atmospheric carbon, they maintain a certain
degree of humidity in the atmosphere, regulate rainfall, moderate the temperatures, restrain soil erosion
and they also form the basis for the conservation of
fauna and flora. Recreational activities based on enjoying the contact with nature are becoming increasingly
widespread. Urban parks, although on a smaller scale,
also carry out the same environmental and recreational
functions as forest and green areas.
In the cities, the main environmental function performed by gardens and parks is to absorb carbon dioxide (CO2) emissions. These emissions come mainly