In the Volusia area of Veio Regional Park (Parco regionale di Veio) reforestation and preservation programmes have been carried out over an area of 38,000 square metres, compensating for the emission of 28,120 kg of CO2.
Vegetation and forest recovery interventions are one of Rome city council's activities to cut CO2 emissions according to the parameters established by the Kyoto Protocol. Tree planting has a positive impact on the environment locally because it reduces air and noise pollution, regulates the microclimate, enables energy saving and increases biodiversity and the number of green areas accessible to citizens.
The plot of land has been divided into two sections, A and B, each with different orographic features.
Section A is characterised by flowering plants with limited coverage and large quantities of common golden thistle and cotton thistle. There are a few shrubs such as Spanish broom, dog-rose, hawthorn and blackthorn. There are groups of trees or individual trees such as cork oaks, that are almost always found on the southern slope, as well as downy oaks, evergreen oaks, field elms and black locusts.
Section B is characterised by thicker vegetation. There are some rows of olive trees and on the eastern border there are two rows of stone pines. Gum and mimosa trees and cedars are found on the sides of houses.
The species to be planted in section A have been chosen among those already present, whilst in sector B species that need a deeper and more diversified soil with higher water capacity and better sun exposure have been introduced.