Association Camurri WWF and Agro Aversano - Naples North Coast and Domitius , following several meetings to study on the utility of urban green spaces, have developed a policy governing the mode of protection and increase of public green aimed at the containment of air pollution and noise (addressed today to the competent bodies of the City of Gricignano di Aversa).
This paper results from the desire to protect the quality of existing plants and to suggest guidelines on the installation of new plant species, avoiding recourse to actions which are, as aesthetically valuable, of little use in maintaining the ecological balance of ' urban ecosystem. In this case one can refer to the example of blatant planting carried out in Corso Umberto I ° of the plant species Washingtonia filifera (Palma California) myths native to areas of America North, which as we have seen, fails to develop its natural conditions of life within our Mediterranean ecosystem. This is demonstrated by the complete absence of flowering and the remarkable proliferation of attacks by parasites. Condition, the latter resulting from the absence of natural predators of insects that attack these species.
Thus Camurri WWF and suggest, in the case of new plantings, use of native species that are basically as able to resist pests naturally. In particular, with regard to ecological aspects, it is advisable to Quercus Ilex (Holm), an evergreen comprising: the absence of woody fruits (cones or pine cones), hair can absorb and reduce noise, and to ensure optimum control of water balance and microclimate (moisture absorption, shadows, etc.). absorption of heavy metals and polycyclic aromatic hydrocarbons (PAHs) in air. 
choice, that of the ilex, which does not require special effort because of its massive presence on our territory, the daughter of folk wisdom of our ancestors who, for good reason, they thought of using this species to adorn the streets and squares of our countries. Striking example of this philosophy the can be found in the town hall square with trees that have always been the set of natural events that mark the history of our country.
However, with great regret, in recent years has had to watch helplessly in our country, the decimation of these trees and therefore is the primary commitment of the association Camurri and WWF, to ensure that the municipality itself with a practical tool for environmental protection and in particular of urban green.
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