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Expert recommends town councils to design low-allergy impact green spaces
Date:11/6/2008

elm trees, plane trees, daisies or grass are commonly used by the administration when it comes to design urban green spaces. "All of them have been described as allergen plants, and they provoke serious damage to the people who suffer such problem", says the UGR Professor.

Allergy causes

Some of the causes which contribute to the presence of allergies in the cities due to the existence of ornamental plants are the favourable meteorological conditions to the emission and presence of pollen in the atmosphere. "In general says Carianos- temperatures between 20-25C in spring and 50-60% humidity facilitate the emission of pollen. This, together with a moderate wind speed, makes diffusion even stronger". In addition, "town councils use too many examples for the ornamentation of parks and gardens, and they do not observe the minimum separation necessary for the examples to grow", says the expert.

The introduction of exotic species, which give rise to new types of allergy, and the interaction of the plants with other atmospheric pollutants, present in cities (such as ozone and carbon dioxide, as the particles derived from combustion in diesel engines may remain adherent to the surface of pollen grains increasing their allergen activity) are other of the factors which contribute to the allergic nature of the ornamental species.


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Contact: Paloma Carinanos Gonzalez
palomacg@ugr.es
34-958-241-977
Universidad de Granada
Source:Eurekalert

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