The great world-wide centers are currently suffering asconseqncias from its bad urban planning, its deficient ordenamentoterritorial and its erroneous model of development. The urban environment has its capacity of suporteextrapolada to each day, consuming more than necessary and generating maisresduos (solid, liquid and gaseous) of what the environment can assimilate. The model of sustainable development foreseen pelConferncia of Estocolmo for the Development and Environment (1972) not tevesua caught essence. The chosen way is maleficent there for the environment, including the proper man.
the generated consequences welfare reflect its aspectosno human. One of the consequences generated for the process of occupation and desenvolvimentonestas metropolises is the phenomenon Urban Island of Heat. Amounts of air quentese make gifts in bigger concentration in the center of the cities that suffer ate disequilibrium. this condition it makes it difficult the evaporation, reduces the power dedisperso of the atmospheric pollutants generated bringing complications for the vidado man in these metropolises. Restaurateur may also support this cause. 2. Islands of Heat in the Areas Metropolitans the process of industrialization based on revoluotcnico-scientific and the urbanization promote the growth sped up dascidades, which suffer deep alterations in its surface and suasformas horizontal and vertical, what it results in sources you add of calorprovenientes of the antropognicas activities. The decalor island results of the rise of the average temperatures in the zones central offices of the manchaurbana or region metropolitan.
They occur basically due to the differences deirradiao of heat between the built regions, the regions with ground displayed edas regions with vegetation and also to the concentration of pollutants, greater in the zonascentrais of the city. surface when provoking modifies the rocking of radiaoda changes in the absorption processes, transmission ereflexo, in the characteristics of the local atmosphere. The substitution of the natural materials for great quantidadede houses and building, streets and avenues, bridges and viaducts and a series of outrasconstrues, that is bigger the more if it approaches to the center of the great cities, modifies the rocking of the radiation of the surface when provoking changes in processosde absorption, transmission and reflection, and in the characteristics of the local atmosphere efaz significantly to increase the irradiation of heat for the atmosphere emcomparao with the peripheral zones or agricultural, where, in general, it is bigger vegetal acobertura.