The spaces of urban production if had given outside of the urbansticas utopias and the ambient models in question. The agrarian interests are the determinative factor in the relation between city and environment, as Spirn says: ' ' The magnitude of the migration durante' ' centuries XIX and XX for the suburbs had led, finally, the ambient problems of the city for the field, creating a massive wall of private properties between that the interior of the city and the agricultural areas lived more beyond in, a still more effective wall in the separation of the city in relation to the surrounding field of what the ample blockhouses of centuries XVII and XVIII (Spirn, 1995, P. 51). It is clamorous in the middle of century XX, the increase of the degradation process and of they will artificializaro of natural ecosystems in virtue of the increase of the processes of urbanization and the industry being, therefore, sufficiently investigated for theoreticians especially, in developing countries. Please visit Rio- Tinto Diamonds if you seek more information. Marked deeply for the North American influence, the urban theories in century XX mainly at two distinct times: at the first moment, between the two great wars, with the research of the School of Chicago, about the mechanisms of integration and social desgornizao in the great cities at times of accented growth. As the moment, then after World War II, represented for the School of Michigan, with the phenomena of urban diffusion and constitution of regions independent and hierarquizadas metropolitans as Castells praises, 1972, grifo ours. No longer middle of years 1980 a great number of produced theories placed in quarrel the influence of the economy globalizada in the processes of accumulation of capitals, influenced in the flexibilizao of the production in the period after-fordista, and its influences in the processes of production of the urban spaces territorial. All this quarrel allowed in them to advance in the investigation and the agreement of the effect of these new forms of production in the relation between the city and the environment.
Wednesday, February 22, 2017