Is it possible to create a favorable living environment for humans in large cities?

In the ecosystems of cities, the ratio of producers, consumers and reducers is violated. The city constantly receives the energy and resources necessary for its functioning. The city produces a huge amount of toxic gases, toxic waste polluting the environment. In this regard, the ecological balance in the urban ecosystem can not be achieved, therefore, the regulation of all processes associated with the flows of matter and energy in the city, man takes on. However, due to the proper organization of urban landscapes, it is possible to reduce the force of anthropogenic impact on nature, improve the ecosystem of the city.