If it is necessary to continue to affect the environmental quality, anywhere, you would reinforce the quality of the environment it is in other compensation in terms of quality, so that the macro environment remains the same.
If it is necessary to continue to provide the quality of the environment in one place. It must strengthen the quality of the environment on the other. To compensate for variations in terms of environmental quality has remained the same.
If it is necessary to carry out impact on environmental quality in somewhere. To strengthen the environmental quality in the other. Compensate for in terms of macro environmental quality remain as before.