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Street trees and sidewalk gardens do much more than beautify our urban environment. The many different benefits they provide justify our regarding them as part of the city's "green infrastructure" - to be nurtured and protected.

Benefits of urban greening
Two medium-sized, healthy trees can supply the oxygen required for a single person for a year.

Producing oxygen, cleaning the air, reducing global warming

Reducing flooding and water pollution

Joburg City Parks and Zoo's ongoing maintenance programme
Joburg City Parks and Zoo's ongoing maintenance programme covers over 7 500 hectares, of which almost 2 000 hectares are road islands and public space on either side of the city's main and arterial roads.

Increasing revenue in shopping districts

Promoting exercise

Other benefits

REFERENCES

1. E. G. McPherson, J. R. Simpson, P. J. Peper, A. M.N. Crowell, and Q. Xiao, 2010, Tree guide:  Benefits, cost and strategic planting, Northern California Coast Community

2. http://www.fuf.net/benefits-of-urban-greening/