Trees provide shade, protection from the wind, and reduce atmospheric dust and pollution (including 'greenhouse gas' emissions).
Trees provide a habitat for native animals and play an important role in natural ecosystems, including reducing outbreaks of pests, protecting fragile soils and preventing salinity problems.
Trees in screen buildings, reduce heat and glare from built structures, provide privacy, and improve our streetscape. Aesthetic considerations include an appreciation of the beauty of trees, a connection with the past, and a sense of peace and harmony associated with trees.