Trees provide shade that helps regulate home temperatures, resulting in reduced heating costs in the winter and cooling costs in the summer. On average, residences with properly placed trees experience 27% lower summer costs and 15% lower winter costs. Properties which contain quality tree canopies are valued 5 to 15% higher than properties which lack trees. Furthermore, properties adjacent to parks are valued 8 to 20% higher than homes located elsewhere. Additionally, research suggests that trees help reduce crime rates.
Trees absorb air and water pollutants, filtering ozone, nitrogen dioxide, sulfur dioxide, and carbon dioxide from the air and nutrients and pesticides from the water. It is estimated that one mature deciduous tree can catch over 5,000 gallons of rainwater per year. The US Forest Service estimates, a city needs to increase its tree canopy by 10-15% to counteract the extra runoff created by an extra 1% of hard surfaces. Trees, therefore, can have a significant, positive impact on the environment and reduce the money needed for stormwater control. During photosynthesis, trees take in carbon dioxide from the air and release oxygen while their leaves trap and hold pollutants like dust and smoke. Annually, a healthy tree stores 13 pounds of carbon. Mature trees remove up to 70 times the amount of pollution from the air as that removed by young trees. Trees also filter chemicals and sediment from runoff, hold soil in place, reduce polluted runoff over soil by holding water in their leaves and bark, and absorb and block noise and unsightly views – all of which helps reduce the flow of polluted water into the Blue River.