Trees clean the air. Tree foliage works as a natural air filter of particulate matter such as dust, micro sized metals and pollutants such as ozone, nitrogen oxides, ammonia and sulfur dioxides. Trees take in carbon dioxide and produce oxygen. Combined with the cooling effect of trees, these processes can have a significant impact on reducing smog and overall air pollution.
Trees improve water quality. A healthy urban forest can have a strong influence on our region’s water quality. Tree canopies and root systems slow and reduce storm water runoff, flooding and erosion. Trees also help filter water runoff reducing potential sources of water pollution into our rivers and storm drains.
Trees save energy. Trees cool the air naturally in two ways: through water evaporating from the leaves and direct shade. Homes shaded by trees need less energy for cooling which means lower monthly utility bills in summer and a reduced need for utilities to increase power generation to meet peak load demand.
What is the value of a tree?
A tree can return up to $2.70 for each $1 on community investment…that’s a 270% return (based on a 40 year average life span according to Center for Urban Forest Research, Pacific Southwest Research Station, U.S. Forest Service, Davis, CA)
* Four trees planted around a home can save up to 30% on summer cooling costs.
* One million trees save $10 million a year in energy costs.
* Forty trees remove 80 pounds of air pollutants annually.
* Four million trees can save $20 million in air pollution clean up.
* Four hundred trees capture 140,000 gallons of rainwater annually.
* Four million trees save $14 million dollars in annual storm water runoff costs.
* Trees in commercial parking lots induce shoppers to spend 11% more for goods and services.
* Shade from trees could save up to $175 per year (per structure) in air conditioning costs. -Dr. Lowell Ponte
* Trees can boost the market value of your home by an average of 6 or 7 percent. -Dr. Lowell Ponte
* Healthy, mature trees add an average of 10 percent to a property’s value. -USDA Forest Service
* Landscaping, especially with trees, can increase property values as much as 20 percent. -Management Information Services/ICMA
* The net cooling effect of a young, healthy tree is equivalent to ten room-size air conditioners operating 20 hours a day. -U.S. Department of Agriculture
* Nationally, the 60 million street trees have an average value of $525 per tree. -Management Information Services
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