- تعداد بازديد :
- دوشنبه 1385/12/14
- تاريخ :
Tree Planting Day!
The cultivation of trees is the cultivation of the good, the beautiful, and the ennobling in man.
—J. Sterling Morton
Trees beautify our surroundings, increase property values, and help save energy.
Utilities supply our homes with electricity, gas, telephone service and cable television.
Yet along our city streets, tree limbs and utility lines compete in the air, while tree roots, cables, and pipes vie for space below ground.
Resolving this conflict without resorting to practices that harm trees is the ultimate goal.
The Value of Trees to a Community
The following are some statistics on just how important trees are in a community setting:
“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.
“Trees can boost the market value of your home by an average of 6 or 7 percent.” —Dr. Lowell Ponte
“Landscaping, especially with trees, can increase property values as much as 20 percent.” —Management Information Services/ICMA
“One acre of forest absorbs six tons of carbon dioxide and puts out four tons of oxygen. This is enough to meet the annual needs of 18 people.”
“Trees properly placed around buildings can reduce air conditioning needs by 30 percent and can save 20 —50 percent in energy used for heating.” —USDA Forest Service
“Trees can be a stimulus to economic development, attracting new business and tourism. Commercial retail areas are more attractive to shoppers, apartments rent more quickly, tenants stay longer, and space in a wooded setting is more valuable to sell or rent.”
“Shade from trees could save up to $175 per year (per structure) in air conditioning costs.”
—Dr. Lowell Ponte
“Healthy, mature trees add an average of 10 percent to a property's value.” —USDA Forest Service
“The planting of trees means improved water quality, resulting in less runoff and erosion. This allows more recharging of the ground water supply. Wooded areas help prevent the transport of sediment and chemicals into streams.” —USDA Forest Service
“In laboratory research, visual exposure to settings with trees has produced significant recovery from stress within five minutes, as indicated by changes in blood pressure and muscle tension.” —Dr. Roger S. Ulrich Texas A&M University
“Nationally, the 60 million street trees have an average value of $525 per tree.” —Management Information Services
Images of Tree Planting Day in Different Countries