Vegetation reduces noise pollution through a phenomenon called sound attenuation, which is the reduction of sound intensity. Normal attenuation of sound occurs as the energy of sound dissipates over long distances until not enough energy is left to vibrate …
I want to select the best spot for my tree. How can I find out where the sun will be in the summer and winter?
The position of the sun is expressed in altitude (or elevation) and azimuth, both of which will vary by location, time of day, and time of year. Altitude refers to the height of the sun over the horizon (higher in …
What should I look for when selecting a quality tree?
High-quality nursery stock begins with a reputable nursery. Check references or call your local county Extension office for recommendations.
In deciduous trees, look for dark-green, untattered leaves that are well-distributed throughout the crown. For evergreen trees, look for dark-green, firmly …
Where can I find information about trees I can plant for energy conservation?
Most states have information to help you decide what trees are right for your location and planting conditions. In Maryland, for example, and many other states you can view nursery catalogs and order trees online from state professionals. The …
How can I keep my tree small?
The best way to keep your tree small is to plant a species that does not grow large. Ask your local extension office, state forestry, natural resources or conservation agency for a list of small-growing trees for your area. It …
What is the difference between a Certified Arborist and a Consulting Arborist?
The difference between a Certified Arborist and a Consulting Arborist resides with the organization that issues the title.
Certified Arborists are accredited through the International Society of Arboriculture (ISA). Each individual who passes the specific test for certification will …
Planting Urban Trees: Maintenance Requirements
Too often trees are forgotten and not maintained after being planted. A tree requires proper care, especially in the early stages of its development, to prevent health problems. Consider the following checklist when planting a tree:
- Are there adequate resources
Urban Soils: Contamination and Urban Trees
Soil can be contaminated by masonry, wood, paper, asphalt, paint, fuel, cement, oil, salt, or other materials. Contamination may occur across an entire site, such as an industrial property, or in spots, such as concrete washouts and refueling areas. This …
Tree Planting in Cities (Part 2): Site Preparation
Proper preparation of the planting site is critical to good root development. In urban areas, site preparation may require special planning because of the type of planting site, such as street or parking lot plantings. Also, when preparing the site, …
Urban Soils: Temperature Extremes and Moderating Soil Temperature
Credit: Raina Sheridan
Temperature extremes can alter the chemical and biological characteristics of soils. Urban locations often have higher soil temperatures than rural areas because of the heat that is absorbed by and reflected from buildings, sidewalks, streets, and vehicles. …