Evapotranspiration is a combination of evaporation and transpiration. Evaporation is a physical process that transforms liquid water into vapor by absorbing heat. Transpiration is the biological process of plants releasing water vapor through leaves. This water was previously pulled up …
How does vegetation help reduce noise pollution in urban ecosystems?
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 …
How do trees save energy in the winter?
Winter sun helps warm things up so, when deciduous trees loose their leaves, more sunshine and solar radiation are cast on homes and buildings. Money and energy are saved by increasing warming in and around structures. Savings also come from …
I'm planting a tree and shrub windbreak to shelter my home in winter. What should I take into account in locating and designing it?
First, the windbreak should be located upwind from prevailing winter winds. If most of your winter wind comes from the north, then locate the windbreak to the north of your home. Also, wind will tend to curl in around the …
Who is responsible for taking care of the tree in front of my house?
Rights and responsibilities for trees in front of houses vary across states and municipalities. Residential yards abutting public roadways are often overlain by a right-of-way adjacent to the pavement that permits the municipality or state to maintain the road and …