Atlanta tree canopy
Atlanta has a reputation as the "city in a forest" due to its abundance of trees, uncommon among major cities. With 36% of the city covered in trees, Atlanta is more densely forested than other cities in the U.S., which average only 27% coverage.
Atlanta, often called a "city in a forest" and a "tree haven", has a large tree canopy covering much of its area. The city's main street is named after a tree, and beyond the Downtown, Midtown, and Buckhead business districts, the skyline gives way to a dense canopy of woods that spreads into the suburbs. The nickname is factually accurate, as the city's tree coverage percentage is at 36%, among the highest of all major American cities, and above the national average of 27%.
The city's lush tree canopy, which filters out pollutants and cools sidewalks and buildings, has increasingly been under assault from man and nature due to heavy rains, drought, aged forests, new pests, and urban construction. A 2001 study found that Atlanta's heavy tree cover declined from 48% in 1974 to 38% in 1996. This loss of tree canopy resulted in a 33% increase in stormwater runoff and a loss of 11 million pounds of pollutants removed annually, a value of approximately $28 million per year. Due to a historic drought in the late 2000s, Atlanta lost trees at an unprecedented rate. For example, Piedmont Park lost about a dozen large, historic trees in 2009, compared to two or three during normal years. Although many of Atlanta's trees are between 80–100 years old and thus reaching the end of their normal lifespan, the drought accelerated their demise by shrinking the trees' roots. However, the problem is being addressed by community organizations and city government. Trees Atlanta, a non-profit organization founded in 1985, has planted and distributed over 75,000 shade trees. Atlanta's city government awarded $130,000 in grants to neighborhood groups to plant trees.
The low-density residential subdivision development that dominates the Atlanta area has historically not been required to replace lost tree inventory. Because of larger lot sizes and natural-looking architecture, such as California contemporary, older neighborhoods typically have many mature forest trees, except in cases where they have been destroyed by homeowners. Increasing density allowed by zoning since the 1980s has meant fewer and fewer trees left, and by the 2000s it became common for developers to completely clearcut dozens of acres of forest and bulldoze all hills flat to build generic tract housing, often with tightly packed homes nearly touching each other and up against the street. However, over the past decade some area cities and counties have revised their tree ordinances to require tree recompense to be equal to or greater than the pre-development tree density, trying to ensure a future tree canopy. Rather than leaving trees on each home lot as before, this typically involves a set-aside of green space in each development, with most other areas still clear-cut. Even when some trees are replaced, it is with a single type of trees planted the same distance from each other, rather than different trees at random placement and age as in the native forest. At a rate of 50 acres (20 hectares) per day, the deforestation brought by land development has had a significant impact on area watersheds, as they now flood far more rapidly and to a much greater extent than prior to development.
The American Institute of Architecture's 1993 Guide to the Architecture of Atlanta:
"Interestingly enough, the city's greatest natural asset, its lush vegetation and gently rolling topography, which eighty years ago enabled Druid Hills to become one of the most beautiful Olmstedian garden suburbs in North America, distinguishes Atlanta's highway architecture from suburban office complexes in other boom towns like Houston and Tampa."
Tom Wolfe, A Man in Full:
"He looked away from the buildings and out over the ocean of trees. Since Atlanta was not a port city and was, in fact, far inland, the trees stretched on in every direction. They were Atlanta's greatest natural resource, those trees were. People loved to live beneath them."
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- [Tom Wolfe, A Man in Full, 1998, p. 63]