Tree Removal / Care
While the perceived risk of death by falling trees (a part of the “tree risk” complex) is influenced by media and often hyped (the objective risk has been reported to be close to 1 : 10.000.000, almost as low as death by lightning),[5] singular events have encouraged a “proactive” stance so that even lightly damaged trees are likely to be removed in urban and public traffic surroundings.[3] As a tree ages and nears the end of its safe useful life expectancy (SULE),[6] it’s perceived amenity value is decreased greatly. A risk assessment normally carried out by local council’s arborist to determine the best course of action.[7][8] As with all public green spaces, trees in green urban spaces and their careful conservation is sometimes in conflict with aggressive urban development even though it is often understood how urban trees contribute to liveability of suburbs and cities both objectively (reduction of urban heat island effect, etc.) and subjectively.[9][10][11][12] Tree planting programs implemented by a growing number of cities, local councils and organizations is mitigating the losses and in most cases increasing the number of trees in suburbia.[13] Programs include the planting of 2 trees for every 1 tree removed, while some councils are paying land owners to keep trees instead of removing them for farming or construction.[14]
Tree care is the application of arboricultural methods like pruning, trimming, and felling/thinning[1] in built environments. Road verge, greenways, backyard and park woody vegetation are at the center of attention for the tree care industry. Landscape architecture and urban forestry[2][3] also set high demands on professional tree care. High safety standards against the dangers of tree care have helped the industry evolve. Especially felling in space-limited environments poses significant risks: the vicinity of power or telephone lines, insufficient protective gear (against falling dead wood, chainsaw wounds, etc.) and narrow felling zones with endangered nearby buildings, parking cars, etc.. The required equipment and experience usually transcends private means and is often considered too costly as a permanent part of the public infrastructure. In singular cases, traditional tools like handsaws may suffice, but large-scale tree care usually calls for heavy machinery like cranes, bucket trucks,harvesters, and woodchippers.
Road side trees are especially prone to biotic stress by exhaust fumes, toxic road debris, soil compaction, and drought which makes them susceptible to fungal infections and various plant pests.[4] When tree removal is not an option, because of road ecologyconsiderations, the main challenge is to achieve road safety (visibility of road signs, blockage-free lanes, etc.) while maintaining tree health.
Altoona
Altoona is a city in south central Pennsylvania Blair County, Pennsylvania, United States. It is the principal city of the Altoona Metropolitan Statistical Area (MSA). The population was 46,320 at the time of the 2010 Census, making it the eleventh most populous city in Pennsylvania. The Altoona MSA includes all of Blair County and was recorded as having a population of 127,089 at the 2010 Census,[6] around 100,000 of whom live within a 5-mile (8.0 km) radius of the Altoona city center according to U.S. Census ZIP Code population data. This includes the adjacent boroughs of Hollidaysburg and Duncansville, adjacent townships of Logan, Allegheny, Blair, Frankstown, Antis, and Tyrone, as well as nearby boroughs of Bellwood and Newry.
Having grown around the railroad industry,[7] the city is currently working to recover from industrial decline and urban decentralization experienced in recent decades. The city is home to the Altoona Curve baseball team of the Double A Eastern League, which is the affiliate of the Major League Baseball team Pittsburgh Pirates. It also houses the 75-plus-year-old Altoona Symphony Orchestra,[8] under the direction of Teresa Cheung. Prominent landmarks include the Horseshoe Curve, the Railroaders Memorial Museum, the Juniata Shops of the Altoona Works, the Mishler Theatre, the Cathedral of the Blessed Sacrament, and the Jaffa Shrine Center.