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In the late 60's, street trees were used to solve urban environmental issues, such as air and noise pollution. The Tokyo Olympic Games also gave the government a valid reason to plant more trees in the city. There were 12,000 street trees planted in Tokyo by 1965. [122] The species composition of street trees changed dramatically from 1980 to 1996.
“Trees are like cities,” the city’s mayor pro tem says. “If we’re not growing, we’re dying. We’ve got to protect them.”
Tijuca Forest in Rio de Janeiro, Brazil. In many countries there is a growing understanding of the importance of the natural ecology in urban forests. There are numerous projects underway aimed at restoration and preservation of ecosystems, ranging from simple elimination of leaf-raking and elimination of invasive plants to full-blown reintroduction of original species and riparian ecosystems.
A pollarded tree has a drastically different appearance than an unpruned tree, being much shorter with stunted, club-like branches. Although pollarding requires frequent maintenance (the trees must usually be repruned every year), it creates a distinctive shape that is often sought after in plazas, main streets, and other urban areas.
For the past 30 years I’ve boiled my list of recommended large shade trees for North Central Texas down to seven: live oak, Shumard red oak, Chinquapin oak, bur oak, pecan, cedar elm and Chinese ...
Find out what types of oak trees are best for your growing conditions, from dry to wet, and sandy to clay soil. ... Chinkapin oak grows 40-60 feet tall and 50-70 feet wide and is hardy in Zones 5 ...
The largest known single-stemmed tree of this species in the world (216.5 cm diameter) is located on Princes Street in Hamilton, New Zealand. [13] Because of its big and lovely colourful flowers, genetic improvement for cold resistance in Dublin area in Ireland is being carried out by collecting seeds in the coldest parts of Western and ...
Sorbus americana is cultivated as an ornamental tree, for use in gardens and parks. It prefers a rich moist soil and the borders of swamps, but will flourish on rocky hillsides. A cultivar is the red cascade mountain-ash, or Sorbus americana 'Dwarfcrown'. It is planted in gardens, and as a street tree. [11]