The street tree committee shall have the authority to adopt rules and regulations
as may be necessary for the purpose of carrying out its functions. Regulations for
the planting, care, pruning and removal of trees shall not only be aimed at the elimination
of economic waste by reason of damage to public property and the property of others
in the interest of public health, safety and welfare, but also for the aesthetic appearance
of streets, highways, parks and other public areas in the city.