The intent of this article is to encourage the retention of existing trees and to provide for the planting of new trees along streets, on two-family, multi-family and group living residential properties, and to provide planting and maintenance standards for required trees and landscaping. Trees and landscaping provide shade, reduce heat island effects in paved areas, improve the appearance of Iowa City streets and create attractive and functional living environments that will protect and enhance property values. Standards for screening and buffering are contained in chapter 5, article F, "Screening And Buffering Standards", of this title. (Ord. 05-4186, 12-15-2005)