The purpose of this permanent extraterritorial zoning article is to promote the public health, safety, morals and general welfare and to preserve existing controls over land uses, uses of land and improvements within the area in which the governing body of the city, by resolution adopted on September 24, 1968, determined to exercise the extraterritorial zoning powers granted by § 62.23(7a), Wisconsin Statutes, and it is the intention of this article to make permanent such zoning uses, controls and regulations as the Extraterritorial Zoning Committee has recommended and to make these regulations extend to all land specifically described hereafter.