Upon the authorization of the governing authority, the local planning commission may make and certify to its governing authority or authorities the text of the recommended zoning ordinance or resolution or both and the zoning maps. Then the governing authority of the municipality or county may exercise the powers granted in this chapter and, for the purposes mentioned, shall create zoning districts of such number, shape and size as it may determine to be best suited to carry out the purposes of this chapter. Within such districts, the governing authority may regulate the erection, construction, reconstruction, alteration, and use of buildings and structures and the uses of land in accordance with the first five-year increment of the comprehensive plan. All such regulations shall be uniform for each class or kind of building or use throughout each district, but the regulations in one district may differ from those in other districts and they may be amended from time to time. The regulations may provide that land, buildings and structures and the uses thereof which are lawful at the time of the enactment or amendment of zoning regulations may be continued although not in conformity with such regulations or amendments, hereinafter called a nonconformity. The governing authority of any municipality or county may provide in the zoning ordinance or resolution for the continuance, restoration, reconstruction, extension, or substitution of nonconformities. Such governing authority may also provide for the termination of any nonconformity by specifying the period or periods in which the nonconformity shall be required to cease or brought into conformance, or by providing a formula whereby the compulsory termination of nonconformities may be so fixed as to allow for the recovery or amortization of the investment in such nonconformity.