Notwithstanding any provisions of this chapter, the grant of any easement to a nonprofit organization shall be effective upon its acceptance by such organization. However, for the purposes of this chapter and Sections 421 to 432, inclusive, of the Revenue and Taxation Code, no such easement shall be considered as granted pursuant to this chapter unless the grant of such easement has been approved by the county or city in which the land lies pursuant to the provisions of this article.