Notwithstanding any provisions of this chapter to the contrary, land within a scenic highway corridor, as defined in subdivision (i) of Section 51201, shall, upon the request of the owner, be included in an agricultural preserve pursuant to this chapter. When such land is included within an agricultural preserve, the city or county within which it is situated shall contract with the owner for the purpose of restricting the land to agricultural use as defined in subdivision (b), recreational use as defined in subdivision (n), open-space use as defined in subdivision (o), compatible use as defined in subdivision (e), or any combination of such uses.