Cal. Gov. Code § 51205

Notwithstanding any provisions of this chapter to the contrary, land devoted to recreational use or land within a scenic highway corridor, a wildlife habitat area, a saltpond, a managed wetland area, or a submerged area may be included within 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 may contract with the owner for the purpose of restricting the land to recreational or open space use and uses compatible therewith in the same manner as provided in this chapter for land devoted to agricultural use. For purposes of this section, where the term “agricultural land” is used in this chapter, it shall be deemed to include land devoted to recreational use and land within a scenic highway corridor, a wildlife habitat area, a saltpond, a managed wetland area, or a submerged area, and where the term “agricultural use” is used in this chapter, it shall be deemed to include recreational and open space use.