; and (B) by inserting after paragraph (3) the following: (4) the Nation’s farmland is a vital source of environmental services, such as carbon sequestration; ; (2) in subsection (b), by inserting tribal, after State, ; and (3) in subsection (c)— (A) in paragraph (1)— (i) in subparagraph (B), by striking that is used for and inserting that is suitable for ; and (ii) in subparagraph (C), by inserting and is suitable after local importance ; (B) in paragraph (4), by striking ; and and inserting a semicolon; (C) in paragraph (5), by striking the period at the end and inserting a semicolon; and (D) by adding at the end the following: (6) the term conversion means— (A) the physical conversion of farmland to a nonagricultural use; (B) the effective conversion of farmland as a consequence of physical conversion of adjacent farmland, which threatens the continued viability of the land for agricultural use; or (C) a change in management of federally owned land historically used for agriculture to a non-agricultural use; (7) the term farmland of national significance is farmland that is the most suitable for intensive crop and food production, as determined by the Secretary, taking into consideration, among other factors, its physical and chemical characteristics; and (8) the term permanently protected farmland means farmland encumbered by a conservation easement held by the Federal government, by a State, tribal, or local unit of government, or by a land conservation organization, that is perpetual or the maximum number of years allowed by State law. . (b) Farmland protection policy Section 1541 of the Agriculture and Food Act of 1981 ( 7 U.S.C. 4202 ) is amended to read as follows: 1541. Farmland protection policy (a) In general It is the policy of the United States that Federal programs— (1) shall minimize the conversion of farmland to nonagricultural uses; and (2) shall not convert to nonagricultural uses farmland— (A) that is permanently protected farmland