Ƙasar da ke da matukar lalacewa

A cikin manufofin aikin gona na Amurka, ƙasa mai ƙyalli (HEL) tana nufin ƙasar da ke da saurin zazzaɓi, gami da filayen da ke da aƙalla 1/3 ko 50 acres (200,000 m2) na ƙasa tare da yuwuwar zaizayar ƙasa na aƙalla sau 8 ƙimar T."7 C.F.R. Subpart B—Highly Erodible Land Conservation Title 7 - Agriculture". Justia.com. Retrieved 17 July 2011. Kimanin kadada miliyan 101 (410,000 km2) na filayen noma sun dace da wannan ma'anar HEL, bisa ga Inventory albarkatun ƙasa na 1997."Soil Erosion" (PDF). United States Department of Agriculture. Archived from the original (PDF) on May 27, 2006. Retrieved 17 July 2011 Gonakin da ke noman ƙasa mai ƙyalli da ƙaƙƙarfan kwangilolin samar da kayayyaki dole ne su kasance cikin bin tsarin kiyayewa wanda ke kare wannan ƙasar noman."Farm and Commodity Policy: Glossary". United States Department of Agriculture. Archived from the original on 2 September 2011. Retrieved 17 July 2011.

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