【摘要】 坡耕地是东北黑土区水土流失发生的主要源地，坡耕地治理是保护黑土地、治理水土流失的重中之重。目前东北黑土区坡耕地界定及其坡度分级尚无统一定论，给黑土地研究、保护和治理带来一定困扰。结合相关标准、文献和数据资料，对水土流失动态监测成果进一步分析，提出以0.25°作为东北黑土区坡耕地临界坡度，建立了黑土区≤0.25°、>0.25°～2°、>2°～6°、>6°～15°、>15°共5级耕地坡度分级标准，建议在黑土地保护相关规划布局及水土流失精准治理中应用。更多还原

【Abstract】 Slope farmland is the main source of soil erosion and water loss in the black soil area of Northeast China,and the management of slope farmland is important for protecting black soil and controlling soil erosion and water loss. At present,there is no unified definition and grading standard of slope farmland in the black soil area of Northeast China,which brings challenges to the research,protection,and management of black soil. Based on relevant standards,papers,and data,the paper analyzed dynamic monitoring results of soil erosion and water loss. It proposed to use 0.25° as the critical slope of slope farmland in the black soil area of Northeast China,and established 5 levels of farmland slope classification standards in the black soil area,including ≤0.25°,>0.25° ～2°,>2° ～6°,>6° ～15°,>15°． It is recommended to apply these standards in the planning and layout of black soil protection and precise control of soil erosion and water loss.更多还原