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北方土石山区薄土坡耕地石坎反坡阶措施减流减沙效益分析

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为解决我国北方土石山区薄土坡耕地水土流失问题,通过布设标准径流小区来研究石坎反坡阶措施的水土保持综合效果.结果表明:石坎反坡阶措施对于坡耕地水土流失调控效果显著,该措施相较于等高耕作措施,坡面径流削减率和泥沙削减率分别达到68.57%和94.29%;石坎反坡阶措施在提高坡面土壤水分含量、提高坡面水分分布均匀度方面能够发挥出良好的作用,该措施相较于等高耕作措施,坡面总体土壤水分含量提高了7.78%;石坎反坡阶措施能够显著提高坡耕地的农作物产量,相较于常规等高耕作措施,玉米产量提高了 12.69%.石坎反坡阶的设计及作用效果研究,丰富了我国北方土石山区薄土坡耕地的水土流失治理途径.
Benefits of Stone-sill Reverse-slope Terraces to Soil and Water Conservation on Thin-soiled Sloping Farmland in Earthy-Rocky Mountainous Area of North China
To address the issue of soil erosion on sloping farmland with thin soils in the earth-rocky mountainous area of north China,we established standard runoff plots to investigate the comprehensive soil and water conserva-tion effectiveness of stone-sill reverse-slope terraces.Our findings revealed a significant control effect on water and soil loss:runoff and sediment were reduced by 68.57%and 94.29%,respectively,compared to contour farming.Stone-sill reverse-slope terraces effectively increased soil moisture content and ensured a more uniform distribution of water across the slopes.The total soil moisture content increased by 7.78%compared to contour farming plots.Additionally,the stone-sill reverse-slope terraces markedly enhanced crop yields on sloping farmland;corn yields increased by 12.69%compared to contour farming.Our design and study of the stone-sill reverse-slope terrace con-tribute to the soil and water conservation methods for thin-soiled sloping farmland in north China's earth-rocky mountainous areas.

stone-sill reverse-slope terracesloping farmland with thin soil layersoil and water lossearthy-rocky mountainous areas of north Chinarunoffsoil moisture

姜宇、程宏远

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中水珠江规划勘测设计有限公司浙江分公司,杭州 310000

石坎反坡阶 薄土坡耕地 水土流失 北方土石山区 径流 土壤水分

2024

长江科学院院报
长江科学院

长江科学院院报

CSTPCD北大核心
影响因子:0.618
ISSN:1001-5485
年,卷(期):2024.41(8)