雨强和地下孔（裂）隙度对喀斯特坡耕地养分流失的影响
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姚一文,戴全厚,甘艺贤,高儒学,严友进,王玉红
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Effects of Rainfall Intensity and Underground Hole (Fracture) Gap on Nutrient Loss in Karst Sloping Farmland
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YAO YiWen,DAI QuanHou,GAN YiXian,GAO RuXue,YAN YouJin,WANG YuHong
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表2 喀斯特坡耕地产流产沙量特征
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Table 2 Effect of rainfall intensity and underground pore fissure degree on surface and underground runoff yield and sediment yield
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指标
Index | 孔(裂)隙度
Fissure porosity (%) | 地表Surface | 地下Underground | | 30 mm·h-1 | 50 mm·h-1 | 70 mm·h-1 | 90 mm·h-1 | 30 mm·h-1 | 50 mm·h-1 | 70 mm·h-1 | 90 mm·h-1 | 产流量Runoff
yield | 1 | 0 | 59.15±3.57Ac | 88.35±4.42Ab | 111.24±5.56Aa | 27.78±1.67Cd | 36.63±1.83Bc | 49.26±2.46Bb | 56.06±3.38Ba | | 3 | 0 | 58.74±3.54Ac | 69.18±3.46Bb | 84.59±4.23Ba | 34.55±2.08Bd | 41.15±2.06Bc | 47.66±2.38Bb | 62.46±3.77Ba | | 5 | 0 | 26.23±1.58Bc | 46.76±2.34Cb | 52.76±2.64Ca | 53.62±3.32Ad | 65.52±3.28Ac | 104.49±5.22Ab | 135.21±6.76Aa | | 产沙量Sediment yield | 1 | 0 | 32.84±1.98Ab | 47.31±2.37Aa | 48.93±2.45Aa | 4.84±0.29Bd | 6.31±0.32Bc | 7.82±0.39Ba | 7.08±0.43Cb | | 3 | 0 | 16.56±1.00Bc | 24.22±1.21Bb | 41.61±2.08Ba | 5.02±0.30Bd | 6.85±0.34Bc | 8.45±0.42Bb | 11.73±0.71Ba | | 5 | 0 | 7.77±0.47Cc | 17.14±0.86Cb | 28.21±1.41Ca | 7.39±0.45Ad | 11.90±0.59Ac | 20.19±1.01Ab | 34.89±2.10Aa |
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