土壤侵蚀对紫色土坡耕地耕层物理及力学特性的影响
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江娜,史东梅,蒋光毅,宋鸽,司承静,叶青
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Effects of Soil Erosion on Physical and Mechanical Properties of Cultivated Layer of Purple Soil Slope Farmland
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Na JIANG,DongMei SHI,GuangYi JIANG,Ge SONG,ChengJing SI,Qing YE
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表2 不同侵蚀程度下耕层土壤渗透性能主成分分析
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Table 2 Principal component analysis of tillage soil permeability under different erosion degrees
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| 主成分 Principal component | Norm值
Norm value | | F1 | F2 | | X1饱和导水率Saturated hydraulic conductivity | 0.021 | 0.997 | 1.02 | | X2初始入渗率Initial soil infiltration | 0.978 | 0.125 | 1.64 | | X3稳定入渗率Stable infiltration rate | 0.939 | -0.161 | 1.58 | | X4平均入渗率Average infiltration ratio | 0.982 | 0.008 | 1.64 | | 主成分特征值Principal component eigenvalue | 2.802 | 1.036 | - | | 主要方差贡献率Contribution rate of major variance | 70.06 | 25.91 | - | | 主要成分累积贡献率Cumulative contribution rate of major components | 70.06 | 95.97 | - |
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