土壤侵蚀对紫色土坡耕地耕层物理及力学特性的影响

江娜,史东梅,蒋光毅,宋鸽,司承静,叶青

Effects of Soil Erosion on Physical and Mechanical Properties of Cultivated Layer of Purple Soil Slope Farmland

Na JIANG,DongMei SHI,GuangYi JIANG,Ge SONG,ChengJing SI,Qing YE

表1 不同侵蚀程度下坡耕地原位模拟小区的原始土层剩余厚度

Table 1 Residual thickness of original soil layer in in situ simulation plot of sloping farmland with different erosion degree

原始不同土层(hi) Original different soil layers (cm) 模拟侵蚀深度/模拟侵蚀年限Simulated erosion depth (cm)/Simulated erosion age (a) 0/0 5/20 10/40 15/60 20/80 S-0 S-5 S-10 S-15 S-20 0-20 20 15.55 12.09 9.40 5.50 20-25 - 4.45 3.46 2.69 3.90 25-30 - - 4.45 3.46 2.69 30-35 - - - 4.45 3.46 35-40 - - - - 4.45