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耕作侵蚀是国际上新近开展的一个研究领域。为了对中国黄土地区的耕作侵蚀规律进行定量描述 ,采用施放小立方块作为示踪材料进行耕作试验及测量来示踪和监测土壤运动 ,并通过相关分析与理论推导 ,对该地区的耕作侵蚀进行了模拟 ,获得了能够直接计算出坡面剖面任何一点净侵蚀模数的耕作侵蚀模型 ,结果表明 ,在采用当地由动物牵引的传统犁在坡面上自下而上进行往返横坡等高向下翻土耕作方式下 :1)一次耕作导致的耕层土壤朝坡向方向平均水平运动距离随坡度的变化表现为线性相关 ;2 )一次耕作导致的坡面剖面任何位置耕层断面的净侵蚀模数 ,受土壤容重、耕作深度、土壤与耕作条件决定的系数和地形曲率的影响。
Tillage erosion is a newly developed field in the world. In order to quantitatively describe the tillage erosion in loess areas in China, tillage experiments and measurements were conducted by using small clumps as tracing materials to track and monitor soil movement. Through correlation analysis and theoretical derivation, tillage erosion in the area was carried out The model of tillage erosion, which can directly calculate any net erosion modulus of slope profile, was obtained. The results show that the traditional plow with local traction by animal drag the contour of the reciprocating slope from bottom to top Under tillage tillage mode: 1) The average horizontal movement distance of tillage soil in the direction of slope due to one tillage shows a linear correlation with the change of slope; 2) The net erosion of tillage section at any position in the slope profile caused by one tillage Modulus, affected by soil bulk density, tillage depth, factors determined by soil and tillage conditions, and topography curvature.