ABSTRACT

Tillage erosion is considered a major contributor to total soil erosion besides water erosion. However, tillage erosion has been neglected in Czechia. Therefore, our main goal was to analyse and compare the effect of tillage erosion with that of water erosion. The combined effect of both types of soil erosion was modelled at high spatial resolution. The Universal Soil Loss Equation approach was used to calculate water erosion, while a tillage model (diffusion approach), which takes into account the slope curvature and the tillage transport coefficient, was used to calculate tillage erosion. The constructed map showed that 48% of agricultural soils is threatened by total soil erosion at high rates. Furthermore, the area threatened by tillage erosion is almost 1.5 times larger than that endangered only by water erosion, and the mean contribution of tillage erosion to total soil erosion ranges between 20% and 30%.

摘要

除水蚀外，耕作侵蚀被认为是造成土壤侵蚀总量的主要因素。然而，在捷克，耕作侵蚀被忽视了。因此，我们的主要目标是分析和比较耕作侵蚀与水侵蚀的影响。两种土壤侵蚀的综合影响以高空间分辨率建模。通用土壤流失方程方法用于计算水蚀，而耕作模型（扩散法）考虑了坡度曲率和耕作传输系数，用于计算耕作侵蚀。构建的地图显示，48% 的农业土壤受到高速率总土壤侵蚀的威胁。此外，受耕作侵蚀威胁的面积几乎是仅受水侵蚀威胁的面积的 1.5 倍，