Nachtergaele J, Poeson A, Steegen I, Takkcn I, Beuselinck L, Vandekerckhove L, Govers G (2001) The value of a physical based model versus an empirical approach in the prediction of ephemeral gully
erosion for loess-derived soils.
Accuracy of methods for field assessment of rill and ephemeral gully
erosion " Catena, 67: 10.
They used historical precipitation data, on-site field observations, and recently developed watershed-modeling technology to simulate the effect of tillage practices on long-term ephemeral gully growth and evolution.
Their findings suggest that, on average, tillage in areas prone to ephemeral gully erosion can produce significantly higher soil erosion rates compared to those same regions under no-till management practices.
If we include ephemeral gully
erosion in those estimates and include degradation of water quality and aquatic resources in our calculations, I fear the number of acres eroding at "unsustainable" rates would be much larger than 100 million acres.
erosion--ephemeral gullies are large rills.
The other study focused on the fact that sediment delivery information from ephemeral gullies is weak and tried to estimate sediment movement in a small ephemeral gully under forest vegetation (Hansen and Law forthcoming).
2001) that predicting gully length is most important in assessing total eroded ephemeral gully volume.
Assessment of factors affecting ephemeral gully
erosion in cultivated catchments of the Belgian Loam Belt.
The fact that these areas are also prone to ephemeral gully formation is not considered here, as the (R)USLE was not designed to account for this erosion form.
The applicability of the proposed algorithm may be significantly improved in the future by including procedures to predict the location and intensity of ephemeral gully erosion which is not accounted for by the USLE.
Soil conservationists began systematic study of ephemeral gully
erosion only in the last decade (5).