Journal ArticleDOI
Ephemeral gully erosion in southern Navarra (Spain)
TLDR
In this paper, a study has been conducted to describe the different types of ephemeral gullies and to determine their origin, evolution and importance as sediment sources, and three main types were identified according to their origin.Citations
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Gully erosion and environmental change: importance and research needs
TL;DR: In this article, the authors highlight the need for monitoring, experimental and modelling studies of gully erosion as a basis for predicting the effects of environmental change (climatic and land use changes) on gully degradation rates.
Journal ArticleDOI
Predicting soil erosion and sediment yield at the basin scale: Scale issues and semi-quantitative models
Joris de Vente,Jean Poesen +1 more
TL;DR: In this article, the relation between basin area, dominant erosion processes, and sediment yield by a combination of measured sediment yield at different spatial scales in Mediterranean environments is discussed. But the applicability of these models at the basin scale is troublesome.
Journal ArticleDOI
The effects of land uses on soil erosion in Spain: A review
TL;DR: Soil erosion is a key factor in Mediterranean environments, and is not only closely related to geoecological factors (lithology, topography, and climatology) but also to land-use and plant cover changes as discussed by the authors.
Journal ArticleDOI
Impacts of climate change on water erosion: A review
Zhiying Li,Haiyan Fang +1 more
TL;DR: In this article, the authors reviewed the achievements regarding the impacts of climate change such as changed rainfall, vegetation cover, and land management on water erosion and pointed out the critical research needs to better understand and predict the responses of soil erosion to a changing climate in the future.
Journal ArticleDOI
Erosion in Mediterranean landscapes: Changes and future challenges
TL;DR: In this article, the authors analyzed the main environmental and human features related to soil erosion processes, and the main factors that explain the extreme variability of factors influencing soil erosion, particularly recent land use changes.
References
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Book
Predicting rainfall erosion losses : a guide to conservation planning
W. H. Wischmeier,Dwight D. Smith +1 more
TL;DR: The Universal Soil Loss Equation (USLE) as discussed by the authors is a model designed to predict the average rate of soil erosion for each feasible alternative combination of crop system and management practices in association with a specified soil type, rainfall pattern and topography.
Journal ArticleDOI
Stream gradient as a function of order, magnitude, and discharge
TL;DR: In this article, the rates of change in stream gradient derived from the power functions above yield almost identical averages for entire channel networks. But these values are well within the range of variation for published data obtained for the hydraulic geometry equation (averages between −0.49 and 0.95).
Journal ArticleDOI
Incipient Motion and Sediment Transport
TL;DR: In this paper, a new criterion based on average flow velocity, fall velocity, and shear velocity Reynolds number is proposed to calculate the dimensionless critical unit stream power in a dimensionless stream power equation for sediment transport, which is the ratio of the time rate of potential energy expenditure per unit weight of water and the terminal fall velocity of sediment.
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Where do channels begin
TL;DR: In this paper, the authors report observations from several soil-mantled regions of Oregon and California, which show that the source area above the channel head decreases with increasing local valley gradient for slopes ranging from 5 to 45 degrees.
Journal ArticleDOI
Topographic Effects on the Distribution of Surface Soil Water and the Location of Ephemeral Gullies
TL;DR: In this article, the relationship between topographic attributes and the distribution of surface soil water content in a small bare-fallow cultivated catchment was examined and the most statistically significant regression equations describing this relationship contained the independent topographic variable aspect and the compound variable ln(A), where A,=Ab/S and A^ is the local upslope contributing area per unit width of contour line and S is the slope The index ln, a measure of soil saturation, and the product of A^ and S (A^S) were both capable of predicting