After wildfires, land managers must assess the potential for increased flooding, erosion, and sedimentation, and the increased threat these effects may pose to people, structures, and valued resources. A Web-based Erosion Risk Management Tool (ERMiT) has been developed to predict surface erosion from postfire hillslopes, and to evaluate the potential effectiveness of various erosion mitigation ...

As in many areas of high relief, debris flows are an important process linkage between hillslopes and the Green River in the canyons of the eastern Uinta Mountains, yet the physical conditions that lead to debris flow initiation are unknown. A recent episode of enhanced debris-flow and wildfire activity provided an opportunity to examine the geomorphic impact of fire and the processes by which ...

1. Definitions 1.1. Types of Aridity 1.2. Levels of Aridity 2. Paleoperspective 3. People and Land Use in Arid Lands 3.1. Foragers/Hunter–gatherers 3.2. Agriculturists 3.3. Pastoralists 4. Geomorphology of Arid and Semiarid Lands 5. Biological Diversity in Arid Lands 5.1. Arid and Semiarid Lands Plants and their Uses 5.2. The Future of the Conservation of Wild Plants in Arid Regions 6. Climatic...

Field surveys, location-for-time reasoning, and computer modeling were used to study the evolution of slopes on valley walls of abandoned bedrock meanders on the Eastern Highland Rim, Tennessee. Hillslopes on the undercut slopes of cutoff incised meanders were ordered as to relative age by the height of their meander floors above the modern stream level. The assumption is that the undercut slop...

Steep, soil-mantled hillslopes evolve through the downslope movement of soil, driven largely by slope-dependent transport processes. Most landscape evolution models represent hillslope transport by linear diffusion, in which rates of sediment transport are proportional to slope, such that equilibrium hillslopes should have constant curvature between divides and channels. On many soil-mantled hi...

We analyzed potential land degradation processes in semiarid regions worldwide using long time series of remote sensing images and the Normalized Difference Vegetation Index (NDVI) for the period 1981 to 2011. The objectives of the study were to identify semiarid regions showing a marked decrease in potential vegetation activity, indicative of the occurrence of land degradation processes, and t...

Abstract. We used numerical modelling to explore the role of vertical compartmentalization hillslopes on groundwater flow and recession discharge. found that, when hydraulic properties are vertically compartmentalized, streamflow behaviour may strongly deviate from what is predicted by theory that considers drainage shallow reservoirs with homogeneous properties. further identified hillslope co...

Hillslopes in humid regions are typically convex to concave in profi le and have a relatively thick, continuous regolith cover. Conversely, hillslopes in arid regions are typically cliff-dominated and have a relatively thin, discontinuous regolith cover. The difference between these two end-member slope forms is classically attributed to climate, but climate, tectonics, and lithology all play a...