Filters: Tags: Water Erosion (X)8 results (97ms)
Evaluation of a model framework to estimate soil and soil organic carbon redistribution by water and tillage using 137Cs in two U.S. Midwest agricultural fields
Cultivated lands in the U.S. Midwest have been affected by soil erosion, causing soil organic carbon (SOC) redistribution in the landscape and other environmental and agricultural problems. The importance of SOC redistribution on soil productivity and crop yield, however, is still uncertain. In this study, we used a model framework, which includes the Unit Stream Power-based Erosion Deposition (USPED) and the Tillage Erosion Prediction (TEP) models, to understand the soil and SOC redistribution caused by water and tillage erosion in two agricultural fields in the U.S. Midwest. This model framework was evaluated for different digital elevation model (DEM) spatial resolutions (10-m, 24-m, 30-m, and 56-m) and topographic...
Categories: Publication; Types: Journal Citation; Tags: Cs-137, Deposition, Erosion, Midwest United States, Soil carbon,
The water erosion potential is calculated using the Revised Universal Soil Loss Equation (RUSLE. It is based on the rainfall erosivity (R), soil erodibility (K), slope steepness (S), and tolerable soil loss (T) is calculated as R*K*S / T where T is the tolerable soil loss. The water erosion potential assumes that there is no cover and no management practices and is base on in the instrinsic properties of the soil and the local climate and topography.
Types: Downloadable; Tags: BLM, Bureau of Land Management, DOI, Geology, Geospatial,
Wind and water erosion and transport in semi-arid shrubland, grassland and forest ecosystems: quantifying dominance of horizontal wind-driven transport
Soil erosion is an important process in dryland ecosystems, yet measurements and comparisons of wind and water erosion within and among such ecosystems are lacking. Here we compare wind erosion and transport ï¬�eld measurements with water erosion and transport from rainfall-simulation for three different semi-arid ecosystems: a shrubland near Carlsbad, New Mexico; a grassland near Denver, Colorado; and a forest near Los Alamos, New Mexico. In addition to comparing erosion loss from an area, we propose a framework for comparing horizontal mass transport of wind- and water-driven materials as a metric for local soil redistribution. Median erosion rates from wind for vertical mass ï¬‚ux measurements (g mâˆ’2 dâˆ’1)...
Categories: Publication; Types: Citation, Journal Citation; Tags: Earth Surface Processes and Landforms, aeolian sediment transport, drylands semi-arid ecosystems, water erosion, wind erosion
Biological soil crusts (BSCs) are the dominant living cover in many drylands of the world. They possess many features that can influence different aspects of local hydrologic cycles, including soil porosity, absorptivity, roughness, aggregate stability, texture, pore formation, and water retention. The influence of biological soil crusts on these factors depends on their internal and external structure, which varies with climate, soil, and disturbance history. This paper presents the different types of biological soil crusts, discusses how crust type likely influences various aspects of the hydrologic cycle, and reviews what is known and not known about the influence of biological crusts on sediment production and...
Categories: Publication; Types: Citation, Journal Citation; Tags: Hydrological Processes, arid, desert, infiltration, microbiotic crusts,
This feature class includes monitoring data collected nationally to understand the status, condition, and trend of resources on BLM lands. Data are collected in accordance with the BLM Assessment, Inventory, and Monitoring (AIM) Strategy. The AIM Strategy specifies a probabilistic sampling design, standard core indicators and methods, electronic data capture and management, and integration with remote sensing. Attributes include the BLM terrestrial core indicators: bare ground, vegetation composition, plant species of management concern, non-native invasive species, and percent canopy gaps (see Entity/Attribute Section for exact details on attributes). Data were collected and managed by BLM Field Offices, BLM Districts,...
Toward a more holistic perspective of soil erosion: Why aeolian research needs to explicitly consider fluvial processes and interactions
Soil erosion is driven by not only aeolian but also fluvial transport processes, yet these two types of processes are usually studied independently, thereby precluding effective assessment of overall erosion, potential interactions between the two drivers, and their relative sensitivities to projected changes in climate and land use. Here we provide a perspective that aeolian and fluvial transport processes need to be considered in concert relative to total erosion and to potential interactions, that relative dominance and sensitivity to disturbance vary with mean annual precipitation, and that there are important scale-dependencies associated with aeolianâ€“fluvial interactions. We build on previous literature...
Categories: Publication; Types: Citation, Journal Citation; Tags: Aeolian Research, aeolian, dust, fluvial, sediment,
This map shows soil factors that may contribute to wind or water erosion, derived from STATSGO and SSURGO soil data and slope information.
Categories: Data, Map; Types: ArcGIS REST Map Service, Map Service; Tags: Colorado Plateau, Soils, Water Erosion, Wind Erosion
Soils in MAR that are at Risk of Water Erosion. These data are provided by Bureau of Land Management (BLM) "as is" and may contain errors or omissions. The User assumes the entire risk associated with its use of these data and bears all responsibility in determining whether these data are fit for the User's intended use. These data may not have the accuracy, resolution, completeness, timeliness, or other characteristics appropriate for applications that potential users of the data may contemplate. The User is encouraged to carefully consider the content of the metadata file associated with these data. The BLM should be cited as the data source in any products derived from these data.
Types: Live Data; Tags: BLM, Bureau of Land Management, DOI, Disturbance, Geology,