2 edition of Soil erosion and sediment yield in ten water quality study areas in South Dakota found in the catalog.
by Soil Conservation Service, U.S. Dept. of Agriculture in Huron, S.D
Written in English
|Other titles||Soil erosion and sediment yield|
|The Physical Object|
|Pagination||28 leaves,  leaves of plates :|
|Number of Pages||28|
Soil erosion occurs when natural forces, such as wind and water, act on the soil. Man can also cause soil erosion by such practices as tilling a farmer's field or the clearing of vegetation. If the soil is improperly managed, however, infiltration into the soil can be greatly reduced and the water may run off the surface, carrying soil particles with it. This process, called soil erosion, has been a major cause of soil degradation in North Carolina for many years. Further, damage to water quality occurs when this eroded soil.
Mismanagement of soil and water resources may not only contribute to an escalation of global poverty but also jeopardize ecosystem services, with significant costs to the environment. Although not concentrated within one geographic location (3, million hectares), an equivalent of approximately 24 % of the earth’s land surface is degraded land, and about 2 billion people (one third of the. In this study, a GIS‐based distributed soil erosion/deposition model was used to simulate the potential of land‐use and cover (LUC) changes and conservation measures for reducing water induced soil erosion and potential sediment yield for two catchments in northern Ethiopia.
this study, we examined sediment yield from an upper mountainous watershed, Yahuecas, contributing sediment to Lago Yahuecas reservoir and eventually Guánica Bay, Puerto Rico, to gain a better understanding on sediment loss. This watershed was chosen because it was the only watershed where runoff was monitored in Guánica Bay basin. The Soil and Water Assessment Tool was calibrated and. Abstract Since the s, the implemented soil conservation measures on steep slopes and the densely planted shelterbelts as well as the constructed reservoirs and ponds in Baiquan County, Impact of Land Use Change and Dam Construction on Soil Erosion and Sediment Yield in the Black Soil Region, Northeastern China.
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Rill erosion refers to the development of small, ephemeral concentrated flow paths which function as both sediment source and sediment delivery systems for erosion on hillslopes.
Generally, where water erosion rates on disturbed upland areas are greatest, rills are active. Flow depths in rills are typically of the order of a few centimeters (about an inch) or less and along-channel slopes may.
Search the history of over billion web pages on the : A US Department of Agriculture publication on soil erosion described how “certain piedmont areas whose records are known have, within a period of 30 years, lost their topsoil entirely, 10 inches or more of loam and clay loam having washed off down to Cited by: Soil erosion is a significant concern when considering regional environmental protection, especially in the Yellow River Basin in China.
This study evaluated the temporal-spatial interaction of land cover status with soil erosion characteristics in the Longliu Catchment of China, using the Soil and Water Assessment Tool (SWAT) by: In this study, pond-induced impacts on soil erosion and sediment transport were investigated at the scale of the French Claise basin.
In order to determine erosion and sediment transport patterns of the Claise, the Coordination of Information on the Environment (CORINE) erosion and Soil and Water Assessment Tool (SWAT) models were used. Soil erosion and sediment loss from construction sites has been documented as a major source of water pollution (refer to USGS study).Bare soil exposed to a rain event can become quickly eroded, leading to sediment that moves into adjacent storm sewers or lakes and streams.
Soil Quality and Soil Erosion Edited by Rattan Lal E-book. This book examines the impact of erosion on agricultural land.
Topics include erosion impact on crop yield, effect of forest management on erosion and soil productivity, and applying soil quality concepts to combat soil erosion. Sediment delivery ratio (SDR) is defined as the sediment yield from an area divided by the gross erosion of that same area.
SDR is expressed as a percent and represents the efficiency of the watershed in moving soil particles from areas of erosion to the point where sediment yield is measured.
Different sources of erosion have different SDR’s. The Erosion Potential Method is a model for qualifying the erosion severity and estimating the total annual sediment yield of a catchment. The method includes a diverse set of equations, which are influenced by different factors such as geology, morphology, climate and soil use.
This study describes a PyQGIS YES plug-in, which allows a semiautomatized use of the Erosion Potential Method in. magnitude and distribution of soil erosion and sediment yield, and temporal trends in sediment yield from the Upper Yangtze basin.
INTRODUCTION The Yangtze River, the largest river in China, flows from west to east through the middle part of the country, covering a drainage area of x km2, or about 19% of the total territory of China. model estimates this sediment yield, as displayed in Table 1.
Table 1. Effects of management practices on controlling erosion on a road bank. Estimated sheet and rill erosion and sediment yield using RUSLE during a construction year in Nashville, TN1. Site Conditions2 Soil Loss from Sediment Yield at-1st 6 mo 2nd 6 mo Road Bank (t/a/y) Base of.
The gross soil erosion in each cell was calculated using the Universal Soil Loss Equation (USLE) by carefully determining its various parameters. The concept of sediment delivery ratio (SDR) was used for determination of the total sediment yield of each catchment during isolated storm events.
Erosion in the context of soil and watershed conservation is the detachment and movement of soil particles by natural forces, primarily water and wind. More broadly, erosion is the process of wearing away rocks, geologic, and soil material via water, wind, or ice (e.g., glaciers).
The factors controlling the occurrence of these phenomena are listed and explained subsequently. The state of the mathematical modeling on this topic is detailed out at the end of the paper.
The exhaustive literature presented herein on the topic of soil erosion and sediment yield shall be of immense use to the water resources planners and. Sedimentation is an important parameter to assess the life of a reservoir. Seventy-eight years ago, Cook was the first to identify mathematically, the three major factors affecting soil erosion in the catchment of a reservoir.
As sedimentation is dependent on sediment yield and sediment yield depends on soil erosion, it is required to predict all three parameters to estimate the life of a. Soil erosion is a gradual process that occurs when the impact of water or wind detaches and removes soil particles, causing the soil to deteriorate.
Soil deterioration and low water quality due to erosion and surface runoff have become severe problems worldwide. The problem may become so severe that the land can no longer be cultivated and must be abandoned.
and efficient tool for predicting long-term water erosion potential and assessing erosion impacts of various cropping systems and conservation support practices. Keywords: ArcView GIs, RUSLE, SEDD, sediment delivery, sediment yield, soil erosion Water erosion is a serious and continuous environmental problem.
Rill and interrill. • The soil erosion processes, prevention, and control are described in Part I that includes chapters on surface erosion, gully erosion, and soil mass movement. • The focus of Part II is placed on sediment supply, transport, and outflows and consists of chapters on sediment sources and its transport in a stream; and the sediment yield from a.
Providence) with 10 streams (fig. 1) to measure sediment erosion before and after forest restoration activities like controlled burns and timber harvests of trees with diameters less than 30 in. The Bull site lies between 6, and 8, ft in elevation, so it has colder water and.
Water quality considerations, including sediment delivery, are critical to understand in the context of forest management throughout the U.S. Sediment is the number one pollutant of rivers and streams in the U.S. and states recommend or require, the use of best management practices (BMPs) or other protective measures to reduce soil erosion and the potential delivery of sediment to waterbodies.
The results of long-term soil erosion research laid the basis for the actual research project. According to these results, soil erosion contributes minimally to sediment yield on the Jura Plateau.
On the loess-covered high terrace of the test-site "Möhliner Feld" a large percentage of the soil. Land Degradation Soil degradation is the decline in soil quality caused by its improper use, usually for agricultural, pastoral, industrial or urban purposes.
Soil degradation is a serious global environmental problem and may be exacerbated by climate change. It encompasses physical (soil erosion), chemical (salinity and alkalinity, pollution) and biological deterioration (pollution and.Both 'Soil Erosion Rate' and 'Sediment Yield' have to be seen with different perspective.
SER is related to a process in the up-stream portion and SY is a phenomenon in the downstream portion of.