2 edition of Soil erosion control structures on skidtrails found in the catalog.
Soil erosion control structures on skidtrails
Walter J. Kidd
1963 by Intermountain Forest & Range Experiment Station, Forest Service, U.S. Dept. of Agriculture in Ogden, Utah .
Written in English
Includes bibliographical references.
|Statement||by W.J. Kidd, Jr.|
|Series||U.S. Forest Service research paper INT -- 1.|
|The Physical Object|
|Pagination||8 p. :|
If tilling must continue, plow fields on a contour, reduce tilling speed and run tillage tools at the same speed and depth. They were developed independently but bear close kinship to one another; each is based on the notion of partitioning the Universal Soil Loss Equation USLEwhich is a predictive model for rainfall erosion, into its physical and management components. Policymakers are groping for a precise defini- tion of erodible soil that requires public action. First, estimates for the entire United States in the NRI showed substantial wind erosion, which makes a classifica- tion based solely on sheet and rill erosion questionable. Chi-square statistics for distributions of erosion rates and erosion classes, respectively, were 0. The chi-square statistic for the distribution of subclass e cropland across erosion classes in and was 0.
The book covers a wide range of erosion-related themes from a variety of points of view assessment, modeling, mitigation, best practices etc. The flat, step-like bench terraces are now not useful. Recommendations to reduce tillage erosion 1. Soil Erosion provides complete coverage of the physical causes, processes, and effects of this environmental problem from its origins to planning for future conservation and remediation.
Both utilize the concept of triage, borrowed from medical practice, in which three groups are defined: land that needs no erosion treatment because it has no erosion potential; land with so much erosion potential that no treatment will reduce erosion to acceptable levels; and the remaining land for which treatment is needed and will reduce erosion to acceptable levels. When the layer of topsoil is removed, ground becomes unproductive and crops decrease. An improved soil erosion classification for conservation policy. Visual evidence of tillage erosion includes: loss of organic rich topsoil and exposure of subsoil at the summit of ridges and knolls; and undercutting of field boundaries, such as fence lines, on the downslope side and burial on the upslope side.
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But there are still not enough data supporting these relation- ships to make national applications of such modeling results.
Tillage erosion moves soil down slope to areas where water erosion is most intense, so tillage erosion is linked to water contamination. Field shelter belts made from trees and tall grasses provide some extra protection against wind erosion by reducing the wind velocity.
Wind erosion estimates now available for the United States from the NRI show that 40 percent of all erosion on cropland is from wind; in 12 states wind causes more than half the cropland erosion.
T subclass in the agriculture capability rating for a given soil series or phase, indicating a slope limitation. Bills, N. Comprehensive wind erosion estimates may allow wind-induced erosion to be added to these classification systems. A different picture emerges when capability classes in the erodible subclass e are compared with the erosion classes developed here see Table 3.
Keywords Bodenerosion Bodenerosionsmodelle Bodenkonservierung Gebirge Reservoir Sediment development erosion soil soil conservation soil erosion soil erosion models Editors and affiliations.
Group 1 land, under AFT's system, is not threatened by erosion and is capable of sustaining continuous, intensive agricultural use. Group 3 consists of highly erodible land for which conversion to permanent cover is probably the most cost-effective means of TABLE 5 U.
Klingebiel, A. Soils with other limitations can also have substantial erosion, but they are not designated in subclass e. In between two adjacent ridges runoff or irrigation water is detained for a longer period of time, which in turn, increases the opportunity time for the water to infiltrate into the soil and increase the soil moisture.
A whole new technology is emerging in terms of geo- graphic information systems that will allow users to combine this information, analyze it, and display it rapidly in many different forms.
Site visit Soil erosion control structures on skidtrails book identify areas prone to tillage erosion Land that is hilly is sensitive to tillage erosion. Over the last 20 years, the need for more accurate assessments of soil losses and sediment yields has led to the development of some highly complex, process-based soil erosion models.
The AFT, in a comprehensive review of soil conservation policy, recommended that "cropland in the U. However, there is information in these reports that does help in the identification of areas prone to tillage erosion as well as wind and water erosion. Grassed waterways are usually used on farms.
Topsoil is being removed from the knolls and Soil erosion control structures on skidtrails book in the depressions. Buffer strips provide very good protection and effective control of soil erosion from strips of intertilled crops.
Construction sites and sloping fields often show signs of rill erosion. These are going to offer some very new opportunities in the measurement of slope, aspect, and drainage, which will contribute substantially to studies of erosion and to allowing users to begin to address--both in a fairly local way and with broad regional perspective--detailed, comprehensive studies of the physiographic character of the land that will help advance many of these studies.
Third, wind erosion--now recognized as an important cause of soil loss--is not encompassed in existing systems but clearly needs to be. This book will help to implement state-of-the-art soil erosion prediction technologies within soil and water conservation planning and assessment.
It identifies resources having tractable erosion problems with more precision than the often-used land capability class.
Fields with many small hills are more prone to tillage erosion than fields with a few large hills. This should be followed by the implementation of BMPs to reduce tillage erosion.10 Soil Management and Tillage F.
William Simmons niques to control soil erosion was the passage of the Food Security Act. Provisions of this act require farmers or structures may also be required.
Some of the conserva-tion tillage systems are described here. Five main techniques that can help in controlling soil erosion are as follows: (i) Contour Farming (ii) Strip Cropping (iii) Terracing (iv) Gully Reclamation (v) Shelter Belts! Soil erosion can be controlled by adopting land management practices and also by changing the pattern of.
Sediment and Erosion on the Trail Motorized trails, if not constructed properly, can disturb the clean water relationship between soil and water. If we understand the relationship between soil and water we can derive several principles or fundamental truths about how sediment and erosion behave.materials relative to their effects on erosion control and pdf establish ment on a variety of different soil types, slope gradients and cut and fill sections.
Swanson et al (5)presents the results of the first study on a roadside cut section relative to erosion control under simulated rainstorms.Aug 19, · Purchase Soil Erosion, Volume 10 - 1st Edition. Print Book & E-Book.
ISBNBook Edition: 1.Soil Erosion and Conservation provides a comprehensive treatment of ebook processes of ebook erosion, the methods that can be used for their control, and the issues involved in designing and implementing soil conservation programmes. Features of the third edition of this internationally recognised textbook include: New material on gully erosion, tillage practices, erosion risk assessment, use of /5(3).