Soil Erosion Essay

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Soil Erosion
Soil quality is one of the most basic and perhaps least understood indicators of land health. Soil supports plant growth and represents the living reservoir that buffers the flows of ...
SOIL EROSION Soil erosion is a gradual process that occurs when the actions of water, wind, and other factors eat away and wear down the land, causing the soil to deteriorate or disappear completely. Soil deterioration and low quality of water due to erosion and run off has often become a severe problem around the world. Many times the problems become so severe that the land can no longer be cultivated and is abandoned. The key to minimizing soil erosion
Soil Erosion and acid rain
Acid rain: Extra acid in the rain is formed in the air by coal fired power stations which give out sulphur dioxide and nitrogen dioxide. These gases rise ...
and saving the farm lands is the farmer himself. Ultimately, he is the one who must reduce the level at which erosion sediments are dislodged from his cropland. This program will discuss the erosion process, its effects on crops and the environment, and the Best Management Practices that can be implemented to limit or contain soil movement from the land. TYPES OF EROSION Soil erosion can be divided into two very general categories: + Geological erosion: Geological erosion occurs where
Soil Erosion: Are We Just Letting It Slip Through Our Fingers
Soil Erosion: Are We Just Letting It Slip Through Our Fingers The agriculture industry has many problems it has to deal with like bugs, rodent and diseases, but one ...
soil is in its natural environment surrounded by its natural vegetation. This has been taking place naturally for millions of years and has helped create balance in uncultivated soil that enables plant growth. A classical example of the results of geological erosion is the Grand Canyon. + and Accelerated erosion: Accelerated erosion can be caused by man's activities, such as agriculture and construction, which alter the natural state of the environment. Accelerated erosion is the type that will be covered
Soil Erosion: Are We Just Letting It Slip Through Our Fingers
Soil Erosion: Are We Just Letting It Slip Through Our Fingers The agriculture industry has many problems it has to deal with like bugs, rodent and diseases, but one problem ...
in most depth. It includes such problems as + wind erosion The action of wind on exposed sediments and friable rock formations causes erosion (abrasion) and entrainment of sediment and soil. Eolian action also forms and shapes sand dunes, yardangs (streamlined bedrock hills) and other landforms. Subsurface deposits and roots are commonly exposed by wind erosion. Wind can also reduce vegetation cover in wadis and depressions, scattering the remains of vegetation in interfluves. Stone pavements may result from the
Erosion
Erosion Streams, along with stream erosion, play important parts in the development of the land all over the world. Many important events happen from the result of erosion, including the ...
deflation (removal) of fine material from the surface leaving a residue of coarse particles. Blowouts (erosional troughs and depressions) in coastal dune complexes are important indicators of changes in wind erosion. The potential for deflation is generally increased by shoreline erosion or washovers, vegetation die-back due to soil nutrient deficiency or to animal activity, and by human actions such as recreation and construction. SIGNIFICANCE: Changes in wind-shaped surface morphology and vegetation cover that accompany desertification, drought, and aridification are
cheese
Water Degradation Based on the article: River Life Through U.S. Broadly Degraded. By William K. Stevens, Jan. 26, 93 Society has been presented with a broad ...
important gauges of environmental change in arid lands. Wind erosion also affects large areas of croplands in arid and semi-arid regions, removing topsoil, seeds and nutrients. HUMAN OR NATURAL CAUSE: Eolian erosion is a natural phenomenon, but the surfaces it acts upon may be made susceptible to active wind shaping and transport by human actions, especially those, such as cultivation and over-grazing, that result in the reduction of cover vegetation. ENVIRONMENT WHERE APPLICABLE: arid and semi-arid lands
Soil And The Enviroment
SOIL Soil Erosion The soil over North America is becoming more and more useless for agriculture purposes. A great deal of the fertile top soil has vanished leaving ...
TYPES OF MONITORING SITES: Dune fields, coastlines, desert surfaces SPATIAL SCALE: patch to landscape / mesoscale to regional METHOD OF MEASUREMENT: Field observations, aided by airphotos and field surveys. Changes in vegetation cover can be monitored using historical records, sequential maps, air photos, satellite images, and by ground survey techniques. FREQUENCY OF MEASUREMENT: Every 5-20 years LIMITATIONS OF DATA AND MONITORING: The effect of wind erosion on different rock types and landforms (with contrasted aerodynamic shapes)
Soil And The Enviroment
SOIL Soil Erosion The soil over North America is becoming more and more useless for agriculture purposes. A great deal of the fertile top soil has vanished leaving ...
varies, so that it is not easy to assess the degree of erosion of a complex landscape. APPLICATIONS TO PAST AND FUTURE: Differential erosion by wind in the past may be detected through study of buried soil horizons developed on ancient erosional surfaces, which formed during dry (wind erosion) to wet (soil formation) climatic cycles. POSSIBLE THRESHOLDS: Sediment erosion and transport takes place within a specific range of wind speeds, depending on grain size, degree of cementation and
Soil And The Enviroment
SOIL Soil Erosion The soil over North America is becoming more and more useless for agriculture purposes. A great deal of the fertile top soil has vanished leaving ...
compaction, moisture content, and vegetation cover. Differential erosion by wind in the past may be detected through study of buried soil horizons developed on ancient erosional surfaces, which formed during dry (wind erosion) to wet (soil formation) climatic cycles. + Water erosion: Raindrops can be a major problem for farmers when they strike bare soil. With an impact of up to 30 mph, rain washes out seed and splashes soil into the air. If the fields are
Natural Resource
Natural Resources As the world continues to become more and more populated, resources will begin to be in demand more often. However, because of the population growth, resources will eventually ...
on a slope the soil is splashed downhill which causes deterioration of soil structure. Soil that has been detached by raindrops is more easily moved than soil that has not been detached. Sheet erosion is caused by raindrops. Other types of erosion caused by rainfall include rill erosion and gullies. caused by rain and poor drainage. Three types of erosion are: o Sheet erosion: Sheet erosion is defined as the uniform removal of soil in thin layers
Wetlands
Soil and land managment Soil and Land Management The soil triangle is graph that helps the person determine the type of soil they ...
from sloping land. This, of course, is nearly impossible ;in reality the loose soil merely runs off with the rain. o Rill erosion: Rill erosion is the most common form of erosion. Although its effects can be easily removed by tillage, it is the most often overlooked. It occurs when soil is removed by water from little streamlets that run through land with poor surface draining. Rills can often be found in between crop rows. o Gully erosion:
Soil and land managment
Soil and Land Management The soil triangle is graph that helps the person determine the type of soil they are testing. This type of graph being a ...
Gullies are larger than rills and cannot be fixed by tillage. Gully erosion is an advanced stage of rill erosion, just as rills are often the result of sheet erosion. BRIEF DESCRIPTION: Erosion, the detachment of particles of soil and surficial sediments and rocks, occurs by hydrological (fluvial) processes of sheet erosion, rilling and gully erosion, and through mass wasting and the action of wind. Erosion, both fluvial and eolian (wind) is generally greatest in arid and semi-arid regions,
Soil And Land Managment
Soil and Land Management The soil triangle is graph that helps the person determine the type of soil they are testing. This type of graph being a triangle has ...
where soil is poorly developed and vegetation provides relatively little protection. Where land use causes soil disturbance, erosion may increase greatly above natural rates. In uplands, the rate of soil and sediment erosion approaches that of denudation (the lowering of the Earth's surface by erosional processes). In many areas, however, the storage of eroded sediment on hillslopes of lower inclination, in bottomlands, and in lakes and reservoirs, leads to rates
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