Roosevelts Soil Erosion Soil Conservation Soil Conservation Soil Salinity Soil Essay Environmental conservation Essay example

1. Roosevelt's Soil Erosion
In his first 100 days in office, Roosevelt addressed soil conservation, the key to turning around the
Dust Bowl conditions, by creating the Civilian Conservation Corps (CCC) and the Soil Erosion
Service. The establishment of the Soil Erosion Service was the first major federal commitment to
the preservation of privately owned natural resources. In 1935, Roosevelt started the Prairie States
Forestry Project to plant nearly 220 million trees, a project undertaken by the U.S. Forestry Service,
the CCC, the new Works Progress Administration (WPA) and local farmers. The seven
–year project
created over 18,000 miles of windbreaks on 30,000 farms, a so–called "shelter belt" from the Texas
Panhandle to Canada. These agencies and this response were a
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2. Soil Conservation
Soil, which is one of the most important natural resources, is often less heeded. The importance of
soil conservation is relatively less talked about as compared to the conservation of water and other
natural resources. The almost–omnipresent soil is mostly taken for granted. Its omnipresence is
ironically the reason behind us, human beings, taking it for a ride. We rarely even think of it as a
natural resource that needs to be conserved, a part of the natural wealth that needs to be preserved.
The concept of the conservation of soil takes into account, the strategies for preventing the soil from
getting eroded and preventing it from losing its fertility due to an adverse alteration in its chemical
composition. Here are some ways to...show more content...
Salinity of soil is detrimental to the vegetative life in the soil. The death of vegetation is bound to
cause soil erosion. Hence, salinity management is one of the indirect ways to conserve soil.
Soil organisms: Organisms like earthworms and others benefiting the soil should be promoted.
Earthworms, through aeration of soil, enhance the availability of macronutrients in soil. They also
enhance the porosity of soil. The helpful organisms of soil promote its fertility and form an element
in the conservation of soil.
Indigenous Crops: Planting of native crops is known to be beneficial for soil conservation. If
non–native plants are grown, the fields should be bordered by indigenous crops to prevent soil
erosion and achieve soil
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3. Soil Conservation
INTRODUCTION
Soil is the precious gift of nature to the mankind. All the plant family, animal kingdom and human
society at large depend upon soil for their sustenance directly or indirectly. Ironically, soil is the most
neglected commodity on the earth. Shifting cultivation on the hill slopes, non–adoption of soil
conservation techniques, and over exploitation of land for crop production due to population stress,
leads to enormous soil erosion. It will take hundreds of years to form an inch of soil, but in no time
it gets washed away down the slope due to erosion.
SOIL CONSERVATION
Soil Conservation is the process by which the loss of soil is checked, reducing the velocity of
run–off through erosion control measures for maximum...show more content...
A terrace reduces the length of the hill side slope, thereby reducing sheet and rill erosion and
prevents formation of gullies.
There are different types of terraces as follows:
вњ“ Bench terracing: It consists of transforming relatively steeps land into a series of level or
nearly level strips or steeps running across the slope. The soil materials that are excavated from the
upper part of the terrace is used in filling the lower part and a small bund is also raised along the
outer edge of the terrace to check the downward flow of rainwater and also soil erosion. вњ“
Channel terrace: It consists of making of wide but shallow channels across the slope of the land
either exactly on contour line or with a slight grade (0.1 to 0.2 per cent). In this process, the
excavated soil is placed along the lower edge of the channel in the form of low ridge. вњ“ Narrow
based terrace: It consists of making a number of narrow based ridges or bunds at a distance of 1m to
2m across the slope of the land at suitable intervals in high rainfall areas. вњ“ Broad based ridge
terrace: It consists of making wide but low bunds on the contour lines by excavating soils from
both sides of terrace. This is practiced in areas where the rainfall is relatively low. вњ“ Contour
trenching: It consist of making a series of deep pit (i.e. 2ft. wide and 1ft. deep) or trenches across
the slope at convenient distance. The soil excavated from the
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4. Soil Salinity
Soil salinity Soil salinity is the salt content in the soil; the process of increasing the salt content is
known as salination. Salt is a natural element of soils and water. Salination can be caused by
natural processes such as mineral weathering or the gradual withdrawal of an ocean. It can also be
caused by artificial processes such as irrigation.
|Contents |
|1 Causes of soil salinity |
|2 Natural occurrence |
|3 Dry land salinity |
|4 Salinity due to irrigation |
|5 Consequences of salinity |
|6 Regions affected...show more content...
This is the case, for example, in large parts of Australia. Human practices can increase the salinity of
soils by the addition of salts in irrigation water. Proper irrigation management can prevent salt
accumulation by providing adequate drainage water to leach added salts from the soil. Disrupting
drainage patterns that provide leaching can also result in salt accumulations. An example of this
occurred in Egypt in 1970 when the Aswan High Dam was built. The change in the level of ground
water before the construction had enabled soil erosion, which led to high concentration of salts in
the water table. After the construction, the continuous high level of the water table led to the
salination of the arable land.
Dry land salinity
Salinity in drylands can occur when the water table is between two to three metres from the
surface of the soil. The salts from the groundwater are raised by capillary action to the surface of
the soil. This occurs when groundwater is saline (which is true in many areas), and is favored by
land use practices allowing more rainwater to enter the aquifer than it could accommodate. For
example, the clearing of trees for agriculture is a major reason for dryland salinity in some areas,
since deep rooting of trees has been replaced by shallow rooting of annual crops.
Consequences of salinity
The consequences of salinity are detrimental effects on plant growth and yield damage to
infrastructure (roads, bricks, corrosion
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5. Soil Essay
University of Phoenix Material
Soil and Glaciers Worksheet
From Visualizing Earth Science, by Merali, Z., and Skinner, B. J, 2009, Hoboken, NJ: Wiley.
Copyright 2009 by Wiley. Adapted with permission.
Part 1
Size grades of soil are named sand, silt, and clay, which includes colloids. Size grades are defined
using the metric system. Use Figure 4.8 from the textbook to fill in the following chart. Specify the
type and size and description of the particle. In some cases, particle size will be less than some
value or greater than another value. For instance, gravel is greater than 2.0 mm.
|Name |Size |Description |...show more content...
Describe why these factors are important in the formation of soil.
|Soil forming factor |Importance in soil formation |
|Parent material |Direct impact soil chemisty and fertility rich in solube ions– calcium, magnesium
potassium|
| |and sodium. |
|Climate |Precioitation, temperature. Warmer temperature speed up the formation of soil. Cooler |
| |temperature less precipitation slow down soil formation. |
|Living organisms |Plants animals and micro organism all affect soil formation by producing or
contributing to|
| |humus production. |
|Topography |water to soak into the regolith |
| |important topographic variable connected with soil is the slope of the land surface |
|Time |longer soil–forming processes, mature soil, |
| | it takes thousands of years
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6. Environmental conservation Essay example
An Environmental Conservationist, which is also known as a conservation scientist, is an
excellent job for anyone who loves nature and wants to preserve all of earth's natural wonders. As
a conservationist you need to, "Find your own ways to make less trash, and help others to learn
how to reduce, reuse, and recycle." (EPA). The job is a hands–on job which means "spending a
major portion of the workday outdoors without regard to weather." (Easton 35) Though this doesn't
seem like a scientific job to most people it is because it involves calculating the outcome of certain
things on the environment.
The purpose of this career is to protect the environment and the people and wildlife that live in it. The
...show more content...
Environmental Conservation is labeled as a field that is hazardous, because as an Environmental
conservationist, you are " working with infectious materials, or where accidents are common."
(Easton 35) To perform this job, you need a lot of initiative because you need to determine what
needs to be done and often it can be a life or death situation for people and/or animals.
It is easy to get burned out in this career, due to "enduring long–term stress and strain." (Easton 35)
This is not a job people can have for a short time. This a career that people commit their whole lives
to.
Berry 3
People with degrees in this field can be employed by local, state or federal governments. It is also
likely to be hired by an organization such as the EPA( the
Environmental Protection Agency). Through 2010, "Growth will be strongest in state and local
government thanks to efforts to protect the environment. Growth will probably be less at the federal
level, despite growing need in areas of soil and water conservation." (Easton 89–90)
It is estimated that "2,200 new jobs (will be established) between 2000–2010." (Easton 36) The
federal government currently employs most of those in his field. There are agencies set up and
people are hired by these agencies which are branches of the federal
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