Investigates the formation of soil as it reviews the work of running water, waves, wind and ice.
The loss of soil/land affects their lives in many ways:
of productive land to grow food, timber, fiber for clothing.
runoff into water bodies degrading water quality for fishing
loss of coastal land as habitat and for recreation.
loss of a future resource.
Soil is formed
by the weathering of rocks over long periods of time. Weathering is
the mechanical (physical disintegration) and chemical (decomposition)
break-up of rocks. Soil is a mixture of tiny particles of inorganic
minerals and rocks, decaying organic matter, water, and air.
While soil is technically a renewable resource, the average rate of
erosion throughout the world greatly exceeds the rate at which soil
is being formed. Erosion is caused by air and water moving weathered
material. After the material is removed from a location, it is deposited
when the air and water lose their carrying power.
So what can be done about
erosion? There are many conservation techniques used by resource
managers and landowners to combat erosion:
The importance of soil
in our everyday lives is generally not recognized by people. Because
it takes so long for soil to form, humans must find ways to conserve
soil. Students can play a role by being soil-aware and
getting involved in their local areas.
tillage farming techniques - instead of plowing and leaving the
soil exposed, the soil is disturbed as little as possible (ex.
the no-till method plants seeds and adds fertilizers and weed
killers at the same time with almost no disturbance of the soil).
bank restoration ex. stabilizing the stream slope with
terraced banks and revegetating the banks to hold the soil in
of coastal areas planting marsh grasses on areas of the
coast that have been damaged by waves.
Management Practices (BMPs) for new residential and commercial
using sediment fences, bales of hay or grassed-swales to
collect any sediment that would runoff from a construction site
into local water bodies.
sediment ordinances that developers must follow to eliminate sediment
runoff developers must implement prescribed BMPs such as
the ones stated above.
the NRCSs Earth Team, a student volunteer program.