does not “sit” in one
location; use organic
or salt-free fertilizer;
add humus to the soil;
plant vegetation in
coastal areas that
would help block
water surges from
storms and tsunamis.evaporation basins.Methods that can decrease soil erosion include: ■ Adopting agricultural
practices, such as alley cropping, terracing, contour farming, or intercropping.
■ Adopting land classification rules.
■ Applying mulch to land that is in danger of eroding to reduce water
runoff.
■ Allowing time for grasslands to recover after livestock grazing.
■ Leveling land where practical so that water does not run off fields, taking
the soil with it.
■ Planting cover crops or native grasses on land that needs to be fallow for a
growing season. (Cover crops would not require the same soil nutrients as
the crop to be planted.) ■ Planting trees to form windbreaks
(shelterbelts), which can reduce wind erosion.
■ Using irrigation methods, suitable to the area, that reduce water runoff.
■ Using information from the National Cooperative Soil Survey (NCSS) to
make decisions on which easily erodible marginal lands not to plant on.CASE STUDY
DUST BOWL: The Dust Bowl occurred during the 1930s in Oklahoma,
Texas, and Kansas. It was caused by plowing the prairies and resulted in the
loss of natural grasses that rooted the soil. Drought and winds that occurred
blew most of the topsoil away, causing people to leave the area.Landslides and Mudslides