Review the three major types of soil degradation occurring in the environment. Briefly explain how each type of damage occurs.
Soil ErosionWater, wind, and people.
(Miller,2005 p.279) ●Soil erosion has two major harmful effects. One is loss of soil fertility through depletion of plant nutrients
in topsoil. The other harmful effect occurs when eroded soil ends up as sediment in nearby surface waters, where it can pollute water, kill fish and shellfish,
and clog irrigation ditches, boat channels, reservoirs,
and lakes. (Miller,2005 p.279) ●Polyvarietal
cultivation, intercropping, terracing,
Polyculture. Contour planting and strip cropping, windbreaks, and Alley cropping.
of natural climate change that causes prolonged
drought and human activities that reduce or degrade topsoil. (Miller,2005 p.281)
●We can also restore land suffering from desertification by planting trees and grasses that anchor
soil and hold water. (Miller,2005 p.282)
Salinization●Repeated annual applications of irrigation water lead to the gradual accumulation of salts in the upper
●It stunts crop growth, lowers crop yields, and eventually kills plants and ruins the land. (Miller,2005 p.283)
Switch to salttolerant
(such as barley,
cotton, sugar beet). Flushing soil
Not growing crops
for 25 years
Choose one form of soil degradationsoil erosion, desertification, or salinizationfrom the matrix. Then, write a 200-300 word response describing ways in which your lifestyle directly or indirectly contributes to...