Erosion Endangers Shore Home

Natural forces such as wind, rain, and temperature cycles continually erode the land. This Chesapeake Bay home was built on a cliff that has undergone severe erosion. Many people battle erosion by planting grass and trees to form a strong root system or laying down netting to keep rock and soil from washing away.

　

　

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4. 4) Crop management

1. a) Maintaining cover at critical times of year
2. b) Rotation
3. c) Cover crops

1. 5) Slope runoff control                                                                  

1. a) Terracing

b) Deep tillage and application of humus

2. c) Transverse hillside ditches to interrupt
3. d) Contour ploughing
4. e) Preservation of vegetation strips to limit field width

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Tillage      Land is prepared for cultivation by a process called tillage. During this process, plows break up the surface layer of soil in order to circulate air and moisture, prepare a good bed for seeds, and remove undesirable weeds and excess vegetation. Plowing is usually done in patterns that follow the contour of the land, an agricultural technique called contour farming. These patterns and lines evident well into the growth of the crop are made horizontal to the slope, or contour, of the land, which minimizes water runoff. When used in conjunction with the construction of ditches and terraces, contour farming can be a very effective method of soil conservation control.

　

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3. 6) Prevention of erosion from point sources like roads, feedlots

1. a) Intelligent geomorphic location
2. b) Channelling of drainage water to non-susceptible areas

1. 7) Suppression of wind erosion

1. Soil moisture preservation
2. Increase in surface roughness through ploughing up clods or planting of windbreaks.

                                           

　

                                                                                   Land pollution