Slide 1SOIL EROSION AND DEGRADATION Soil erosion lowers soil fertility and can overload nearby bodies of water with eroded sediment. Sheet erosion: surface water or wind…
Slide 1Desertification: Degrading Drylands About one-third of the world’s land has lost some of its productivity because of drought and human activities that reduce or…
Slide 1 Ch 3 and 13 Soils Part 2 Slide 2 Global Outlook: Soil Erosion Soil is eroding faster than it is forming on more than one-third of the world’s cropland. Figure 13-10…
Slide 1 Soil Erosion and Degradation Slide 2 PA Standards 4.2.12.C: Renewable and Nonrenewable Resources 4.4.10.B: Agriculture and Society “The nation that destroys its…
Case Study: Soil Erosion in the U.S. â Some Hopeful Signs Soil erodes faster than it forms on most U.S. cropland, but since 1985, has been cut by about 40%. 1985 Food Security…
SUSTAINABLE AGRICULTURE THROUGH SOIL CONSERVATION Modern farm machinery can plant crops without disturbing soil (no-till and minimum tillage. Conservation-tillage farming:…