Soil experts say more than half of the nation's 280 million planted acreage is considered highly erodible, especially lands that are hilly or sloping.
32.
The program pays land owners about $ 50 an acre a year to keep highly erodible land out of production and convert it to cover for wildlife.
33.
The program's original purpose was to take fragile, highly erodible land out of production at a time when government stocks of grain were soaring.
34.
Material from the highly erodible Southern Alps is removed via weathering; then carried across the Canterbury Plains by various braided rivers to the east coast beaches.
35.
Windbreaks or " wind fences " are used to reduce wind speeds over erodible areas such as open fields, industrial stockpiles, and dusty industrial operations.
36.
Most orthents are found in very steep, mountainous regions where erodible material is so rapidly removed by erosion that a permanent covering of deep soil cannot establish itself.
37.
The first was the flow of water under highly erodible and unprotected fill, through joints in unsealed rock beneath the grout cap, and development of an erosion tunnel.
38.
The volcano has never grown very large between eruptions, because it produces mostly unwelded, easily erodible deposits, and periodically destroys the viscous domes that fill its vents.
39.
Bedrock rivers typically flow in either a fractal pattern, or a pattern that is determined by weaknesses in the bedrock, such as fractures, or more erodible layers.
40.
Even though they re more influences blowout structures have on their morphology, both types basically tend to have deflation basins eroded until they reach their non-erodible base level.
