geopractice

13 cards·by tristoneasymoney

Oxisols

(tropical soils): Distinctive horizon with a mixture of iron and aluminum oxides. Heavy precipitation leaches minerals from the A horizon (l

Aridisols

(desert soils): The largest soil order, 19% of the earth Lack organic matter of any significance Occur in areas of high potential

Mollisols

(grassland soils): most important agricultural soils Characteristics dark, organic surface layer~ 25cm thick Soft soils that is ri

Alfisols

(moderately weathered forest soils): The most widespread of the soil orders Pale, grayish brown to red; fertile Productivity depend

Ultisols

(highly weathered forest soils): Tend to be reddish because of iron in them Less fertile soil and can be easily harmed by cultivati

Spodosols

(northern coniferous forest soils) Form from sandy parent material in spruce, fir, and pine forests An ashen grey color is common

Podzolization-

a process of solid acidification in cool forests

Entisols

(recent, undeveloped soils) forming from weathered shale in death valley; lacks horizon

Inceptisols

(weakly developed soils) usually form from glacial till and outwash, and on floodplains

Gelisols

(cold and frozen soils) form in tundra at high latitude and elevation

Andisols

(volcanic soils) planted with sugar cane in Hawaii

Vertisols

(expandable clay soils) frequently form under grasslands and savannas (wet/dry seasons)

Histosols

(organic soils) form in peat bogs and wetlands