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Published byMegan Sparks Modified over 9 years ago
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Found in tropical and subtropical regions Areas with high temps and abundant precipitation Climate causes high amounts of weathering Results Soil low in nutrients Bright red/orange color … caused by the Fe and AL oxides
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Oxisols cover 7.5% of the Earth’s ice free land surface. Primarily in the southern hemisphere Majority in South America Significant amounts of oxisols are also found in central Africa
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Oxisols are not found in the continental U.S. in any abundance. Only 0.02% of the U.S. has oxisols Most oxisols are found in Hawaii. (not the big island)
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Very fine texture. High amounts of bioturbation (lots of animal activity) Ap - shows topsoil with plowing Bo1- subsoil with organic material Bo2- subsoil with slightly different color Oxisols are used for agriculture when fertilizers are added Provide pineapple and sugarcane farming Also support grazing and pasture lands for livestock.
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Picture from Nigeria (corn field) Crops such as corn are rotated on a yearly basis Farmlands are then burned to release nutrients back into the soil After 5-10 years land Is re-established as forest
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Tropical areas with high elevation (over 1000M) contain more fertile Oxisols than lowlands. These areas are used for low impact farming of peanuts, pineapple, and bananas.
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Oxisols are found in warm wet climates They are generally infertile Highly permeable Very resistant to erosion Their color comes from insoluble Fe and Al oxides
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