Different soil types develop in different climates

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					Different soil types develop
    in different climates.




                Image: T. Loynachan
                                      Soils-4-1
  Prairie soils have a dark surface
layer (horizon), are rich in minerals,
 and form in grasslands widespread
   across Earth’s middle latitudes.




Images: NRCS
                                         Soils-4-2
 Forest soils have a light gray upper
 horizon, a horizon rich in aluminum
  and/or iron, and form in warm to
cool humid regions where coniferous
             forests grow.




                                         Image: Soil Classifiers of Michigan




                   Image: Bruce Molnia                                  Soils-4-3
 Tropical soils are reddish and iron-
oxide rich, depleted in nutrients, and
  form in humid and warm regions.




 Images: National Cooperative Soil Survey, University of Nebraska   Soils-4-4
       Organic soils are dark colored, rich in
       decomposed organic matter, and form
         in poorly drained lowlands such as
               swamps and wetlands.




Images: Bruce Molnia, Soil Classifiers of Michigan
                                                     Soils-4-5
Desert soils form in arid settings and
   are commonly rich in calcium
              carbonate.




     Images: Martin Miller, NRCS
                                         Soils-4-6
                Tundra soils form in Arctic
          environments, have a dark organic-rich
           upper layer, and a mineral rich layer
                   over frozen ground.




Images: Travis Hudson, Alaska/Yukon Society of Professional Soil Scientists   Soils-4-7
Different soil types develop
    in different climates.




         Image: Image: T. Loynachan

                                      Soils-4-8

				
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