Soil in barbados
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From MYP unit – factors affecting the physical Environment of Barbados – Codrington School Piers Tainsh. Soil in Barbados. What is soil?. Watch the two animations at http://whs.moodledo.co.uk/file.php/1365/Ecosytems%20and%20Soil/What%20is%20Soil.swf

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Soil in Barbados

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From MYP unit – factors affecting the physical Environment of Barbados – Codrington School

Piers Tainsh

Soil in Barbados


What is soil?

  • Watch the two animations at

  • http://whs.moodledo.co.uk/file.php/1365/Ecosytems%20and%20Soil/What%20is%20Soil.swf

  • http://www.montereyinstitute.org/courses/AP%20Environmental%20Science/course%20files/multimedia/lesson51/animations/4c_soil_profile.html

Task: Describe what soil is made from?


What is soil made of

  • made up of a mixture of

  • organic material and minerals.

  • organic matter comes from

  • dead plants

  • the minerals come from the rocks underground.

  • These rocks are called bedrock.

  • Because the plants grow on top of the soil and the rocks are found underground, soil is made up of layers.


The Soil Profile

  • There are different sections

  • O and A – the organic layers made from broken up dead material to make humus

  • B – the topsoil a mix of humus and minerals broken down by weathering of rock

  • C – weathered parent rock

  • Below this is the rock.

Task: Draw a labeled diagram of a Soil Profile


How are soils different?

  • Their texture depends on the mix of clay, silt and sand in them.


The structure of the soil


Other differences

  • pH – acid or alkali

  • Water content –

  • Nutrient level

  • Organisms in it


Is there a pattern of world Soils?


Can you see any link to this?


Or to this map of climate zones?


Longer Answer Task

  • From looking at the maps of climate, vegetation and soils, describe any patterns that you see and try and explain them


  • I notice that places with tropical soil have rainforest biomes this is because of the tropical-wet temperature levels


So What Should the Soil of Barbados be like if it was a Zonal Soil?

  • What do you notice about this soil (a tropical latasol)

  • Annotate a copy of this photo to show the A, B and C horizons


Soil in Barbados is Intrazonal

  • In this case it is not climate or vegetation that is so important in creating the type of soil it is the rock - LIMESTONE

Task:

Take a picture of a profile of Barbados soil. Import it onto a graphics package and annotate it with explanations. Upload it onto your Google map.


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