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Odblog

A weblog designed to share Geography resources with students and colleagues

Saturday, April 25, 2009

Biosphere assessment work

Categories: Biosphere
This is a group exercise. The class were given post its and had to organise themselves around one of the three soil profiles we are studying. Students were then split again into smaller groups, and using the post its as a strating point, had to construct a profile from blank and then explain it. Please feel free to give feedback, I'll be doing this too.













22 Comments:

At 11:19 am, Anonymous Anonymous said...

more could be commented on the uses of the soil forming factors.

 
At 12:27 pm, Anonymous Anonymous said...

Few talked about evapouration exceeding precipation or vice versa

Not a lot of people talked about deconposition in the soils

 
At 12:31 pm, Anonymous Anonymous said...

The first soil profile could include more on the relief and how this affects the formation

 
At 12:34 pm, Anonymous Anonymous said...

Video #2

Didnt mention anything about the C horizon. Therefore didn't mention that the parent material remains relatively unaltered within podzol soils, and that it is acid rocks such as granite and schists that give the soil its characteristics.

Could also have mentioned that the horizons are very clearly defined due to a lack of organisms, mainly because of the cold climate, and therefore no mixing.

- Professor David McDaid

 
At 12:34 pm, Anonymous Anonymous said...

The second last soil profile could mention more about the relief in its formation

 
At 12:38 pm, Anonymous Anonymous said...

more explination on the uses of different soils.

 
At 12:39 pm, Anonymous Anonymous said...

The second Gley soil profile could include more on soil formation factors, like the relief and also mention about the anaerobic conditions

 
At 12:39 pm, Anonymous Anonymous said...

more could be mentioned about the parent material (c) and how the texture is varied.

 
At 12:40 pm, Anonymous Anonymous said...

how soils form from climate to organisms ?

 
At 12:41 pm, Anonymous Anonymous said...

more description on acidic and alkaline quality of the various types of soil.

 
At 12:42 pm, Anonymous Anonymous said...

The first podzol profile could include more on soil formation factors, like the relief, and mention more about the horizons and the organisms present

 
At 12:42 pm, Anonymous Anonymous said...

the type of humus in which the topsoil is enriched.

 
At 12:42 pm, Anonymous Anonymous said...

All the videos are detailed answers but they could use a bit more work on parent materials and factors such as climate and weathering.

 
At 12:43 pm, Anonymous Anonymous said...

The Diagrams for the last video, 'Brown Earth' is exceptional. Also, the facts and explainations are accurate and well presented, although the parent material could be focused on more such as dealing with texture, formation and breakdown.

 
At 12:43 pm, Anonymous Anonymous said...

named examples of plants and organisms found in each types of soils ???

 
At 12:43 pm, Anonymous Anonymous said...

Video #1

Didnt mention that the parent material can be frozen permanently, or for majority of the year, which prevents free drainage.

- Mater Chief David McDaid

 
At 12:43 pm, Anonymous Anonymous said...

Podzols video 3 could mention the acidic mor humus.

 
At 12:46 pm, Anonymous Anonymous said...

More could be spoken about the drainage for example illuviation and eluviation. Some more needed about decomposing leaf litter.

 
At 12:47 pm, Anonymous Anonymous said...

In the third soil profile relief should be mentioned in the soil formation factors, as it plays an important part as they are generally steep. Climate should also be mentioned

 
At 12:47 pm, Anonymous Anonymous said...

Some of the videos could have went into a bit more detail....

 
At 12:47 pm, Anonymous Anonymous said...

coniferous or deciduous trees are not mentioned enough.

 
At 12:48 pm, Anonymous m n Ry said...

on the first video (gley soils) you could also write about:

-the lack of oxygen in pore space (anaerobic conditions)
-chemical reduction occurs prior to translocation
-where gleying is intermittent. orange/yellow coloured mottling can occur
-horizons generally rich in organic matter intergrading into peat deposites.

 

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