Wednesday, November 2, 2011

L2 Natural Landscapes - Vegetation and Soil

Explain the vegetation and soil processes in the Amazon Basin.

11 comments:

lovey said...

The vegetation processes involves plant competing for light, because most plants rely on light to give them energy to grow. However, many trees in the Amazon rainforest receive less sunlight. Furthermore, the Emergent the largest and the tallest tree in the Amazon rainforest is like a huge umbrella gets the most sunlight than any other trees in the Amazon rainforest. The Emergent tree can grow up to 50metres at its maximum height whereas the Canopy tree the second largest tree can grow up to 30metres at its maximum heights.


TO BE CONTINUED.

Totarian said...

Long ago, the pacific plate sub ducted under the extreme pressure when it collided with the South American plate, this caused the creation of the Andes Mountains(they got larger from eruptions as time passed) and in turn erosion and erosive material was carried down the mountains by rainwater and over time this eroded the land near the mountains and then the amazon basin was born. The pacific plate sub ducted under the extreme pressure when it collided with the South American plate.
The amazon basin's soil and vegetation constantly undergoes processes which directly reflect on the rainfall and temperatures in the forest. Trees are constantly competing for sunlight which has resulted in the forest having layers of trees (e.g. shrubs, canopy, and emergence) which in turn intercepts rainfall.

the emergence are trees that can grow up to 50m in height, the canopy’s a layer of trees just under it that can grow up to 30-40m and even below that are the shrubs. These trees are home to many species of animals, dead branches and dead leaves constantly fall to the forest floor along with dead animals. Basically organic material which creates a nice nutritious layer for the soil to absorb, this is called the humus layer and it helps trees grow fast and tall, most of the time this nutrition is leached all the way down underground and out of reach for trees to use; this is caused by excessive water/rainfall and river water that can sometimes overflow.
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lisa-renee said...

Vegetation and soil in the amazon rainforest depend on temperature levels and the amount of rainfall. Plants in the euphotic zone absorb the best sunlight as it directly shines over them the smaller plants in the oligophic zone absorb the reflected light that cuts through gaps in the euphotic zone. When the rainforest is felled the soil is exposed to high temperatures of sunlight, the humus layer cannot be formed with no litter and is therefore destroyed and not able to form.

Ma'ata said...

The nature of vegetation and soil in the Amazon Basin directly reflects the nature of temperatures and rainfall. Competition for light has resulted in stratified rainforests which in turn intercept rainfall, the first in a series of steps causing moisture are further reflected in the nature of the soil under the rainforest.

charlee said...

The competition for light and stratification means in the Amazon Basin the longest trees called the Emergence trees grow up to 40 metres. They are the longest, tallest trees and they are like big umbrellas with wide branches and leaves that stretch across from one another. It also means that they are competing for light. The little trees under or down bottom of the Emergence trees get left over sun shining through the huge umbrellas of the leaves. This is part of vegetation and part of the Amazon lifestyle.
Moisture dispersal in the rainforest is about steps that occur when it rains on the trees in the Amazon Basin. Firstly water is stored in foliage and on branches. Secondly the water starts flowing down the trunk. Thirdly the water starts dripping from leaves and branches to the ground. Fourthly the water then gets soaked up by the humus layer. Fifthly the water is held by roots. Lastly the infiltration is when the water is seeping through the soil.
Soil structure is, what happens to the rainfall and dead things that fall on the ground and creates the humus layer, and then leaching occurs when the minerals go down beneath the earth. The direct and deflection rainfall falls down or rains down on the trees then drops or drips on the ground. Some dead things could be falling branches, dead animals and falling leaves etc. This creates the humus layer. Following this step, leaching occurs. This is the removal of minerals in the soil by the downward percolation of water.

Samantha said...

The vegetation and soil in the Amazon Rainforest are dependent on the temperature and rainfall. The trees are competitive to one another to absorb the most sunlight that reflects on them. Trees such as the emergent can grow up 50metres high (within the euphotic zone) and are then able to be exposed to more sunlight that directly shines on them; giving them more of an opportunity to grow than the trees shaded out, down below (in the oligophic zone) which gets exposed to the left over sunlight that shines through the gaps. These trees are only able to grow up to 10metres high due to less sunlight.
The soil in the Amazon Basin is formed by the input of fallen branches, leaves, dead animals and direct, deflected rainfall. These materials create the humus layer at the surface of the Amazon Rainforest. The downward percolation of water causes leaching of the soil, removing minerals – this is known as the output of the process of soil.

necy said...

My chosen nz landscape is mount Egmont the earth crust is in the process of being destroyed and recreating itself, plate tectonics are caused by mechanism. Earth crust is made out of variety of plates that move around and also pushed by convection current of magma in the earth mantle. The little or young Andes mountain were formed by as the dividing gondwana continent’s western region split making the south American to collide with the pacific plate causing a volcanic eruptions and mountain building . Within the Amazon Rainforest and any other land must have and should have 4 main elements to keep it alive. These are Relief, Climate, Vegetation and Soil. The Amazon jungle is a Tropical rainforest. It is located near the equator which makes it a very humid place. Vegetation is all about the plant matter and trees within Amazonia; from the tall emergent trees to the low shrubs. The Amazon basin has a very unique land shape. Johnny is the man …..

Anonymous said...
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Anonymous said...

In the Amazon rainforest, there is competition for stratification and light. Plants in the emergent layer of the tropical rainforest fall in the euphotic zone, where direct sunlight is absorbed. These trees grow at least 30m tall giving them more sunlight for growth. All other plants in the canopy, shrub and humus layers do not absorb direct sunlight and therefore fall under the oligophic zone, where they only gain reflected or transmitted light off the emergent trees. Plants in the oligophic zone range from 0 – 20m tall.
The moisture dispersal in the Amazon rainforest is a lot like the competition for sunlight. When the rain falls, water is stored in foliage and on branches of the emergent trees much similar to the euphotic zone absorbing direct sunlight, this type of dispersal is called ‘hold’. ‘Trickle’ is another type of dispersal; this is where water flows down from the trunk of the trees. Another would be ‘drip’ where the water drips from leaves and branches. Any water that reaches the humus layer is soaked up by it; this is called ‘soak’. ‘Roots’ is the type of dispersal where water is held by the roots of the trees. The last type of dispersal is ‘infiltration’ where water seeps through the soil, this is also known as leeching.
The soil structure consists of three main elements. First is the input made up of direct and deflected rainfall, falling branches and leaves and dead animals; this is what makes up the humus layer. Next is the transformation, this where decomposition takes place where the input rots or decomposes to make the soil more fertile. The last part is the output and is where leaching occurs. Leeching is not good for the soil; it is the removal of minerals in the soil by the downward percolation of water.

Anonymous said...

In the Amazon rainforest, there is competition for stratification and light. Plants in the emergent layer of the tropical rainforest fall in the euphotic zone, where direct sunlight is absorbed. These trees grow at least 30m tall giving them more sunlight for growth. All other plants in the canopy, shrub and humus layers do not absorb direct sunlight and therefore fall under the oligophic zone, where they only gain reflected or transmitted light off the emergent trees. Plants in the oligophic zone range from 0 – 20m tall.
The moisture dispersal in the Amazon rainforest is a lot like the competition for sunlight. When the rain falls, water is stored in foliage and on branches of the emergent trees much similar to the euphotic zone absorbing direct sunlight, this type of dispersal is called ‘hold’. ‘Trickle’ is another type of dispersal; this is where water flows down from the trunk of the trees. Another would be ‘drip’ where the water drips from leaves and branches. Any water that reaches the humus layer is soaked up by it; this is called ‘soak’. ‘Roots’ is the type of dispersal where water is held by the roots of the trees. The last type of dispersal is ‘infiltration’ where water seeps through the soil, this is also known as leeching.
The soil structure consists of three main elements. First is the input made up of direct and deflected rainfall, falling branches and leaves and dead animals; this is what makes up the humus layer. Next is the transformation, this where decomposition takes place where the input rots or decomposes to make the soil more fertile. The last part is the output and is where leaching occurs. Leeching is not good for the soil; it is the removal of minerals in the soil by the downward percolation of water.

necy said...

The nature of vegetation and soil in the amazon basin directly reflects the nature of temperature and rainfall. Competition for light has resulted in stratified rainforests which in turn intercept rainfall the first in a series of steps causing moisture dispersal. Emergent is one of the tallest trees that grows up to 30-40 metres, this tree get more sun and rainfall as they cover up the rest of the other trees. Temperature and moisture are further reflected in the nature of the soil under the rainforest.