How The Management Of The Amazon Rainforest Is Being Affected

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There are many major rainforests in the world. They are mainly located in the continents of South America, Africa and south East Asia. The Rainforests are located between the Tropic of Cancer and the Tropic of Capricorn. The rain forests are in a broken belt along the equator. The countries which the rainforests are on are Brazil, Congo, Malaysia, Thailand and Costa Rica.

         

                                                                                             This is a map to show the rainforests

                                                                                         Of the world and where they                

                                                                                             are located

        

This map shows the Amazon        

Rainforest which is located in

Brazil, South America.

The climate of the rainforest is usually hot because it is located so close to the equator, and there are no seasons. As the graph shows the maximum temperature is 27 C, and this occurs in the months of April, May, June, July, September, October, November and December because these are usually the summer months. During the rest of the year the temperature is pretty much the same. The minimum temperature in the rainforest is 25 C, and this occurs in months of July and August. The annual range of temperature in the rainforest is 2 C. The winter months usually have the highest rainfall. The highest being 360mm and the lowest being 92mm. the annual range is 268mm. There is rainfall in all month. It is mainly convectional rain falling in the afternoon.

The hot wet climate with no seasons causes a dense forest. This is why the rainforests structure has four main layers. The four layers are all different to one another. The top layer known as the emergent layer is the tallest layer and the trees here can reach 45m + in height. This is because they receive the most amount of light and nutrients which allows them to grow bigger than the trees on the other layers. The second layer known as the canopys also consists of tall trees but are not as tall as the trees on the emergent layer. The trees on the canopy’s can reach 35 – 45 m in height.  There are animals and plants on this layer because it is where all the food grows. The third layer known as the under canopy this consists of trees about 30m in height. The forth and lowest layer is known as the shrub layer. This layer is very dark and consists of a few small plants as it receives hardly any light because of the three other layers. In order to survive in these conditions plants have special adaptations. Other features of the rainforest are buttress roots, epiphytes and drip tips. Buttress roots are huge roots which are found above the soil because it is the only place to receive nutrients; these roots are normally found on emergent trees. The roots also help to hold the trees up in strong winds. Epiphytes are flowering plants which grow on the branches of emergent trees to get sunlight, and they also have aerial roots which hang to absorb moisture from the air. Drip tips are leaves which have tips at the end of them and holes in them. They have these unusual features so that water can not be collected in the leaves causing them to rot and eventually kill the tree since it would not be able to photosynthesise

There are three main cycles in the rainforest which help to maintain the ecosystem. These cycles are the water cycle, the nutrient cycle and the carbon cycle. These cycles can be easily destroyed by the cutting down of the trees.

Nutrient Cycle 

This cycle starts off by twigs and leaves

Falling from the trees to the forest floor which then

Becomes litter. These twigs and leaves then provide food

for all the bacteria, fungi and termites which live on the

forest floor. The animal’s droppings then provide nutrients

for the soil which are absorbed by the trees in order to

help them grow.

Water Cycle 

This cycle starts off when it rains,

and when it rains some rain falls to

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the ground and some is intercepted

by the tree. Some of the water evaporates from

the leaves and branches into the

atmosphere. The rain which has not been

intercepted by the tree hits the ground and

flows along the surface into rivers. Some

water actually infiltrates into the soil and

is taken up by the tree and plant roots. Water

is then lost from the tree via the leaves during

transpiration and this water vapour rises and

it cools and condenses forming rain clouds.

The cycle then starts all over again. ...

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