823873
Amazon Rainforest
- one ecosystem; processes, benefits for people,
impact on human activity and management.
- Effects of rainforest destruction
- Change in Bio-diversity- removal of
plants and animals
- Change in Hydrology- the water cycle is disrupted
without the trees interception and transpiration are
disrupted, water and silt pour into rivers causing
them to flood
- Change in soils. Soils are easily eroded
and rain removes nutrients from the soil
via surface-runoff and leaching. The soil
becomes infertile and there is gullying
and mud slides on steep slopes.
- Change in Climate. Transpiration is reduced and
evaporation increases. This leads to a dryer climate.
Deforestation leads to Global Warming because
trees use up carbon dioxide in the atmosphere, and
this leads to global warming
- Change in Bio-diversity- removal of
plants and animals
- Effects of rainforest destruction
- PROCESSES
- The Water Cycle in the Amazon Rainforest.
- the forest acts as a store of
water in between rainfall
events
- after a rainstorm is is said that 80% of the
rainfall is transferred back to the atmosphere by
evaporation and transpiration
- Indigenous tribes live in
the rainforest
- the forest acts as a store of
water in between rainfall
events
- Convectional Rainfall
- The Water Cycle in the Amazon Rainforest.
- Key Facts
- it is located in South America.
with countries like Brazil,
Colombia and Peru bordering it.
- it is 5.5 million square kilometres in size
- the land is mainly used for grazing
cattle and growing soya beans
- it is estimated that more than 1/3rd of all
species line the amazon rainforest.
- it is located in South America.
with countries like Brazil,
Colombia and Peru bordering it.
- How Does the economic
ativity change the ecosystem
- the removal of trees is called
deforestation this is happening
in the amazon
- the timber industry is responsible for
providing wood for paper, furniture and
hew houses. this has caused large scale
destruction as vehicles and machinery
drive through the forest
- Slash and Burn. Subsistence farmers
clear the forest by burning. after 3 or 4
years of farming the soil becomes infertile
and another patch of the forest is cleared
- Cattle ranching for beef. Grazing
animals damages the forest and
after about 10 years of overgrazing
the rain turns the land into a
semi-desert
- iron-ore mining at Carajas
in Amazonia has
destroyed the forest
- Hydro-electric
schemes like the Tucuri
dam in Brazil has led to
the destruction of the
rainforest
- the removal of trees is called
deforestation this is happening
in the amazon
Recursos multimedia adjuntos
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