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
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
Convectional Rainfall
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.
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