tropical rain forest - man-land relationship
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Tropical Rain Forest - Man-land relationship. 1 What is happening to tropical rainforests?. Rainforest in Temburong, Brunei. Luxuriant growth of p lant s?. (Credit: Ng Kim Hung). What are your impressions about a tropical rainforest?. Rich diversity of plant and animal species?. - PowerPoint PPT PresentationTRANSCRIPT
© Oxford University Press 2009
Tropical Rain Forest -Tropical Rain Forest -Man-land relationshipMan-land relationshipTropical Rain Forest -Tropical Rain Forest -Man-land relationshipMan-land relationship
© Oxford University Press 2009
1 What is happening1 What is happening to tropical to tropical rainforests?rainforests?
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What are your impressions about a tropical rainforest?
Luxuriant growth of plants?
Rainforest in Temburong, Brunei(Credit: Ng Kim Hung)
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Rich diversity of plant and animal
species?
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Or the deforested scenes of
rainforests?
Destroyed Amazon rainforest
Where are the tropical rainforests?
(Credit: Reuters/OTHK)
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Where are tropical rainforests?
Where can we find tropical
rainforests?
Where can we find tropical
rainforests?
Tropical rainforests can be found between the Tropic of Cancer and the Tropic of Capricorn.
Where can we find the largest area of tropical
rainforests in the world?
Where can we find the largest area of tropical
rainforests in the world?
Tropical rainforests are found mainly around the Equator and the area between latitudes 10o N and S.
These regions usually have high temperature, rainfall and humidity.
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Where are tropical rainforests?
Where can we find tropical
rainforests?
Where can we find tropical
rainforests?
Tropical rainforests can be found between the Tropic of Cancer and the Tropic of Capricorn.
Where can we find the largest area of tropical
rainforests in the world?
Where can we find the largest area of tropical
rainforests in the world?
The largest area of tropical rainforests in the world is in the Amazon Basin in South America.
Congo BasinSouth-east Asia
AmazonBasin
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What has happened to tropical rainforests?
The change in the Brazilian Amazon rainforest cover (1990–2006)
The rainforests in the Brazilian Amazon has been losing at a rapid rate.
What has happened to the tropical
rainforests in the Brazilian Amazon?
What has happened to the tropical
rainforests in the Brazilian Amazon?
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How can we identify the phenomenon from satellite images?
Satellite image of Brazilian Amazon in 1975
1975197519861986
Satellite image of Brazilian Amazon in 1986
Deforestation carried out along roads, developing ‘fish-skeleton’ patterns
Undisturbed forest
19921992
Satellite image of Brazilian Amazon in 1992
(Credit: NASA)
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How can we identify the phenomenon from satellite images?
19921992(Credit: NASA)
What changes had been
taken place in the rainforest
cover?
What changes had been
taken place in the rainforest
cover?
The rainforest cover in the Brazilian Amazon had been shrinking between 1975 and 1992.
Roads were built into the rainforest, where forests were cleared along them.
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How about the situation in other rainforests in other parts of the world?
Changes in tropical rainforest cover throughout the world
Source: Washington DC: Global Forest Watch
Congo Basin: relatively slower rate, but still significant
South-east Asia: most seriously deforested
Amazon Basin: deforested in an alarming rate
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What has happened to tropical rainforests?
Are tropical rainforests
disappearing rapidly?
Are tropical rainforests
disappearing rapidly?
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What has happened to tropical rainforests?
Do you know?Do you know?
423290 8.14 56.10
69210 4.92 56.98
280720 24.08 46.46
14140 2.02 53.49
7110 1.16 53.32
40550 6.46 53.47
20860 6.62 63.60
8540 6.24 14.98
47780 6.92 32.80
2550 1.12 65.70
The Amazon Basin holds about 1/3 of the worlds’ rainforests.
Another 20% are located in Indonesia and the Congo Basin.
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What has happened to tropical rainforests?
Each second: About 1 hectare of rainforest disappears (= the area of 1 Hong Kong Stadium)
Each minute: About 60 hectares of rainforest disappears (= the area of 60 Hong Kong Stadium)
Each day: About 86 000 hectare of rainforest disappears (about 0.8 times of Hong Kong’s total area)
Each year: About 31 million hectare of rainforest disappears (about 282 times of Hong Kong’s total area)
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What has happened to tropical rainforests?
More than 2/3 of the world’s tropical rainforests are damaged by human activities.
Deforestation refers to human extraction of resources by cutting trees down. The scale?
Tropical rainforests once covered about 12% of the Earth’s land surface but now they are reduced to 5% today.
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Why do people remove the rainforests?
Why do people remove the rainforests?
How should rainforest resources
be managed and conserved?
How should rainforest resources
be managed and conserved?
What can we do to help protect and sustain tropical
rainforests?
What can we do to help protect and sustain tropical
rainforests?
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