Hi I have four small questions here about deforestation?
1 How much forest area is cut down each year
2 What impact does deforestation have on the greenhouse effect (both direct and indirect in statistic form please)
3 How much damage globally does flooding cause ( in figures again please i.e 5 billion dollars and 900 people)
4 What damage do landslides cause
Answers:
The exact rate at which rainforests are presently being destroyed is not known, as there have been no global assessments since 1990. At that time, an area of about 150.000 sq. Km of tropical rainforest, equivalent to the size of Great and Wales, was being destroyed every year. A similar area of forest was also being damaged or degraded. On average, the rate of destruction has increased during the last few years because of very extensive deliberate destruction of forests in Brazil and Indonesia.
The earth's forests are under pressure. Tropical forests are fast disappearing due mainly to logging, mining, hydropower and the hunger for land. Temperate and northern old-growth forests are being destroyed by the timber and paper industries. Not only is the livelihood of native peoples of the forest being undermined, every year thousands of plant and animal species disappear forever.
The Atlantic Forest in Brazil is a unique rainforest that once covered more than a million square kilometers, extending from Recife southward through Rio de Janeiro to Florianópolis and westward into Paraguay. Today, the forest is reduced to less than 5 percent of its original size, and is located mostly in steep mountainous regions.
Deforestation of the Atlantic Forest comes from coastal development, as well as uncontrolled logging and agriculture and charcoal production.
Some areas of rainforest are rich in precious metals such as gold and silver. Large deposits of aluminum, iron ore, copper and zinc are also found. Infrastructure development and the influx of miners into any area of pristine rainforest inevitably results in deforestation. Mercury (used in gold mining) contamination is common.
Governments and corporations tend to blame rainforest destruction on the actions of subsistence farmers and settlers. However, in countries such as Brazil , government schemes have deliberately encouraged the colonization of rainforests, and throughout the tropics small-scale farmers have been forced off their own lands and into poorer forest areas by large agricultural companies.
Many things that we buy contribute to rainforest loss. Tropical hard woods such as mahogany, sapele or meranti are obvious examples. Tropical fruit plantations are often located in areas that were once tropical rainforests. Some companies are still involved in large industrial projects which help destroy rainforest.
Read this
http://earthobservatory.nasa.gov/library.
If this is for a class, don't forget the beneficial aspects of deforestation.
1. New houses to replace old, unsafe construction.
2. Renewable supply of houses means that more poor and working class people have decent places to live.
3. Clearing of area reduces population overcrowding, and if done properly protects people from fire.
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2 What impact does deforestation have on the greenhouse effect (both direct and indirect in statistic form please)
3 How much damage globally does flooding cause ( in figures again please i.e 5 billion dollars and 900 people)
4 What damage do landslides cause
Answers:
The exact rate at which rainforests are presently being destroyed is not known, as there have been no global assessments since 1990. At that time, an area of about 150.000 sq. Km of tropical rainforest, equivalent to the size of Great and Wales, was being destroyed every year. A similar area of forest was also being damaged or degraded. On average, the rate of destruction has increased during the last few years because of very extensive deliberate destruction of forests in Brazil and Indonesia.
The earth's forests are under pressure. Tropical forests are fast disappearing due mainly to logging, mining, hydropower and the hunger for land. Temperate and northern old-growth forests are being destroyed by the timber and paper industries. Not only is the livelihood of native peoples of the forest being undermined, every year thousands of plant and animal species disappear forever.
The Atlantic Forest in Brazil is a unique rainforest that once covered more than a million square kilometers, extending from Recife southward through Rio de Janeiro to Florianópolis and westward into Paraguay. Today, the forest is reduced to less than 5 percent of its original size, and is located mostly in steep mountainous regions.
Deforestation of the Atlantic Forest comes from coastal development, as well as uncontrolled logging and agriculture and charcoal production.
Some areas of rainforest are rich in precious metals such as gold and silver. Large deposits of aluminum, iron ore, copper and zinc are also found. Infrastructure development and the influx of miners into any area of pristine rainforest inevitably results in deforestation. Mercury (used in gold mining) contamination is common.
Governments and corporations tend to blame rainforest destruction on the actions of subsistence farmers and settlers. However, in countries such as Brazil , government schemes have deliberately encouraged the colonization of rainforests, and throughout the tropics small-scale farmers have been forced off their own lands and into poorer forest areas by large agricultural companies.
Many things that we buy contribute to rainforest loss. Tropical hard woods such as mahogany, sapele or meranti are obvious examples. Tropical fruit plantations are often located in areas that were once tropical rainforests. Some companies are still involved in large industrial projects which help destroy rainforest.
Read this
http://earthobservatory.nasa.gov/library.
If this is for a class, don't forget the beneficial aspects of deforestation.
1. New houses to replace old, unsafe construction.
2. Renewable supply of houses means that more poor and working class people have decent places to live.
3. Clearing of area reduces population overcrowding, and if done properly protects people from fire.
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