Deforestation

DAVID MYERSKEVIN HERNADEZ

What is DeforestationDeforestation is the destruction of natural forest to serve another purpose

Increase of human population causes more land to be destroyed

This effects the all stages of living species making some go endangered.

This also effects the tribal people that rely on the natural resources.

ExamplesHuman causes

Logging

Slash and burning

Clearing land for live stock grazing

Mining operations

Oil extraction

Dam building

Population expansion

Naturally occurring

Wild fires burn a large selection of forest every year. This can be natural or accidental. Wildfire can prevent the growth of young trees.

Amazon•More than half of the world's species of plants and animals live in this rainforest.

•90% of Amazon plants used by Amazon natives have not been studied.

•In 1500 there were estimated 6 to 9 million Amazon natives. By 1900 the numbers went down to 1 million. Now the population is estimated at 250,000 Amazon natives.

•Fifty or so Amazon tribes living in the rainforest that have not been contacted by the outside world.

Effects on Environment

The deforestation effects the biodiversity of the forest.

Makes all the animals move closer to civilization, causing many animals to become a nuisance which may cause some species to be pushed to the brink of extinction.

The climate and temperature. Temperature may rise

The regions sometimes get pushed to desert like.

http://www.youtube.com/watch?v=FrAkd8Ee5so

Facts about Deforestation

The total rainforest of Brazil (Atlantic coast) has been reduced by about 90-95%. If this rate of deforestation continues the same way as today, the rainforests will be completely cleared within the next 100 years.

Logging itself results in 32 million acres of natural forests destroyed every year

Forests cover about 30% of Earth's surface-but each year about 13 million hectares of forest (78,000 square miles) Nebraska, or four times the size of Costa Rica are destroyed for agricultural uses.

On an average, 60 hectares (measurement of land) of rainforest are cut down per minute, which results to 86,000 hectares destroyed per day.

Where is Deforestation occuring?

South America

Africa

Central America

Southeast Asia

United States

Nigeria

Brazil

Sources

What is deforestation http://environment.about.com/od/biodiversityconservation/f/deforestation-overview.htm

http://www.buzzle.com/articles/what-is-deforestation.html