Topics: Carbon dioxide, Global warming, Deforestation Pages: 5 (1380 words) Published: May 20, 2013
Deforestation - Wikipedia, the free encyclopedia

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For other uses, see Deforestation (disambiguation). Deforestation, clearance or clearing is the removal of a forest or stand of trees where the land is thereafter converted to a non-forest use.[1] Examples of deforestation include conversion of forestland to farms, ranches, or urban use. More than half of the animal and plant species in the world live in tropical forests.[2] Contents [hide] 1 Causes 2 Environmental problems 3 Economic impact 4 Forest transition theory 5 Historical causes 6 Industrial era 7 Control 8 Military context 9 See also 10 References 11 External links Satellite photograph of deforestation in progress in theTierras Bajas project in eastern Bolivia.

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The term deforestation is often misused to describe any activity where all trees in an area are

removed.[not in citation given][neutrality is disputed] However in temperate climates, the removal of all trees in an area[not in citation given]—in conformance with sustainable forestry practices—is correctly described as regeneration harvest.[3] In temperate mesic climates, natural regeneration of forest stands often will not occur in the absence of disturbance, whether natural or anthropogenic.[4] Furthermore, biodiversity after regeneration harvest often mimics that found after natural disturbance, including biodiversity loss after naturally occurring rainforest destruction.[5][6]

Deforestation occurs for many reasons: trees are cut down to be used or sold as fuel (sometimes in the form of charcoal) or timber, while cleared land is used as pasture for livestock, plantations of commodities and settlements. The removal of trees without sufficient reforestation has resulted in damage to habitat, biodiversity loss and aridity. It has adverse impacts onbiosequestration of atmospheric carbon dioxide. Deforestation has also been used in war to deprive an enemy of cover for its forces and also vital resources. A modern example of this was the use of Agent Orange by the United States military in Vietnam during the Vietnam War. Deforested regions typically incur significant adverse soil erosion and frequently degrade into wasteland. Disregard or ignorance of intrinsic value, lack of ascribed value, lax forest management and deficient environmental laws are some of the factors that allow deforestation to occur on a large scale. In many countries, deforestation, both naturally occurring and human induced, is an ongoing issue. Deforestation causes extinction, changes to climatic conditions,desertification, and displacement of populations as observed by current conditions and in the past through the fossil record.[5] Among countries with a per capita GDP of at least US$4,600, net deforestation rates have ceased to increase.[when?][7][8]

According to the United Nations Framework Convention on Climate Change (UNFCCC) secretariat, the overwhelming direct cause of deforestation is agriculture. Subsistence farming is responsible for 48% of deforestation; commercial agriculture is responsible for 32% of deforestation; logging is responsible for 14% of deforestation and fuel wood removals make up 5% of deforestation.[9] Experts do not agree on whether industrial logging is an important contributor to global deforestation.[10][11] Some argue that poor people are more likely to clear forest because they have no alternatives, others that the poor...
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