News tagged with deforestation

Humans may have helped the decline of African rainforests 3000 years ago

(PhysOrg.com) -- Large areas of rainforests in Central Africa mysteriously disappeared over three thousand years ago, to be replaced by savannas. The prevailing theory has been that the cause was a change ...

Space & Earth / Environment

created Feb 10, 2012 | popularity 4.1 / 5 (15) | comments 21 | with audio podcast report

Land-cover changes do not impact glacier loss

A new study shows that land-cover changes, in particular deforestation, in the vicinity of glaciers do not have an impact on glacier loss. However, the study, in which Innsbruck climate researcher were directly involved, ...

Space & Earth / Earth Sciences

created Feb 05, 2012 | popularity 2.7 / 5 (3) | comments 0

ASU, Stanford examine implications of bioenergy crops

A team of researchers from Arizona State University, Stanford University and Carnegie Institution for Science has found that converting large swaths of land to bioenergy crops could have a wide range of effects ...

Space & Earth / Environment

created Feb 01, 2012 | popularity not rated yet | comments 0

Carbon storage in tropical vegetation: New map to help developing nations track deforestation, report on emissions

A study published in Nature Climate Change today finds that tropical vegetation contains 21 percent more carbon than previous studies had suggested. Using a combination of remote sensing and field data, scient ...

Space & Earth / Environment

created Jan 29, 2012 | popularity 5 / 5 (7) | comments 0 | with audio podcast

Economic incentives could massively reduce deforestation emissions in Indonesia, yield billions of dollars

Indonesia has the potential to realize major reductions in national greenhouse gas emissions from deforestation, and simultaneously earn significant new income for national and regional governments, if policies to Reduce ...

Space & Earth / Environment

created Jan 13, 2012 | popularity 5 / 5 (1) | comments 0

Brazil says Amazon deforestation down to lowest level

Brazil said Monday that the pace of deforestation in its Amazon region fell to its lowest level since authorities began monitoring the world's largest tropical rainforest.

Space & Earth / Environment

created Dec 05, 2011 | popularity 5 / 5 (4) | comments 1

Abrupt permafrost thaw increases climate threat

As the Arctic warms, greenhouse gases will be released from thawing permafrost faster and at significantly higher levels than previous estimates, according to survey results from 41 international scientists ...

Space & Earth / Earth Sciences

created Nov 30, 2011 | popularity 4.4 / 5 (13) | comments 6 | with audio podcast

First UN carbon offset project certified

The Conservation Management Institute, a research center within Virginia Tech's College of Natural Resources and Environment, has provided technical expertise for the world's first United Nations' Reduced ...

Space & Earth / Environment

created Nov 08, 2011 | popularity 5 / 5 (1) | comments 1

Panama REDD: Getting what you pay for

A new report by researchers from the Smithsonian Tropical Research Institute in Panama and Canada's McGill University identifies gaps in forest monitoring and ways to improve data collection. This will produce reliable estimates ...

Space & Earth / Environment

created Oct 04, 2011 | popularity 5 / 5 (1) | comments 0

Iran, Iraq pay $1.2 bn to battle sandstorms

A top Iranian environment official said on Monday Tehran and Baghdad will jointly pay $1.2 billion in a project to reduce the number of sand dunes in a bid to cut the number of sandstorms from Iraq.

Space & Earth / Environment

created Oct 03, 2011 | popularity 5 / 5 (1) | comments 1

Deforestation reduces rainfall in Africa

Deforestation in the rainforests of West Africa reduces rainfall over the rest of the forest, according to new University of Leeds research published in Geophysical Research Letters.

Space & Earth / Environment

created Sep 19, 2011 | popularity 3.9 / 5 (7) | comments 8 | with audio podcast

60% of deforested Amazon used for cattle: study

More than 60 percent of deforested areas of the Brazilian Amazon forest are used for grazing cattle, while only five percent is used for agriculture, a new government study said.

Space & Earth / Environment

created Sep 04, 2011 | popularity 5 / 5 (5) | comments 6

Sri Lanka count finds more elephants than expected

(AP) -- The first national survey of Sri Lanka's wild elephants found more than had been estimated - a sign the endangered species has a healthy, growing population on the Indian Ocean island.

Biology / Ecology

created Sep 03, 2011 | popularity not rated yet | comments 5

Google Maps taking armchair explorers to the Amazon

Two women washed clothes in the dark water of the Rio Negro as a boat glided past with a camera-laden Google tricycle strapped to the roof, destined to give the world a window into the Amazon rain forest.

Technology / Internet

created Aug 19, 2011 | popularity 5 / 5 (3) | comments 0

Deforestation in Brazil's Amazon up 15%

Deforestation in Brazil's Amazon increased by 15 percent during the past 12 months, the National Institute for Space Research (INPE) said.

Space & Earth / Environment

created Aug 18, 2011 | popularity 3 / 5 (2) | comments 4

Deforestation

Deforestation is the removal of a forest or stand of trees where the land is thereafter converted to a nonforest use. Examples of deforestation include conversion of forestland to farms, ranches, or urban use.

The term deforestation is often misused to describe any activity where all trees in an area are removed. However in temperate climates, the removal of all trees in an area—in conformance with sustainable forestry practices—is correctly described as regeneration harvest. In temperate mesic climates, natural regeneration of forest stands often will not occur in the absence of disturbance, whether natural or anthropogenic. Furthermore, biodiversity after regeneration harvest often mimics that found after natural disturbance, including biodiversity loss after naturally occurring rainforest destruction.

Deforestation occurs for many reasons: trees or derived charcoal are used as, or sold, for fuel or as 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 on biosequestration 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, for example, was the use of Agent orange in Vietnam. 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.

Among countries with a per capita GDP of at least US$4,600, net deforestation rates have ceased to increase.

For more information about Deforestation, read the full article at Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.