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Topic: Deforestation


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In the News (Sat 25 May 19)

  
  Deforestation
Deforestation: The conversion of forest to another land use or the long-term reduction of the tree canopy cover below a 10 percent threshold.
Estimates are constantly improving, based on satellite imagery, and deforestation rates change in response to social and economic conditions, as well as quality and accessibility of remaining forest.
Deforestation has already removed about half of the world’s forests, and in your lifetime threatens to eliminate most of the remaining tropical forests.
www.globalchange.umich.edu /globalchange2/current/lectures/deforest/deforest.html   (2959 words)

  
 Deforestation - Wikipedia, the free encyclopedia
Deforestation can be the result of the deliberate removal of forest cover for agriculture or urban development, or it can be an unintentional consequence of uncontrolled grazing (which can prevent the natural regeneration of young trees).
Deforestation alters the hydrologic cycle, potentially increasing or decreasing the amount of water in the soil and groundwater and the moisture in the atmosphere.
Deforestation generally increases rates of soil erosion, by increasing the amount of runoff and reducing the protection of the soil from tree litter.
en.wikipedia.org /wiki/Deforestation   (2859 words)

  
 Deforestation - Facts, Information, and Encyclopedia Reference article
Deforestation is the conversion of forested areas to non-forest.
Deforestation can be accompanied by some degree of desiccation, the gradual reduction of water resources in a deforested region; desertification is an extreme result.
Deforestation can be defined broadly to include not only conversion to non-forest, but also degradation that reduces forest quality - the density and structure of the trees, the ecological services supplied, the biomass of plants and animals, the species diversity and the genetic diversity.
www.startsurfing.com /encyclopedia/d/e/f/Deforestation.html   (2469 words)

  
 Deforestation
Deforestation is the process of changing land use from forestry to a non-forest use.
In the 1980s global deforestation was estimated at 17 to 20 million hectares per year, equivalent to the size of Britain.
Deforested areas consequently, can become drier as a result of the loss of vegetation, increasing the risk of desertification.
www.ace.mmu.ac.uk /eae/Global_Warming/Older/Deforestation.html   (309 words)

  
 [No title]
Rapid deforestation, caused predominantly by the large population boom of the developing country, economic downturn, and mass migration to cities, is destroying much of the natural habitat of Madagascar.
Deforestation is a form of disinvestment for the future generations because the nutrients in the soil would have been lost in time and space.
Deforestation is causing a depletion, not only in forest, but in the species that reside in them.
www.american.edu /TED/projects/tedcross/xdefor21.htm   (4186 words)

  
 Turn Deforestation Into Reforestation
Deforestation — cutting down, burning, and otherwise destroying forests — is occurring at such a rapid pace that if the current rate continues, the rain forests will disappear by the year 2100, and with them more than half of the animal and plant species on the planet.
Deforestation is practiced to make way for cattle raising and agriculture, especially in the tropical rainforests of South America and Southeast Asia, but also in parts of western Europe and North America.
Deforestation has not gone unnoticed, as many governmental and nongovernmental agencies around the world are attempting to reduce and reverse the destruction by engaging in reforestation — the restoration of deforested regions by planting seeds and/or saplings.
charityguide.org /volunteer/vacation/deforestation-reforestation.htm   (865 words)

  
 Deforestation: SE Asia, Southeast Asia   (Site not responding. Last check: )
Deforestation is a critical problem not only because it depletes a natural resource of critical importance to the people of the region that cannot be replaced overnight, but also because of its far-reaching sideeffects.
Deforestation is a major factor contributing to a variety of other environmental problems, including desertification, soil erosion, flooding, mudslides, siltation and sedimentation, habitat destruction and species extinction, and salt and chemical degradation.
Deforestation in Asia is caused mainly by the collection of fuelwood, commercial logging, shifting cultivation and degradation through grazing and fire.
www.lehigh.edu /~kaf3/books/reporting/deforest.html   (965 words)

  
 The Causes of Tropical Deforestation, by John Revington
Deforestation is the inevitable result of the current social and economic policies being carried out in the name of development." -- from An Emergency Call to Action for the Forests and Their Peoples
To confront the true causes of deforestation would have required the UN and its members to question their very foundations, and they have not yet had the courage.
Mining, industrial development and hydroelectric schemes are also significant causes of deforestation, both in terms of the land they occupy and their displacement of forest people.
www.ru.org /32defore.html   (1457 words)

  
 Deforestation in the Amazon
DEFORESTATION IN BRAZIL: 60-70 percent of deforestation in the Amazon results from cattle ranches while the rest mostly results from small-scale subsistence agriculture.
Brazilian deforestation is strongly correlated to the economic health of the country: the decline in deforestation from 1988-1991 nicely matched the economic slowdown during the same period, while the rocketing rate of deforestation from 1993-1998 paralleled Brazil's period of rapid economic growth.
A significant amount of deforestation is caused by the subsistence activities of poor farmers who are encouraged to settle on forest lands by government land policies.
www.mongabay.com /brazil.html   (3608 words)

  
 Deforestation
To understand why deforestation is such a pressing and urgent issue, forests must first be given credit for what they bring to global ecosystems and the quality of life that all species maintain.
Deforestation is causing a loss of biological diversity on an unprecedented scale.
The immediate effects of deforestation may not yet be felt, but if this generation doesn’t feel it the next generation and their children will be the ones to suffer.
www.umich.edu /~gs265/society/deforestation.htm   (3384 words)

  
 Deforestation
Deforestation is the permanent destruction of indigenous forests and woodlands.
Deforestation has resulted in the reduction of indigenous forests to four-fifths of their pre-agricultural area.
Almost all of this deforestation occurs in the moist forests and open woodlands of the tropics.
www.botany.uwc.ac.za /Envfacts/facts/deforestation.htm   (699 words)

  
 BBC NEWS | Science/Nature | Deforestation slowing - UN
Ms Wilkie said that deforestation, mainly the conversion of forests to agricultural land, continued at a rate of about 13 million hectares (32 million acres) per year.
The decrease of forest area was mainly due to deforestation or natural disasters that made the land incapable of regenerating on its own, Ms Wilkie said.
Deforestation was most extensive in South America, where an average of 4.3 million hectares (10.6 million acres) were lost annually over the last five years, followed by Africa with 4 million hectares (9.8 million acres), the Rome-based agency said.
news.bbc.co.uk /2/hi/science/nature/4436116.stm   (464 words)

  
 Oxfam's Cool Planet - On the Line - tropical rain forest - deforestation - the causes
The rate of deforestation in Africa is a cause for extreme concern: around four million hectares of forest are destroyed each year, to the extent that 45 per cent of its original forest cover has disappeared.
Commercial logging, clearance for agriculture, roads and railways, forest fires, mining and drilling, fuelwood collection and clearance for living space are all intimately connected with deforestation, but it is far from obvious as to which is the worst culprit.
Other factors such as the felling of trees for charcoal, and clearance for mining and the extraction of oil are considered less damaging than shifting cultivation and commercial logging, but they nonetheless pose a threat to the existence of the tropical rain forests.
www.oxfam.org.uk /coolplanet/ontheline/explore/nature/rainforest/deforest.htm   (654 words)

  
 Deforestation
Deforestation in the Amazon is between 35,000 (1987) and 50,000 (1988) square kilometres per year producing mostly cattle pasture10.
Deforestation has not been considered in monitoring programs in the Amazon, although fly-ash transport is now being investigated.
It is clear that deforestation is a major source of mercury emission in a form more dangerous than that emitted by "garimpos".
www.mining.ubc.ca /faculty/meech/fire4nat.htm   (1233 words)

  
 Climate Change - What We Do: Reducing Emissions from Deforestation
Despite the fact that deforestation is the second leading contributor of carbon emissions worldwide after the burning of fossil fuels, countries currently have few incentives for preserving their forests.
The Nature Conservancy believes that addressing deforestation must be a part of a comprehensive global climate change strategy that addresses all major sources of carbon emissions.
Deforestation and land-use change contributes approximately 20 percent of the carbon emissions that cause climate change.
www.nature.org /initiatives/climatechange/strategies/art13747.html   (344 words)

  
 Deforestation
The causes to the deforestation problems are related to the social and economic growth of the region.
It was also established that actions against deforestation cannot lower the development of the region and the quality of the life of the people.
To completely stop deforestation means to paralyse the production of basic foodstuffs, commercial crops, timber-related industries, extraction of natural resources such as oil etc. All these will lead to lower living standards of people.
library.thinkquest.org /C001650/html/text_only_english/deforestation.htm   (1155 words)

  
 Rainforest Deforestation
Currently, the major causes of deforestation are agriculture (64%), the logging industry (18%), fuelwood collection (10%) and cattle ranchers (8%) (Rainforest Alliance, 1999).
During 1998, in 63 developing countries, approximately 2.2 billion people could not get enough fuelwood to meet their basic needs or were forced to meet their needs by using wood faster than it was being replenished (Miller, 2000).
Deforestation of the world's rainforests has numerous impacts on the environment and is occurring at alarming rates.
kanat.jsc.vsc.edu /student/callahan/mainpage.htm   (4225 words)

  
 Earth Observatory Reference: Tropical Deforestation
In addition to the species lost when an area is totally deforested, the plants and animals in the fragments of forest that remain also become increasingly vulnerable, sometimes even committed, to extinction.
When an area is completely deforested for farming, the farmer typically burns the trees and vegetation to create a fertilizing layer of ash.
After this slash-and-burn deforestation, the nutrient reservoir is lost, flooding and erosion rates are high, and soils often become unable to support crops in just a few years.
earthobservatory.nasa.gov /Library/Deforestation   (818 words)

  
 MULTITEMPORAL ANALYSIS OF DEFORESTATION IN HONDURAS
Deforestation is highly related to growth-population rate, so Central America being one of the fastest growing regions in the world, has a deforestation rate even higher than South America, where the large Amazon jungle is located (1.5% and 0.6% respectively), and close to the deforestation rate of South Asia, which is 1.6% (Aldobous, 1993).
An obvious example of the status of deforestation in the country is the case of El Cajon, (the box), a $750 million hydroelectric generating power dam that was built in the early 1980's being the nations largest reservoir and the source for 70 percent of the power needs.
The deforestation rate was 332 square km/year (33,200 has/year) for pine forest, and 498 square km/year (49,800 has/year) for broadleaf forest.
www.nr.usu.edu /Geography-Department/rsgis/Projects/RSGIA95/gis26/gis26.html   (2688 words)

  
 BookRags: Deforestation Summary
Deforestation occurs when the trees in a forested area are cut or destroyed faster than they can replace themselves.
Natural deforestation is caused by changes in weather patterns during glacial periods, fires started by lightning, windstorms, floods, and volcanic eruptions.
Deforestation, slumping, and soil erosion in Papua New Guinea's Star Mountains caused by a combination of mining and heavy tropical rainfall.
www.bookrags.com /research/deforestation-plsc-02   (1024 words)

  
 Deforestation - pushed our wildlife on the verge of extinction & de-stabilized the ecological balance
Destructive capacities of the humans are have made deforestation a problem.
Deforestation has today become a grave issue that has pushed our wildlife on the verge of extinction.
Commercial timber industry is a major cause of deforestation in Asia, Africa, and the Amazon.
www.care4nature.org /ecoinfo/planet/deforestation.htm   (143 words)

  
 Deforestation   (Site not responding. Last check: )
Scientists believe deforestation alters weather patterns and contributes to global warming, accounting for up to 25 per cent of the carbon dioxide released into the atmosphere each year.
With little or no plant life to hold it in place, hillside soil is quickly eroded by rain or run-off, filling rivers and lakes with silt, which is harmful to fish.
The major cause of deforestation is population growth and resulting increases in demand for wood products or forest land.
www.pacificislandtravel.com /nature_gallery/deforestation.html   (617 words)

  
 DEFORESTATION
Deforestation can result in many negative effects on the ecology and systematic cycles of the surrounding environment.
Deforestation has caused hundreds of thousands of wildlife species to go extinct by reducing or eliminating crucial habitat.
Deforestation causes or at least aids erosion because the root systems are removed or decomposed, which usually hold the soil in place.
www.uvm.edu /~jmoore/envhst/jdeslauriers/indexhome.html   (831 words)

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