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Chi Hoang
Joined: Apr 24, 2007
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Billion Trees Campaign
October 25, 2007 - 01:18 AM
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One Billion Trees Campaign website: http://www.unep.org/billiontreecampaign/
The United Nations Environment Programme (UNEP) has launched a major worldwide tree planting campaign. Under the Plant for the Planet: Billion Tree Campaign, people, communities, business and industry, civil society organizations and governments are encouraged to enter tree planting pledges online with the objective of planting at least one billion trees worldwide during 2007.
What is the links between climate change and forests?
Trees absorb carbon dioxide and are vital carbon sinks. It is estimated that the world’s forests store 283 Gigatonnes of carbon in their biomass alone, and that carbon stored in forest biomass, deadwood, litter and soil together is roughly 50 per cent more than the carbon in the atmosphere.
Carbon in forest biomass decreased in Africa, Asia and South America in the period 1990–2005. For the world as a whole, carbon stocks in forest biomass decreased annually by 1.1 Gigatonne of carbon (equivalent to 4 billion 25kg sacks of charcoal).
The loss of natural forests around the world contributes more to global emissions each year than the transport sector. Curbing deforestation is a highly cost-effective way to reduce emissions. Other solutions include increased energy efficiency, reduced energy demand, better transport and the use of green energy.
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Chi Hoang
Joined: Apr 24, 2007
Posts: 11 (view all)
Poster Rank:
Soft-spoken
User is
Offline
Gender & Age: Female, 20
Country: Vietnam
Province/State: Ha Noi
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Re: Billion Trees Campaign
October 25, 2007 - 01:19 AM
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What is the deforestation rate in the World?
World population currently stands at 6.5 billion people. It is projected to grow to 9 billion by 2042. The expansion of agricultural and industrial needs, population growth, poverty, landlessness and consumer demand are the major driving forces behind deforestation. Most deforestation is due to conversion of forests to agricultural land. Global removals of wood for timber and fuel amounted to 3.1 billion cubic metres in 2005.
Worldwide, deforestation continues at an alarming rate, about 13 million hectares per year, an area the size of Greece or Nicaragua. Africa and South America have the largest net loss of forests. In Africa it is estimated that nearly half othe forest loss was due to removal of wood fuel. Forests in Europe are expanding. Asia, which had a net loss in the 1990s, reported a net gain of forests in the past five years, primarily due to large-scale forestation in China.
Forest planting and the natural expansion of forests help to reduce the net loss of forests. The net change in forested area in the period 2000–2005 is estimated at 7.3 million hectares a year (an area about the size of Sierra Leone or Panama), down from 8.9 million hectares a year in the period 1990–2000.
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