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Tribute to Chow Kok Kee - Chairman Chow
 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 
 

 

 

You are here: Home» Forest & Climate » Forest Jewel » Mangrove Ecotourism »  Global Rainforests  »  Deforestation » Forest Management  » Forest Economy »  Forest Restoration » Forest Conservation » CDM Africa Opportunity » CDM Africa Challenges » Bali Roadmap » Copenhagen »  Palm Oil & Climate » Biodiversity in Malaysia » Sustainability  » Tribute to Chairman Chow


Where are the Tropical Rainforests

Tropical rainforest consists primarily of trees which are largely evergreen and moisture loving, with dense canopy of leaves which stops most direct sunlight from reaching the layers below. This provides a moist environment for its own conservation. They feature several vegetation layers, with the tallest layer 30- 60 m.

The ground generally has a light growth of shrubs and herbs. Between the canopy and the undergrowth, the understorey supports many plant species including the rainforest trees,  ...vines and creeper plants often hanging from the trunks and branches of the tall trees. These varying layers of dense vegetation provide a range of habitats for myriads of microorganism,  insect, plant and animal species. They also help to conserve water and act as an important store of nutrients.

Rainforests flourish around the Monsoon Trough, between Tropics of Cancer and Capricorn, centered around the Equator, characterized by high annual rainfall, of 1.7–2.0 m (68-78" or an average rain of 1/8" per day), with an  average temp. of about 25° C whole year round.

Tropical rainforests can be divided into three main geographical zones:

         Amazon Rainforests          Congo Basin Rainforest            S.E. Asia & Australia Rainforest
 
 

Amazon Rainforests, also known as Amazonia, in the Amazon River Basin of Central America is the largest tropical rainforests in the world, covering an extensive area of 1.4 billion acres. This region includes territory belonging to nine nations. The majority of the forest is contained within Brazil, with 60% of the rainforest, followed by Peru with 13%, and with minor amounts in Colombia, Venezuela, Ecuador, Bolivia, Guyana, Suriname, and French Guiana.

The Amazon accounts for more than 54% of the world's remaining rainforests and contains a wider variety of plant and animal life than any other biome in the world. It is home to about 2.5 million insect species, tens of thousands of plant species, and some 2,000 bird species and 300 species of mammals. One in ten known species in the world live in the Amazon Rainforest. The Amazon Basin has the world’s largest river basin and the source of 1/5 of the Earth’s river water. It contains the largest number of freshwater fish species in the world including the infamous carnivorous piranha —more than 3,000 species.

   
Amazon Rainforests along the Amazon River    

Brazil is  noted to have the highest deforestation rate in the world. Since 1970, over 600,000 square kilometers of Amazon rainforest have been destroyed. Amazon deforestation jumped by 69% in 2008 compared to 2007 due to its rapid economic development, according to official government data. Deforestation could  severely damage nearly 60% of the Amazon rainforest by 2030, according to a new report from WWF.

Drivers of deforestation are logging for timber, slash and burn agriculture and livestock grazing, accelerated by improved infrastructure system making easy access into the forests. Agriculture involves planting of soya for export, planting of biofuel, corn as bioethanol feedstock. Brazil is the largest exporter of bioethanol in the world and an exporter of beef. Millions of people depend, directly or indirectly, on the Amazon forests for their livelihood, the forest sector accounts for almost 8% of Brazil's annual wealth. And the great Amazon basin sustains millions of indigenous people who depend on its rich natural endowment for their every need.

 

Congo Rainforests of Sub-Saharan Africa, stretching from Cameroon to the Congo is the second largest in the world after the Amazon. It has 18% of the planet's remaining tropical rainforests. The Congo Basin which stretches 1.5 million square miles, houses 70% of the African continent's plant cover. It makes up a large portion of Africa's biodiversity with over 600 tree species, 100 species of birds, 280 species of reptiles 900 species of butterflies and 10 000 animal species including the gorillas and chimpanzees
 
 


Like most rainforests, the Congo Basin is one of the world's most threatened ecosystems. Commercial logging, clearing for subsistence agriculture, and tribal conflicts has devastated forests and displaced indigenous people. Since the 1980s, Africa has had the highest deforestation rates of any region on the globe. Such devastations have wiped out roughly 90% of the West Africa's rainforests and 67% of Madagascar.
 
In 2000, the six countries of the Congo Basin -- Cameroon, Central African Republic, Republic of the Congo, Democratic Republic of the Congo, Gabon, Equatorial Guinea set aside more than one million hectares of forest lands as forest reserve; with an objective to conserve the remaining rainforests against deforestation..

Due to different scale of development, deforestation in Central Africa affects the forestry cover to a relatively small extent; unlike that in south-east Asia and Latin America where deforestation involves the transformation of large forest stretches into agro-industrial areas.

The Congo Basin rainforests represent an important source of income for its poor people, whose daily subsistence means hinges mainly on what the forests could offer them; without which these people would not be able to merely survive. With the depleting rainforest, the sustainable exploitation and economic optimization of the renewable resources coming from the forests becomes again an urgent development issue.

 

The rainforests of Asia stretch from India and Burma in the west to Malaysia and the islands of Java and Borneo; Queensland and New South Wales of Australia in the east.  Bangladesh has the largest area of mangrove forests in the world. Rainforests of Southeast Asia (Myanmar to Philippines, Malaysia, Indonesia, Papua New Guinea, and northeastern Australia). The Southeast Asian rainforests are the oldest, consistent rainforests on Earth, dating back to the Pleistocene Epoch 70 million years ago. It has a biological richness and diversity unparalleled by that of the Amazon or African rainforests.

  The damp rainforest floor  is an important part of the forest ecosystem. It is where decomposition takes place, during which microorganism and fungi break down dead matters and recycle essential nutrients to support forest ecosystem and growth. High rainfalls constantly wash away soil nutrients resulting in relatively infertile soil nature.
Tall tree (300m) supported by buttressed roots (Left)
Vine-like plants with tall roots
to reach for the Sun (Right)
 

The nutrients decomposition creates are immediately taken up by the biomass of the forest. Because the nutrients are close to the surface, roots don't grow down very far, and trees have adapted by growing buttressed roots up to 30 ft high (Left pic), or stilt roots which hang down from their trunks and branches (Right pic).

Temperatures at the Southeast Asian region has always been almost constant between 25 - 32oCwith high humidity and an average rainfall of 79"  the whole year round . It is with this similar constant weather conditions since millions of years ago, consistent rainforest was nurtured. As sea levels rose and fell through warming and icing cycles, small isolated islands of forests survived with reservoirs of wildlife from which various species could re-adjust themselves to local environments, leading to an amazing diversity of species. Malaysia and the islands of Borneo, Sumatra and Java were all part of the same landmass during the last ice age, thus host one of the richest biodiversities of fauna and flora in the world.

The drought of El Nino in 1992 in Kalimantan of Indonesia created one of the worst forest fires in the world, destroying 27 000 square km of forests, countless plants and animals species within them. In El Nino year 1997, 'slash and burn' fires developed into uncontrollable inferno, emitting enormous amount of particulates forming dense haze. The peat fires burnt for months beneath the forest ground underlined with peat as deep as 20 m; making it impossible to put out, even with concerted international efforts.

The haze spread for thousands of kilometers from Indonesia to Singapore, Malaysia, Brunei and S. Thailand, causing significant economical, social and health impacts. Who finally managed to save this raging inferno? The rain! The rain!  The carbon dioxide emitted from the Indonesia peat forest fire is equal to one year combined greenhouse gas emissions from the EU.

Political instability in some regions has resulted in ineffective law enforcement within protected wildlife areas. It was reported in 2006 by Forest Trends that fervent deforestation activities will cause tropical rainforests in Indonesia to be logged out in 10 years, Papua New Guinea 13 -16 years, with no better situation in Myanmar. Several countries have declared deforestation a national emergency.

In Australia, tropical rainforest and subtropical rainforest are found along the coast and ranges of northern  and eastern Australia including Queensland and northern New South Wales.

 

Scientists at the Climate Change conference in Copenhagen Mar 2009, deliver some alarming news for the rainforests: a rise of 4 degrees will destroy 85% of forest in the next 100 years.

The UN Framework Convention on Climate Change in Rio de Janeiro in 1992 addressed deforestation as a key issue affecting climate. The plan for The Compensated Reduction of greenhouse gas emissions from tropical forests (CR) was set up to give rainforest nations such as Brazil, Indonesia, Malaysia economic incentive to reduce deforestation and its effect on climate change.

Mitigation activities in forestry involving commercial bioenergy in the medium to long term, is expected to contribute positively to employment, economic growth, exports, renewable energy supply and poverty alleviation. Overall, in the long-term, mitigation will increase the carbon sink, mitigate the effect of climate change for the well being of mankind.

The Amazon, the Congo and the SE Asian rainforests are being destroyed just like all the other forests in the world, including the ones in Europe, Asia, North America and Africa. The immensity of the Amazon's challenge, like the scale of its landscape, requires a long-term conservation vision backed by strong scientific expertise. No solution is viable unless the solution incorporates long term vision of forest conservation and human wealth and well being for sustainable economic strategies.

 

 
References and related news:


List of Forest Conservation Organizations: Dir.yahoo.com
Peat Swamp Forest Sarawak
Amazon Carbon Sinks Effect 'Slows': News.bbc.co.uk
Tanzania Forest Conservation Group
Rainforests.mongabay
Congo Basin Tropical Rainforest Location: Diplomatie.gouv.fr

Southeast Asian Rainforests: Blueplanetbiomes.org

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