Tropical Rainforest

Tropical Rainforest

1. It includes dense rainforests, where rainfall is abundant throughout the year.

2. Tropical rainforests of all varieties are disapearing rapidly to meet human and urban needs, however, that would only lead to consequences such as social conflicts, extinction of plants and animals, and climate changes. One of the more serious problems would be deforestation.

   • Impacts of deforestation
     • Biodiversity: Many species are specialised in microhabitats within the forest that they can only can be found in the small areas. Their specialisation makes them vulnerable to extinction. When an area is totally deforested, plants and animals in that fragment remain increasingly vulnerable.
       • Global markets consume many rainforest products that depend on sustainable harvesting such as latex and cork.
     • Soil impact: Soil are actually very thin and poor in nutrients. The underlying "parent" rock weathers rapidly in the tropics' high temperatures and heavy rain.
       • 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 would then increase, and soils often are unable to support crops after a few years.
     • Social impact: The tropical rainforest is home to millions of indigenous people. They depend purely on the rainforest to make a living. Deforestation in indigenous territory areas often triggered violent conflicts.
     • Climate impact: Up to thirty percent of the water that falls in tropical rainforests are recycled into the atmosphere. In addition to maintaining the tropical rainfall, the evaporation cools the Earth's surface. Many predictions of decreased rainfall are based on a uniform and virtually complete replacement of tropical rainforests with pasture and cropland.
     • The carbon cycle and deforestation: When people clear the forests, carbon stored in wood are released back into the atmosphere, enhancing the greenhouse effect and global warming.
       • Once the forest is cleared for crop or grazing land, the soils can become a large source of carbon emmissions, In places such as Indonesia, soils of swampy lowland forests are rich in partially decayed organic matters. During extended droughts, the forests and the peat become flammable, and when thjey burn, they release a huge amount of carbon and other types of greenhouse gases. Trees, plants and microorganisms in the soil release carbon when they respire, and huge amounts of carbon are released from decaying leaves and other organic matter.
       • Once the forest is cleared for crops or grazing land, the soils can become a large source of carbon emissions. In Indonesia, the soils of a swampy lowland forests are rich in partially decayed organic matter. During extended droughts, the forests and the peat become flammable, and when they burn, they release a large amount of carbon dioxide and other greenhouse gases.
       • Trees, plants and microorganisms in the soil also respire, releasing carbon dioxide. . Huge volumes of carbon dioxide escape from decaying leaves and other organic matter.

3. Causes of deforestation: People have been deforesting the forest for thousands of years, primarily for crops and livelihood.

   • Direct causes of deforestation are agriculture expansion, extraction of wood, and infrastructure expansion such as urbanization. Most often, multiple processes work simultaneously or sequentially to cause deforestation. The biggest single direct cause of deforestation is the conversion to cropland and pasture, mostly for subsistence.
     • The conversion of forests to cropland usually results in a few direct factors. Such as countries that build roads into remote areas to improve overland transportation of goods. Logging, usually follow road expansion. Farmers and ranchers burn the remaining forest for croplands, completing the deforestation chain that began with road building. Forests that were degraded by logging become fire-prone and there may be fire accidents.
     • Industrial-scale ranching and soybean production for world markets are increasingly important causes of deforestation. In Indonesia, conversion of tropical rainforests to commercial palm tree plantations to produce bio-fuels to export is a major cause of deforestation in Borneo and Sumatra
   • Underlying causes: Poverty is often cited as one of the underlying cause of tropical deforestation, multiple Scientific report shows that that explanations just a simplification. State policies to encourage enconomic development have caused significant, unintentional deforestation in Central America. Availabilty of technologies may also spur rapid clearing of forests.

4. Causes of deforestation: Deforestation has been carried for thousands of years, primarily for crops and livelihood. Lands are also cleared to meet urbanisation demands. Direct causes of deforestations are are agriculture expansion, wood extraction, and infrastructure expansion.

   • Most often, multiple processes work simultaneously and sequentially to cause deforestation. One of the biggest single direct cause of deforestation is the conversion of rainforests to cropland and pasture, mostly for subsistence.
     • The conversion to agriculture land usually results from multiple direct factors.