• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

With reference to one major biome you have studied, evaluate the role of human activity in modifying its characteristics

Extracts from this document...


With reference to one major biome you have studied, evaluate the role of human activity in modifying its characteristics. A biome is a large scale or global ecosystem where biotic and abiotic elements interact with eachother producing a stable system that is in equilibrium. An example of this is the hot, wet equatorial climate where tropical rainforest is the dominant vegetation. Here the biotic elements such as the trees and animals for example sloths interact with the abiotic elements such as the poor soils and hot climate. The rainforest is millions of years old and remained undisrupted and in equilibrium for much of this time. However, as people exploit the rainforests resources, in particular its valuable trees, the equilibrium is changing. With trees being cut down at a rate of 40 hectares per minute how can it not? Why are they needed? Tropical rainforests cover over 7% of the earth's surface and play an important part in maintaining environmental and climatic stability. They help reduce soil erosion, prevent flooding and as the trees hold the soil together they stop a loss of nutrients from the soil. ...read more.


The island of Java is the most populated island in the world and Jakarta has a very high population density. In Brazil in the 1960's the government wanted to develop the Amazon for cattle ranching as during this time world beef prices were high and would bring a lot of revenue to the country. To encourage investment in the Amazon tax exemptions were given to companies investing in agriculture and livestock. The growth of cattle ranching in the Amazon due to the demand for beef particularly in fast food restaurants is the main cause of deforestation. Similarly in Malaysia, TNC's companies investing there were given land by the government for doing so. Here the philosophy is 'develop now, tidy up later.' However, due to lessening timber resources and international pressure Malaysia is rethinking its policies on logging and the rainforest. In Indonesia the government rarely enforces selective logging regulations. In the Amazon this has not been the case where a large amount of logging is done selectively though very few forest management techniques have been put in place. ...read more.


The products grown on the farmland can be sold providing a further income for people or they could become subsistence farmers and provide food for themselves. The actual wood that is taken is a large source of revenue for developing countries and with this money they can pay off debts faster and hopefully the rate of development will speed up. This benefits the country as a whole as standards of living and education etc will improve as the country develops. The rainforests rich biodiversity is a source of many plants that are used for medicinal purposes. Over 40% of medicines are derived from plants and animals, many of which are native to rainforests. This is of worldwide importance as medicines are vital in improving healthcare in all countries. Other products such as coffee and other food are also got from the rainforest and though they are processed many of the raw materials are from there. The timber that is logged is also important for buildings, furniture, fuel etc and is an important part of everyday life and this shows the human impact as being necessary as these things are important to living. ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our AS and A Level Environmental Management section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related AS and A Level Environmental Management essays

  1. Thailand Highways Management Project

    Asset value of the road network increased by 0.2 percent by EOP (or decline reversed). 3. Reduced vehicle operating costs by 10-15 percent on target roads. 4. National road database established, updated annually, and used for planning programming, budgeting, and monitoring of highway investments and maintenance expenditure.

  2. Deforestation in the Worlds Tropical Rainforests

    Their main aim is to preserve areas of rare endangered species whilst protecting the Amazonian Indians settlement area.

  1. Free essay

    How is Human Activity affecting the Tundra Environment ?

    existent .Grasses are much tougher and eventually cover the entire area severely reducing the biodiversity . Walkers also affect the vegetation in theTundra as paths are soon formed by the repetitive footprints and while this would not be a big problem in a different climate such as the Uk .

  2. Evaluate the impact of deforestation in Indonesia.

    treated for infections, over 1000 for asthma related illnesses and about 500 for eye problems. Any Air Pollution Index over 500 is dangerous to people's health, in Malaysia it was above 800. Continuous deforestation may also result in severe flooding; in October 2000, districts surrounding one of the national parks

  1. What are the effects of Deforestation?

    Denitrification is achieved by bacteria that live deep in the soil and in aquatic sediments. Because the conditions are anaerobic, they use the nitrates as an alternatie to oxigen for the final electron accceptor in their respiration. (5) Another process, called volatilization turns urea fertilizers and manures on the soil surface into gases that also join the atmosphere.

  2. The impact of human activity in tropical rainforests - examples from Madagascar.

    peripheral zone in which some exploitation of the forest is permitted * The peripheral zone contains more than 100 villages with over 25,000 residents, most of whom are subsistence farmers. The aim of the RNP is to: * Promote research on biodiversity * Share information with policy makers and scientists,

  1. The characteristics of the vegetation of tropical biomes are more the outcome of continued ...

    iron compounds are carried up through the soil and precipitated close to the surface. There are many types of vegetation in savannas, including grasses, trees and scrub. All, however, are xerophytic (adapted to drought) and pyrophytic (adapted to fire). Adaptations to drought include deep taproots to reach the water table,

  2. "There has been debate over present day characteristics of the biome of tropical regions. ...

    up until the point that the economy of the region has developed sufficiently so that they no longer need to exploit the natural resource. Timber isn?t the only resource the rainforest had to offer, oil and gas are extracted in the western side of the amazon, and gold mining (a

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work