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

Why is deforestation happening?

Extracts from this document...


Deforestation Fion Lai Food is one of life's basic necessities. People produce them around the globe by using a wide variety of agricultural practices. Hence, agriculture is one of the biggest businesses in the world. However, human activities always affect the balance of the ecosystem. Forest is a valuable community of the biodiversity. It contains high diversity, with complex food webs - it contains a large gene pool of plant and animal resources. Also, it plays a very essential role in converting carbon into the way that organisms can absorb. It also converts the nutrients in soil for organism and prevents erosion in regions of high rainfall. The growth in human population increases the demand of land of farming. This causes deforestation. Deforestation upset the whole ecosystem. ...read more.


Harvesting takes away the nutrients from the soil, crops are harvested before they die and decompose in the soil. Farmers then add fertilizers in the soil to provide more nitrite ions for the crops to grow. However, the nitrite ions in the fertilizers are highly soluble and can easily leach into the rivers or seas. This causes eutrophication and leads to many death of organisms. Human societies are concerned with global warming, deforestation, species extinction, the limits to long-term productivity and rising expectations. We understand the importance of healthy forests in our living planet. But the growing populations must be fed, clothed, and sheltered. Today, sustainability is a vital issue in forestry. When agricultural operations are sustainably managed, they can preserve and restore critical habitats and improve soil health and water quality. ...read more.


b) Clearcutting - In clearcutting, an entire stand of trees is removed in one operation. Regeneration may come from sprouts on stumps, from seedlings that survive the logging operation, or from seeds that germinate after the harvest. If natural regeneration is delayed longer than desired, the area is planted or seeded. c) Shelterwood - In shelterwood systems, the forest canopy is removed over a period of years, usually in two cuttings. After the first harvest, natural regeneration begins. By the time the second harvest is made, enough young trees have grown to assure adequate regeneration. Shelterwood systems favor species that are intermediate in tolerance to shade. In conclusion, conversation of forest is important and urgent. There is no easy solution as deforestation is caused by many factors. But for definite, decreasing the amount of use of products that are harvested from the rainforests and using recycling products help. The continuel deforestation wil only bring a severe consequence. ?? ?? ?? ?? 1 ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our GCSE Living Things in their Environment 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 GCSE Living Things in their Environment essays

  1. Evolution, Natural selection and Darwinism

    See <Appendix 4> for example of biochemistry comparison. Theory of Natural Selection Natural selection is the process by which organisms that are better adapted to their environment survive and breed, while those less well adapted fail to do so. <Ref.4 - p202> Every organism is subjected to Selection Pressure, and

  2. Is the preferred habitat of moss on the North side of a Yew Tree ...

    preferred habitat, where it is cool, damp and out of direct sunlight, particularly on the north side. These conditions must have been ideal as one of the moss readings was 100%. Because moss lacks traditional vascular structures of true leaves, stems, and roots, its growth is limited to moist locations.

  1. Global Warming Essay

    4 Arguments against global warming Most scientists do not believe human activities threaten to disrupt the Earth's climate. More than 17,000 scientists have signed a petition circulated by the Oregon Institute of Science and Medicine saying, in part, "there is no convincing scientific evidence that human release of carbon dioxide,

  2. Rain forests.

    The crowns (tops) of these trees dominate the canopy. Emergents receive the greatest amount of sunlight, but they must endure high temperatures and strong winds. The crowns of other trees in the canopy usually form a nearly continuous covering of leaves 65 to 165 feet (20 to 50 meters)

  1. At the end of 1996 the IUCN announced that 33,730 species of plant are ...

    - Quinine comes from the Cinchona trees of the Andes, and is still the most effective anti-malarial agent; it is obtained from their bark, which is stripped off, thus leading to the tree's eventual death. Other discoveries (from the rainforest)

  2. An Investigation into the water quality of the River Banwell in

    Sampling results: Average Standard deviation Percentile 90 Percentile 10 Number of samples Grades Biochemical oxygen demand (mg/l) 1.93 1.00 3.21 30 B Ammonia (mgN/l) .173 .109 .308 30 B Dissolved oxygen (percentage saturation) 83.46 22.55 54.55 30 D The Biochemical oxygen demand was issued a B in this year.

  1. Investigation into Flat Periwinkles on a Sheltered Shore.

    of emersion The wave action is the number of waves that breaks per annum. More waves break in the middle shore than in the lower shore. The seaweed will need to be well anchored; this provides a stable habitat for the snails.

  2. The effect of succession on diversity in heather moorland.

    Reasoned Explanations In this section, each decision I have made receives justification. Point quadrats are more precise than an area quadrat because they count the number of specimens in a particular species, rather than relying on estimates of percentage cover, which introduces human error.

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