Tuesday, April 24, 2012

Why The Natural Resources Are Getting Depleted



First of all we must have a better understanding about what is meant by depletion of natural resources. Depletion of natural resources means the exhaustion of raw materials within a region.
Resources, such as forests, fish, fossil fuels, and healthy soils are rapidly being depleted, and these valuable gifts of nature are in danger of vanishing from the planet. There are many reasons for this resource depletion. They are;

  1. *    Over-consumption or unnecessary use of resources
  2. *    Non-equitable distribution of resources
  3. *    Deforestation
  4. *    Overpopulation
  5. *    Technological and industrial development
  6. *    Mining for oil and minerals
  7. *    Aquifer depletion
  8. *    Pollution



Let’s Talk About Some Main Reasons

Overconsumption and over population

Natural resources in the form of materials, water and energy, as well as the land available to us on Earth, are the basis of all living beings on our planet.  Without the constant use of natural resources, neither our economy nor our society could function.

Humankind has consumed more natural resources over the past century than over all earlier centuries put together. As human populations continue to grow to over 6.7 billion, the rates of consumption and waste are increasing rapidly. As populations grow more rapidly, more people are forced to compete for resources.  Resources have been worn away because of people’s greed. Increased wealth has spurred the demand for resources, like luxury foods. Humans in arid, populous regions, like the Middle East, demand more fresh water, which is endangering freshwater environments and species. In less developed countries, like some African countries, surprisingly more water is wasted and pollution is less carefully controlled than in more developed countries. People all over the world have been forced to focus more attention on consumption of resources and moving beyond individual action. In years to come, people may no longer have the luxury they have today.

Furthermore…………..

 The earth does not contain enough resources to indefinitely sustain the current enormous population growth. For instance, there is a limited area of arable land and living space.China, home to 1.2 billion people or 1/5 the world's population, is an excellent example of the kinds of problems that arise in an increasingly crowded society.

In many areas, there is simply not enough food to feed the growing populations. Each day 40,000 children die from malnutrition and its related diseases. 150 million children in the world suffer from poor health due to food shortages.

Another resource, which cannot keep up with an increasing population, is water. The supply of fresh water is limited. Due to this limitation many problems can be occurred. Also the Creating fresh water can be expensive. A swelling population may have to turn to desalinization for their clean water. Oil-rich Saudi Arabia is the only country for which this process has had any success. However, Saudi Arabia does not require the vast amounts of agricultural water that California and other areas need. Another possible solution to the fresh water shortage is towing icebergs from the polar caps. This is just too costly for many areas.

With the overpopulation the depletion of natural resources are getting increased, because the need of resources for their survival are also increased.

Birth control and family planning is the most suitable method for overpopulation……


  Deforestation

  • The term deforestation refers to the clearing of natural forests by logging or burning of trees and plants in a forested area.
  • Presently one half the forests on earth have been destroyed as a result of deforestation……….




Causes:
  1. ·       Logging (both legal and illegal)
  2. ·       Industrialization
  3. ·       Agriculture
  4. ·       Oil exploitation
  5. ·       Human disasters 



Effects:
Because deforestation is so extensive, it has made several significant impacts on the environment,

v Global warming: Because trees and plants remove carbon dioxide and emit oxygen into the atmosphere, the reduction of forests contributes to about 12% of carbon dioxide emissions.

v Decline in Wood: Deforestation causes a dramatic decline in the wood that satisfies industrial, fuel, and other human needs.

v Water Conditions: Deforestation plays a role in the amount of water found in the soil, as well as the level of moisture in the atmosphere

v Precipitation: The loss of vital trees and plants affect the water cycle in many different ways, as the absence of litter, stems, and trunks of trees all play an important role. With less forest covering the land, the ability to ‘intercept, retain, and transport precipitation’ is affected. When precipitation is not trapped, surface water transport occurs at a faster rate. Possible outcomes include flash floods.




This is an aerial photograph that was shot in western Madagascar. As you can see, the dark spots are the trees that are still remaining, but the light orange color is all dirt where thousands of trees were once living. This aerial photograph relates to my topic because wood is one our main natural resources, and deforestation limits the chance to ever grow the trees back in time to use.



How to prevent deforestation

a) Use Recycled Items:

Today, a consumer can purchase a variety of recycled items, including notebook paper, books, toilet paper, and shopping bags. When people use recycled products and make a conscious effort not to waste, the demand for new raw material to replace these items can decrease.

b) Tree Care:

When cutting down trees “single out full-grown specimens and spare younger varieties. In the event that you must remove a tree for a legitimate reason (for safety issues or power line interference), make sure that for every tree lost “another is planted in its place.

c) Farming Practices:

Those who plant crops at a farm can participate in putting a dent in deforestation by rotating crops. It is suggested to replace the habit of using different portions of land each year with using the same portion of land to plant different crops. This practice has proven effective in maintaining soil fertility. Farmers may also embrace many other options, such as high-yield hybrid crops and hydroponics, which relies on a method of growing plants using mineral nutrient solutions instead of soil.

f) Reforestation


g) Support Conservation Organizations:
Lend your support through donations of your time, money, or actions to organizations that run programs concentrating on the preservation of forest habitats, such as Greenpeace, World Wide Fund for Nature, Community Forestry International, and Conservation International.

                    http://en.wikipedia.org/wiki/Over-consumption
                    http://www.environmedia.com  




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