Deforestation and Urbanization, Study Notes, Material - REET Paper 2

By Neha Joshi|Updated : August 4th, 2021

Deforestation

Cutting down large numbers of trees in forests is known as Deforestation. It affects an ecosystem drastically. Deforestation is one of the major causes of environmental imbalance.

Urbanization

Urbanization refers to the population migration from rural to urban areas. In the contemporary world, urbanization has become a popular trend. The main reason for urbanization is more job opportunities and a better standard of life.

How urbanization results in deforestation?

Urbanization can result in deforestation in many ways. Two examples of which are-

  • First, when rural-urban migrants adopt city-based lifestyles, they prefer to make use of more capital, as their income increases. This, in effect, drives land clearing for grazing livestock and forage.
  • Meeting the food needs of a growing and urbanizing global population requires additional cropland and thus again results in deforestation.

Deforestation

Cutting down large numbers of trees in forests is known as Deforestation. It affects an ecosystem drastically. Deforestation is one of the major causes of environmental imbalance.

Urbanization

Urbanization refers to the population migration from rural to urban areas. In the contemporary world, urbanization has become a popular trend. The main reason for urbanization is more job opportunities and a better standard of life.

How urbanization results in deforestation?

Urbanization can result in deforestation in many ways. Two examples of which are-

  • First, when rural-urban migrants adopt city-based lifestyles, they prefer to make use of more capital, as their income increases. This, in effect, drives land clearing for grazing livestock and forage.
  • Meeting the food needs of a growing and urbanizing global population requires additional cropland and thus again results in deforestation.

Ozone Layer Depletion

The basic cause of ozone layer depletion is the presence of chlorine-containing gases (primarily CFCs and associated halocarbons). In the presence of UV light, these gases dissociate(breakdown), releasing chlorine atoms, which then go on to catalyze(increase the rate of a chemical process resulting in) ozone depletion.

Ozone Layer and Global warming

Due to deforestation and urbanization, the percentage of greenhouse gases increase this provides suitable conditions for the CFCs to deplete the ozone layer. The heat coming from the sun is reflected back after hitting the earth’s surface but the greenhouse effect reduces the heat from escaping the earth. Greenhouse gases like CO2 trap(absorb) heat, in turn, heating the earth’s surface but this has an opposite effect in the stratosphere as heat is trapped near the earth’s surface. The colder environment near the stratosphere supports the process of ozone depletion. This way human activities like deforestation and urbanization result in the depletion of the ozone layer.

Acid Rain

Acid rain is caused by a chemical reaction that starts with the release of compounds such as sulfur dioxide and nitrogen oxides into the air. Such compounds can rise very high up into the atmosphere, where they combine and react with water, oxygen, and other chemicals to create more acidic contaminants called acid rain.

Harmful effects of Plastic Bags

Bags made from polythene have adverse environmental effects. Polythene bags are one form of non-biodegradable plastics that cause environmental pollution. They undergo a process known as photodegradation, in which they break down into smaller poisonous particles.

This proves disastrous to Wildlife. Plastic bags can choke fish, animals, and birds or poison them,  marine wildlife is especially vulnerable to these toxic agents. "If seabirds, marine mammals or fish eat plastic particles, blocking the gut is likely to harm or even kill the organism”.

What are those fossil fuels?

Fossil fuels are rock-like, gas-like, or liquid-like resources that are burned to produce energy. They include coal, natural gas, and oil, and they are used as a source of energy in the electricity and transport sectors. They're also a big cause of emissions from global warming.

Global warming emissions

The disastrous effect of natural gas is not only produced when they are burned at power plants or in our homes as fuel. The full effect of natural gas on global warming also involves methane emissions from drilling wells and transporting pipelines.

Burning fossil fuels

Some of the largest hidden costs of fossil fuels come from air pollution that occurs when it is burned. Fossil fuels when burned release both carbon dioxide and other toxic air pollutants. The burning of Fossil Fuels like coal, oil, and natural gas may have very different types of impacts on the environment, such emissions result in a wide variety of public health and environmental costs being borne locally, regionally, nationally, and internationally.

Ways to Protect our Environment

Afforestation

Afforestation is the method of planting trees, or sowing seeds, to establish a forest in a barren land devoid of any vegetation. This is the converse process of deforestation. Afforestation can help in reducing Global Warming.

Reduce Paper Waste

Industry experts indicate that about 24 trees are needed when using chemical pulping to produce 1 ton of printing paper. The 24 trees will have to be a mixture of softwoods and hardwoods, with a diameter of about 6-8 inches each about 40 feet tall. This can be avoided by printing less and using the soft copy of data to process daily life Human necessities.

The 5 R’s for the environment

The five R's of the environment are refuse, repurpose, reduce, reuse, and recycle. All the above five ways help to reduce the amount of waste that we throw away. They preserve the natural resources, space for landfills, and electricity. Moreover, these also help in saving land and money which was before being used to dispose of waste.

R’s

Meaning

Reduce

To lessen the use of products that can harm the environment.

Reuse

To use a used item again in order to reduce waste.

Refuse

Refuse to buy or sell items that can harm the environment.

Recycle

Recycle the items that can be reproduced like paper, plastic, glass bottles, etc.

Repurpose

To but something and use it for a different purpose

Disaster Management

Disaster management can be defined as organizing and managing resources and responsibilities to address all humanitarian aspects of emergencies, in particular preparedness, response, and recovery, in order to lessen the impact of disasters.

 

 

 

Thanks!

Sahi Prep Hai to Life Set hai!

Posted by:

Neha JoshiNeha JoshiMember since Aug 2019
Postgraduate in Biophysics, Writer and Art Enthusiast
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Comments

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Bikram Keshari Jena
Thanks,Neha ki🙏🙏🙏
Priya

PriyaJul 17, 2020

Thank you for your kind help

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  • Cutting down large numbers of trees in forests is known as Deforestation. It affects an ecosystem drastically. Deforestation is one of the major causes of environmental imbalance.

  • Urbanization refers to the population migration from rural to urban areas. In the contemporary world, urbanization has become a popular trend. The main reason for urbanization is more job opportunities and a better standard of life.

  • Urbanization can result in deforestation in many ways. Two examples of which are-

    • First, when rural-urban migrants adopt city-based lifestyles, they prefer to make use of more capital, as their income increases. This, in effect, drives land clearing for grazing livestock and forage.
    • Meeting the food needs of a growing and urbanizing global population requires additional cropland and thus again results in deforestation.


  • Acid rain is caused by a chemical reaction that starts with the release of compounds such as sulfur dioxide and nitrogen oxides into the air. Such compounds can rise very high up into the atmosphere, where they combine and react with water, oxygen, and other chemicals to create more acidic contaminants called acid rain.

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CTET & Teaching

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tags :CTET & TeachingEnvironmental StudiesREET OverviewREET Admit Card & Exam CentreREET Exam DatesREET VacancyREET Application Form

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