Environmental Studies · Geography

Deforestation and Land Degradation

2,619 Questions

Deforestation and land degradation address the environmental impacts of human activities on natural ecosystems. Key areas include soil erosion, forest fires, and the consequences of overgrazing. These subjects frequently appear in the geography and environmental science sections of competitive exams.

Causes of deforestationForest fires consequencesSoil erosion factorsDesertification impactsAgroforestry benefitsReforestation advantages

Deforestation and Land Degradation Questions

Multiple choice geography international development international development and world population and its impact on resources population growth and impact on resources reproductive health in humans

Deforestation results in _________.

  1. Droughts

  2. Flooding

  3. Both A and B

  4. Earthquake
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Forests naturally absorb water from rainfall and slowly release the water into the rivers. After deforestation, rainfall flows too quickly to the rivers, stripping the topsoil and causing erosion and flooding to occur. When these floods break the river's banks, further problems arise as the path of the river changes and further soil erosion occurs along the river's new path. Deforestation also makes an area more arid, contributing to droughts.

Multiple choice geography international development international development and world population and its impact on resources population growth and impact on resources reproductive health in humans

One third of the earth's land is threatened by ________.

  1. deforestation

  2. desertification

  3. soil erosion

  4. global warming
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Desertification is a major environmental issue that threatens approximately one-third of the Earth's land surface, particularly in dryland areas.

Multiple choice geography mineral resources in rajasthan climate and season cycle climate, soil, natural vegetation and animals of rajasthan study of rocks and soil formation position of rajasthan in indian economy

The main reason for increasing soil erosion in desert areas is due to ________.

  1. high temperature

  2. lack of vegetation

  3. sandy texture

  4. low rainfall
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

B. Lack of vegetation

The main cause of soil erosion is the removal of vegetation. Vegetation removal takes place due to removal of forest covers and exposes the topsoil to water and wind. Unscientific farming has also led to barren lands.

Multiple choice commercial studies forest : our life conservation of forest and wildlife wildlife forest - the dwelling place of animals deforestation and conservation

Which of the following human activities hampers the activity of forest conservation?

  1. Deforestation

  2. Aforestation

  3. Soil erosion

  4. Both A and C
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Deforestation directly removes trees, and soil erosion degrades the land, making it difficult for forests to regenerate or survive. Both activities significantly hamper forest conservation.

Multiple choice commercial studies forest : our life conservation of forest and wildlife wildlife forest - the dwelling place of animals deforestation and conservation

Which of the following activities helps in forest conservation?

  1. Deforestation

  2. Afforestation

  3. Global warming

  4. None of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Forest conservation is the practice of planning and conserving forests for the sustainability of future generations. Deforestation is the clearing of trees and thereby transforming a forest into cleared land. It results in the loss of habitat for millions of species. Global warming is condition in which there is increase in the earth's surface temperature due to effect of greenhouses gases which are released due to burning of soil, deforestation, etc. Afforestation is the establishment of a forest in an area either naturally or artificially where there was no forest previously. 

Thus, the correct answer is option B.

Multiple choice commercial studies forest : our life conservation of forest and wildlife wildlife forest - the dwelling place of animals deforestation and conservation

Which of the following is the great threat to the forest?

  1. Education

  2. Urbanization

  3. Industrialization

  4. Both B and C
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
Option 'D' is correct.
Due to urbanisation, cities are expanding into areas of forests, leading to deforestation. Due to the increase in population, pressure on forest also increased to meet the basic needs of people for resources. Also, due to the industrilization, forest is used to provide raw materials for manufacturing of various products.
Multiple choice economics sustainable development with equity liberalisation objectives of economic planning in india need for sustainable development introduction to social movements and its types social movements

 Land in India suffers from varying degrees and types of degradation stemming mainly from ______ and _______.

  1. improper use, inappropriate management practices

  2. terrace farming, crop rotation

  3. deforestation, land pollution

  4. none of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Land degradation in India is primarily attributed to improper land use and poor management practices, which lead to erosion and loss of fertility.

Multiple choice economics sustainable development with equity liberalisation objectives of economic planning in india need for sustainable development introduction to social movements and its types social movements

Land degradation is caused by _____.

  1. unsustainable extraction of fuel, wood and fodder

  2. shifting cultivation

  3. encroachment into forest lands

  4. all of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
Some of the factors responsible for land degradation are (i) loss of vegetation occuring due to deforestation (ii) unsustainable fuel wood and fodder  extraction (iii) shifting cultivation (iv) encroachment into forest lands (v) forest fires and over grazing (vi) non-adoption of adequate soil conservation measures (vii) improper crop rotation (viii) indiscriminate use of agro-chemicals such as fertilisers and pesticides (ix) improper planning and management of irrigation systems (x) extraction of ground water in the competing uses of land for forestry, agriculture, pastures, human settlements and industries
Multiple choice economics sustainable development with equity liberalisation objectives of economic planning in india need for sustainable development introduction to social movements and its types social movements

Factors responsible for land degradation are _______________.

  1. improper planning and management of irrigation systems

  2. improper crop rotation

  3. indiscriminate use of agro-chemicals such as fertilisers and pesticides

  4. All of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
Land degradation is characterized as the transitory or changeless decrease in the gainful limit of the land, and the lessening of the beneficial potential, including its significant land utilizes, its cultivating frameworks, and its incentive as a financial asset.
Hence, option D is correct.
Multiple choice evs - i rules are for everyone soil and its conservations soil pollution-control protecting our environment sustainability of natural resources adaptations - mangrove swamps, fast flowing rivers and treetops halophiles

Soil erosion can be prevented by

  1. Overgrazing

  2. Removal of vegetation

  3. Afforestation

  4. Increasing birds population
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
Soil erosion can be prevented by afforestation and reforestation. Reforestation is restoration of forests, which have been destroyed by deforestation, while afforestation is planting of new forests. Plants hold soil with there roots and thus prevent erosion.
So, the correct answer is 'Afforestation'
Multiple choice evs - i rules are for everyone soil and its conservations soil pollution-control protecting our environment sustainability of natural resources adaptations - mangrove swamps, fast flowing rivers and treetops halophiles

Soil erosion can be prevented by 

  1. Over grazing

  2. Removal of vegetation

  3. Afforestation (plantation)

  4. Increasing bird population
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Afforestation is the process of establishing a forest on land, that has not been a forest for a long time by planting trees or their seeds. Soil erosion is when the soil is blown away by the wind or washed away by the rain. Roots of trees or plants hold the soil. Thus, when more trees are planted their roots do not allow the soil to be blown or washed away and prevent soil erosion.

Multiple choice commercial studies striving for a better environment soil and its conservations soil pollution-control protecting our environment

Which of the following statements is not correct?

  1. Forests does not protect the soil from erosion

  2. Plants and animals in a forest are not dependent on one another

  3. Forests influence the climate and water cycle

  4. Soil helps forests to grow and regenerate
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
Trees reduce the rate of erosion by protecting the soil from the impact of rain,
transpiring large amounts of water, which counteracts very wet soil,
binding soil to sloping land with their roots. Forests play a major role in the prevention of the soil erosion.
Thus answer is "Option A"
Multiple choice commercial studies striving for a better environment soil and its conservations soil pollution-control protecting our environment

Soil erosion can be prevented by 

  1. Overgrazing

  2. Removal of vegetation

  3. Afforestation

  4. Deforestation
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Afforestation is the establishment of a forest or trees in an area where there was no forest. As the roots of trees spread deep into the layers of soil, they hold it tightly, thus preventing soil erosion. 

Therefore, the correct answer is option C.

Multiple choice commercial studies striving for a better environment soil and its conservations soil pollution-control protecting our environment

Forests

  1. Maintain natural balance

  2. Control atmospheric pollution

  3. Prevent soil erosion

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
Forests are essential to life on Earth. Without them, the energy of the sun would not be harnessed through the process of photosynthesis, nor would oxygen be released through the same process. Aside from these two vital ingredients to life, they are also important in that they are home to countless species of plants and animals, many of which are endangered. Though tropical forests cover only 7% of the Earth's land mass, they are home to more than 50% of the world's 10-50 million plant and animal species. Often, the plants in the forests also provide us with medicines. On a more basic level, they have provided the human race with wood for centuries, without which people would not be living at the level of comfort they have today.
Having a few trees around homes can cut heating and cooling energy costs in half! Also, with increased levels of contamination of groundwater by chemicals, it is important to note that the thin hair-like root fibers of trees helps in filtering the water. The leaves also act as natural filters of air and water by removing particulate matter. A very important function of trees in the growing concrete-based world is in flood control. The roots hold soil in place, which would otherwise be washed away in heavy rains. Trees also act as natural barriers to the weather elements such as wind and snow. In effect, they are nature's method of climate control.
On a more social level, trees are important to people since they are very aesthetically pleasing -- they provide the scenery which helps relax people. As such, they are a valuable resource for recreation, which in turn contributes to local and national economic growth by providing more jobs.
Multiple choice commercial studies striving for a better environment soil and its conservations soil pollution-control protecting our environment

Soil erosion can be prevented by

  1. Increase in bird population

  2. Afforestation

  3. Over-grazing

  4. Removal of vegetation
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Afforestation is the planting of vegetation. The vegetative cover protects the soil from the beating and dispersing action of the raindrops by forming a canopy over the soil surface. Vegetation also acts as a mechanical obstruction to flowing water, thus reducing its erosive potential. The plant roots help in building a better structure. They said in opening the soil and thereby accelerating water absorption and reducing surface run-off.
All other factors given in the options will promote soil erosion.
Therefore, the correct answer is option B.