The 2021 Desertification and Drought Day to be held on 17 June will focus on transforming degraded land into healthy land.
The day serves as a unique opportunity to remind everyone that land degradation neutrality is achievable through problem-solving, community involvement, and cooperation at every level. It is critical to restoring degraded land in order to increase food security, create jobs, and increase incomes.
It contributes to the recovery of biodiversity. As a result, it locks away the carbon dioxide warming our planet, slowing climate change. In addition, it can reduce the effects of climate change and support a green recovery from the COVID-19 pandemic. Take this Quiz on How Much Do You Know About Desertification and Drought and check for yourself. Don’t forget to share and challenge your friends!
This is a timed quiz. You will be given 600 seconds to answer all questions. Are you ready?
Why Does Overgrazing Lead To Desertification?
Desertification usually begins with the removal of vegetation cover by humans or livestock, with the exception of irrigation-induced degradation. Grazing on the top layer of soil, together with the collection of excessive fuelwood, destroys that protective layer, exposing it to erosion by wind and water.
Which Of the Following Statements is NOT a Human Cause Of Desertification?
There is less precipitation and more likelihood of drought when there is less water vapour in the atmosphere. A high-pressure system reduces evaporation and moisture in the atmosphere. El Nio disrupts storm patterns as the temperature of the Pacific Ocean around central South America increases.
Where Does Desertification Occur?
Desertification can take place anywhere as long as there is land with soil. In most cases, the phenomenon is seen in drylands that suffer from droughts or heavy amounts of migration.
With Desertification, Without the Plants That Held It in Place, The Fertile Topsoil Would …
Grazing excessively can result in ground cover reduction, allowing wind and rain to cause erosion and compaction. This reduces the ability of plants to grow and water to penetrate the soil, which harms soil microbes and causes severe erosion. Half of the topsoil on the planet Earth has been destroyed in the last 150 years. The quality of soil is affected by other factors besides erosion. Compression, loss of soil structure, nutrient degradation, and salinization are some of the impacts. Oftentimes, these problems can be very severe.
Desertification Can Be Reversed.
Reversing desertification is a difficult task, but it is achievable with dedication. In 1994, the United Nations Convention to Combat Desertification (UNCCD) was founded in order to manage and develop land that has succumbed to desertification. In order to begin salvaging lands destroyed by desertification, strategies such as reforestation, soil fertilization, and water management have been implemented.
The term overgrazing refers to the practice of grazing too many livestock for too long on land that is unable to recover vegetation or of grazing ruminants on land that is unsuitable for grazing due to certain physical characteristics such as its slope. In addition to desertification and erosion, it reduces the productivity of the land and its biodiversity.
Which Of the Statement Mentioned Below Is NOT A Reason Why Biodiversity Important?
Biodiversity is crucial for a variety of reasons. Biodiversity contributes to healthier, more sustainably managed ecosystems that provide us with many benefits, such as protecting water resources and recovering from disasters. The genetic variety of livestock, crops, and marine organisms raised for food guarantees that humans are supplied with a healthy, nutrient rich diet. Diversity ensures that natural enemies are able to control pests in ecosystems, which is integral to biological control.
Sandstorms And Migration Are Possible Negative Consequences Of:
In deforestation, forests are cut down across the world to create agricultural crops, urban settlements, or mining operations. Since 1960, human activities have greatly accelerated deforestation, which has negatively impacted natural ecosystems, biodiversity, and the climate.
Which Land-Based Ecosystem Has The Most Biodiversity?
Globally, the tropics are home to the most biodiversity, with rainforests being the ecosystems that are the most abundant in species. Although the tropical forests cover only 6% of the Earth’s surface, they are home to one half to three quarters of the plant and animal species worldwide.
What Is Desertification?
The term "desert" is often associated with sand, but desertification does not necessarily mean that the land will become sand-covered. Rather, desertification occurs when an ecosystem lacking water, such as a dryland ecosystem, becomes unproductive due to pollution or human activity.
Which Of The Following is NOT a Negative Impact Caused By Deforestation?
Globally, forests are home to approximately 80% of terrestrial biodiversity, while a large number of indigenous people (about 60 million) are entirely dependent on the forest for their sustenance and livelihood. Many more people dwell near forests and are dependent on them. In the context of the economy, forests contribute 75-100 billion US dollars of goods and services every year.
What Is Known As The “Sixth Extinction”?
In her book The Sixth Extinction, Elizabeth Kolbert writes that humans are responsible for much of this catastrophic outcome, particularly the use of fossil fuels and climate change.
Deforestation Is the Second Most Significant Cause Of Global Warming In The World.
About 24% of global greenhouse gas emissions come from deforestation, which is the second leading cause of global warming. In the tropical rainforests, deforestation contributes more carbon dioxide to the atmosphere than all the cars and trucks on the road combined.
What Can You Do to Fight Deforestation?
The things listed above can all help you combat deforestation. You can also recycle forest products, choose to purchase recycled forest products, avoid products with palm oil, and support organizations that reforest and conserve forests.
Cattle Stripping Out Vegetation And Leaving Bare Ground Could Lead To Eroding Soil. What Is The Term For This?
Overgrazing occurs when animals overgraze an area of land without allowing the vegetation to fully recover from that overgrazing. Overgrazing can be harmful to native species in a number of ways, including land degradation, soil erosion, and the extinction of valuable species.
All of the Following Are Ways to Slow Desertification EXCEPT:
Desertification is also a major cause of food production. Cropland can expand into forests and grasslands as demand for food increases, and intensive farming methods can be used to maximize yields. Livestock overgrazing can deplete rangelands of vegetation and nutrients. Conversely, excessive fertilizers, a lack of crop rotation, and irresponsible irrigation practices deplete soils of their nutrients.
The Method of Removing Salt and Other Minerals from Sea Water Is:
During desalination, minerals are removed from saline water. Defined more broadly, desalination refers to removing salts and minerals from a specific substance, as when applying it to soils, which is an important part of agriculture. Maritime vessels and submarines use desalination to replenish their water supplies.
Which Of the Following Statements Is True?
Human activities, including burning fossil fuels, which increase levels of heat-trapping greenhouse gases in Earth's atmosphere, are largely responsible for the long-term warming of Earth's climate system observed since the pre-industrial period (between 1850 and 1900). Higher temperatures worsen heatwaves, flooding, and drought. Warm climates create an atmosphere that can hold, drop, and collect more water, resulting in more rainfall and drier conditions in wet areas, and more rainfall in dry areas.
An EFFECT of Desertification is:
Decreased crop yields are one of the key effects of desertification. Additionally, once land turns from arable to arid, it is no longer suitable for farming. Consequently, many farmers may lose their livelihoods since farming is often their only source of income.
What Is The Desert Fringe Also Known As?
These transition zones have very fragile, delicately balanced ecosystems. Desert fringes often are a mosaic of microclimates. Small hollows support vegetation that picks up heat from the hot winds and protects the land from the prevailing winds. After rainfall the vegetated areas are distinctly cooler than the surroundings. In these marginal areas, human activity may stress the ecosystem beyond its tolerance limit, resulting in degradation of the land.
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