5.2. Consequences of Deforestation

Paheli and Boojho recalled the consequences of deforestation. They remembered that deforestation increases the temperature and pollution level on the earth. It increases the level of carbon dioxide in the atmosphere.

Deforestation leads to the removal of trees, which play a crucial role in absorbing carbon dioxide. When trees are cut down, less carbon dioxide is removed from the atmosphere, leading to higher levels of this greenhouse gas. This increase in carbon dioxide contributes to the greenhouse effect, which raises temperatures globally and worsens pollution levels.

Think of trees as the lungs of our planet. Just as our lungs filter out carbon dioxide and provide us with oxygen, trees help clean our air by absorbing carbon dioxide. When we lose trees, it's like reducing the capacity of our lungs, which makes the environment 'sick' due to high carbon levels.

Ground water level also gets lowered. They know that deforestation disturbs the balance in nature.

Trees play a significant role in maintaining the water cycle. They absorb rainwater through their roots and release it slowly back into the atmosphere through a process called transpiration. When trees are removed, less water is absorbed, causing groundwater levels to drop. This can lead to a scarcity of water for human use, agriculture, and wildlife.

Imagine a sponge soaking up water. When you remove the sponge (the trees), water flows away quickly without being absorbed, leading to dry areas. Just like how a sponge helps maintain moisture in a kitchen, trees are essential for keeping our land hydrated.

Moreover, there will be increased chances of natural calamities such as floods and droughts.

Deforestation disrupts the natural balance of ecosystems, which can lead to an increase in extreme weather events. The removal of trees can result in poorer soil quality and a lack of plant cover, which increases the likelihood of floods after heavy rainfall and drought conditions in dry spells due to less moisture retention in the soil.

Think of a city with well-planned drainage systems (trees) and one with blocked drains (deforestation). In a storm, the city with trees can manage the water better, while the city without them will flood because there's nothing to absorb the water.

Recall that plants need carbon dioxide for photosynthesis. Fewer trees would mean that less carbon dioxide will be used up resulting in its increased amount in the atmosphere. This will lead to global warming as carbon dioxide traps the heat rays reflected by the earth.

Photosynthesis is the process by which plants take in carbon dioxide and convert it into oxygen and glucose. When deforestation occurs, there are fewer plants available to process carbon dioxide, which causes an increase in this gas's levels in the atmosphere. This contributes to global warming as the excess carbon dioxide causes more heat to be trapped in the earth's atmosphere.

Imagine a room full of people breathing out carbon dioxide. If the windows (trees) are closed, the room will get stuffy and hot. It’s similar to how the Earth feels hotter when trees are removed—more carbon dioxide means a warmer planet.

Deforestation is a major cause which leads to the change in soil properties. Physical properties of the soil get affected by plantation and vegetation. Fewer trees result in more soil erosion.

The roots of trees help hold soil in place, preventing erosion. When trees are taken away, soil can be easily washed away by rain, leading to loss of fertile land and changes in soil composition. This erosion can also cause siltation in rivers and negatively impact water quality, fish habitats, and agricultural productivity.

Consider a covered cake versus one that is exposed—without the frosting (trees), the cake (soil) crumbles easily. Just like losing the outer layer makes the cake susceptible to damage, deforestation makes soil vulnerable to erosion.

Removal of the top layer of the soil exposes the lower, hard and rocky layers. This soil has less humus and is less fertile. Gradually the fertile land gets converted into deserts. It is called desertification.

Desertification occurs when fertile land is transformed into desert-like conditions due to various factors, including deforestation. The uppermost soil, rich in nutrients (humus), is removed, leaving behind less fertile layers that are not suitable for plant growth. Over time, this can lead to ecosystems that can no longer support agriculture or wildlife.

Think of a garden that is cared for versus one that is neglected. The cared-for garden thrives with flowers and vegetables, while the neglected one becomes barren and dry. Deforestation neglects the land, leading to its decline—just like a garden without care.

Deforestation also leads to a decrease in the water holding capacity of the soil. The movement of water from the soil surface into the ground (infiltration rate) is reduced.

Healthy forests help the soil retain moisture by providing shade and preventing evaporation. When forests are removed, the soil becomes dry and its ability to soak up water decreases. This not only leads to surface runoff and increased flooding risk but also reduces the amount of water that can be stored underground for future use.

Consider a kitchen sponge—when it's dry, it can't hold much water. But when it's wet, it can hold a lot more. Similarly, soil needs trees to retain water; without them, the soil dries out and can't absorb rain effectively.

Animal life is also affected by deforestation. How? List the points and discuss them in your class.

Deforestation significantly impacts animal habitats, leading to a loss of shelter and food sources for wildlife. Species that depend on trees for nesting, feeding, and breeding may face extinction as their homes are destroyed and fragmented. Additionally, the social structures of animal populations can deteriorate, leading to increased competition and decreased survival rates.

Think of a neighborhood being bulldozed to build a mall. The families in those homes (wildlife) would have nowhere to go, leading to distress, loss, and displacement. Animals experience similar hardships when their forests are removed.

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