What are the impacts of deforestation on the Earth’s oxygen and carbon cycles? Class 9

What are the impacts of deforestation on the Earth’s oxygen and carbon cycles? Class 9

Question 1.

What are the impacts of deforestation on the Earth’s oxygen and carbon cycles? What are the other consequences of deforestation? Class 9

Answer:

Impact on the Carbon Cycle:

1. Trees are natural carbon sinks that absorb CO₂, through photosynthesis.
2. Deforestation stops this absorption and releases stored carbon back as CO₂.
3. This raises atmospheric CO₂ levels, intensifying the greenhouse effect and global warming.
4. Natural carbon sinks get destroyed, disrupting the carbon cycle.

Impact on the Oxygen Cycle:

1. Trees produce oxygen through photosynthesis.
2. Clearing forests means less oxygen is produced and released into the atmosphere.
3. The balance between oxygen production and consumption is disturbed.
4. Less photosynthesis means more CO₂, remains unconverted, further reducing oxygen levels.

Other Consequences of Deforestation:

(a) Reduced Rainfall:

1. Trees release water through transpiration, contributing to local rainfall.
2. Without trees, local rainfall declines making the area drier.

(b) Soil Erosion:

1. Tree roots bind soil together.
2. Without roots, soil becomes loose and is easily washed away, causing loss of fertile topsoil.

(c) Change in Albedo:

1. Deforestation alters surface albedo, changing how much solar radiation is absorbed or reflected, affecting local climate.

(d) Biodiversity Loss:

1. Forests are home to millions of species.
2. Clearing forests destroys habitats, leading to decline in biodiversity and possible extinction of species.