16/09/2025
Hi, Malaya!
Fellow students,
Let's go back to basics 🌳🐝🛢️🌍
Plant more trees, respect our nature
And Improve our waste management.
Make it an advocacy please! Forests control floods by intercepting and slowing rainwater with their canopy, reducing direct impact on the ground. Their root systems help water infiltrate the soil, decreasing surface runoff and preventing erosion. Trees also absorb and store large amounts of water through evapotranspiration, further reducing the volume of water available to cause floods.
How Forests Intercept and Absorb Water
Canopy Interception:
A forest's leaves and branches intercept rainfall, slowing its descent to the ground and spreading the storm's impact over a longer period.
Soil Infiltration:
The intricate network of tree roots creates channels in the soil, improving its structure and allowing rainwater to soak deep into the ground rather than pooling on the surface.
Evapotranspiration:
Trees take up water from the soil and release it back into the atmosphere through their leaves, a process called evapotranspiration.
How Forests Reduce Runoff and Prevent Erosion
Root Anchorage:
Tree roots act like anchors, binding soil particles together and preventing them from being washed away during heavy rainfall.
Ground Protection:
Fallen leaves and the forest floor cover create a protective layer that shields the soil from the erosive force of raindrops.
Slowing Water Flow:
Trees along riverbanks and on floodplains can act as natural barriers, holding back and slowing the flow of floodwaters.
The Overall Effect
By performing these functions, forests reduce the speed and volume of water runoff, which helps to prevent streams and rivers from becoming overwhelmed. This significantly lessens the risk of both flash floods and river floods. Forests are considered a natural, effective defense against flooding, a benefit that becomes even more important with the increasing risks posed by climate change.
Restoration of urban forests to reduce flood susceptibility: A starting point - ScienceDirect
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