The best method to prevent flood is
20232024
The best method to prevent flood is
Answer: B. afforestation — CONCEPTFlood control at the catchment scale focuses on slowing surface runoff, increasing infiltration, and reducing the rapid concentration of rainwater in…
- A.
grazing
- B.
afforestation
- C.
deforestation
- D.
More than one of the above
- E.
None of the above
Attempted by 2 students.
Show answer & explanation
Correct answer: B
CONCEPT
Flood control at the catchment scale focuses on slowing surface runoff, increasing infiltration, and reducing the rapid concentration of rainwater in streams.
Vegetation affects this process through canopy interception, leaf litter, soil structure, and roots that bind the ground.
APPLICATION
Afforestation establishes tree cover on land that lacks a forest canopy.
The canopy and leaf litter intercept rainfall and delay the movement of water across the surface.
Roots stabilize soil and improve pathways for infiltration, so less rainwater becomes rapid surface runoff.
CROSS-CHECK / CONTRAST
Grazing is a land use rather than a flood-control measure; when intensive, it can reduce protective ground cover and compact soil.
Deforestation removes the canopy, litter, and roots that otherwise help moderate runoff and erosion.
The set-level choices do not fit because only one listed process directly increases protective tree cover.
Result: Therefore, among the offered choices, afforestation is the best method for reducing flood risk.