Which action would most improve soil water infiltration?

Which action would most improve soil water infiltration?

• A. Maintaining bare soil
• B. Paving
• C. Planting trees and vegetation
• D. Over-compacting soil

Answer: (C)

Vegetation improves soil water infiltration by boosting soil structure and creating pathways for water to move downward. Plant roots grow through the soil, leaving behind channels that stay as macropores and help water infiltrate rather than run off. The organic matter from leaves, roots, and microbial activity binds soil particles into stable aggregates, increasing porosity and creating a crumbly texture that allows water to percolate more easily. Plant cover also protects the soil surface from the impact of raindrops, preventing crust formation that can seal the surface and impede infiltration. In contrast, bare soil is prone to forming a compacted crust after rain, paving creates an impermeable surface, and over-compacting reduces pore space, all of which hinder infiltration. So, planting trees and vegetation best promotes rapid and effective water entry into the soil.

Vegetation improves soil water infiltration by boosting soil structure and creating pathways for water to move downward. Plant roots grow through the soil, leaving behind channels that stay as macropores and help water infiltrate rather than run off. The organic matter from leaves, roots, and microbial activity binds soil particles into stable aggregates, increasing porosity and creating a crumbly texture that allows water to percolate more easily. Plant cover also protects the soil surface from the impact of raindrops, preventing crust formation that can seal the surface and impede infiltration. In contrast, bare soil is prone to forming a compacted crust after rain, paving creates an impermeable surface, and over-compacting reduces pore space, all of which hinder infiltration. So, planting trees and vegetation best promotes rapid and effective water entry into the soil.