Question

Difficulty: MediumMethods and Techniques of Environmental Conservation

Match each environmental conservation technique listed on the left with its primary operational objective or environmental management function on the right.

  • TerracingMitigation of surface runoff and soil erosion on steep, hilly slopes by breaking continuous slope length
  • Taungya systemIntegration of temporary food crop farming with tree cultivation to re-establish degraded forest cover
  • Effluent treatmentNeutralization and purification of industrial liquid waste prior to discharge into aquatic ecosystems
  • ShelterbeltsEstablishment of dense tree rows perpendicular to prevailing winds to arrest desert encroachment and wind deflation

Answer

Terracing matches with mitigating surface runoff and soil erosion on steep slopes; Taungya system matches with integrating temporary crop farming with tree cultivation; Effluent treatment matches with neutralizing and purifying industrial wastewater before aquatic discharge; and Shelterbelts match with establishing tree rows to arrest desert encroachment and wind deflation.
Each technique targets a specific environmental problem: terracing combats water erosion on steep gradients by altering slope structure; the Taungya system promotes reforestation alongside temporary food production; effluent treatment purifies industrial liquid waste to protect water bodies; and shelterbelts function as windbreaks to halt desert encroachment in arid zones.

Step-by-Step Solution

1
Analyze mechanical slope conservation techniques.
Terracing constructs step-like benches across hillside gradients, effectively shortening the slope length and reducing surface runoff momentum.
This directly targets water-driven soil erosion on hilly agricultural terrains.
2
Evaluate integrated forest management strategies.
The Taungya system combines food crop farming with forestry plantation development during the early growth phase of young trees.
It aids in cost-effective afforestation while providing temporary land access for rural farmers.
3
Examine industrial pollution abatement measures.
Effluent treatment processes chemical and manufacturing wastewater to lower chemical oxygen demand (COD) and remove toxins.
This prevents severe water pollution and protects downstream aquatic organisms.
4
Identify biological measures for dryland wind erosion control.
Shelterbelts consist of rows of tall trees planted at right angles to wind currents in dry regions.
They disrupt wind energy, reducing soil detachment and stabilizing desert margins.

Key Concept

Classification and application of mechanical, biological, agroforestry, and industrial environmental conservation methods
Estimated Time:1m 30s
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