Question:
In shelter belt, tree species is used to protect _______ of it's height.
In shelter belt, tree species is used to protect _______ of it's height.
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The protective zone of a shelterbelt is mathematically expressed in terms of its height (\(H\)). Significant wind reduction occurs within \(15H\) to \(20H\) on the leeward side.
Updated On: Jul 10, 2026
- 50-55 times
- 30-35 times
- 10-15 times
- About 5 times
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Verified By Collegedunia
The Correct Option is B
Solution and Explanation
Step 1: Understanding the Concept:
A shelterbelt is a protective barrier of trees and shrubs designed to reduce wind speed, limit soil erosion, and protect crops or livestock from adverse microclimatic effects.
Step 2: Detailed Explanation:
- The zone of wind speed reduction provided by a shelterbelt is directly proportional to its height (\(H\)).
- A dense, multi-row shelterbelt reduces wind velocity on both sides:
1. On the windward (upwind) side, protection extends up to \(5\text{ to }10\) times the height of the trees (\(5H - 10H\)).
2. On the leeward (downwind) side, microclimatic protection can extend up to \(30\text{ to }35\) times the height (\(30H - 35H\)).
- This wide range of influence makes shelterbelts highly effective for landscape-level conservation.
Step 3: Final Answer:
The maximum protective influence of a shelterbelt is up to 30-35 times its height.
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