PPSCFPSCNTSPakistan govt jobs
- Subject
- Forestry Mcqsforestry-mcqs
- Published
- 24 May 2024
- Last updated
- 28 May 2026
Explanation
Windbreaks function by baffling and mixing the air when it strikes the barrier (A), generating turbulence that diminishes wind energy and velocity (B), and maintaining this mixing as a pressure gradient forms, allowing air to leak through or flow over the windbreak (C). Therefore, all these processes collectively explain how windbreaks work, making option D correct.
More Forestry Mcqs
Practice related questions from the same subject.
- 1.What do windbreaks or shelterbelts typically encompass?
- 2.What factors determine the type of windbreak used?
- 3.What is the optimal crown density percentage for tall rows when low-profile shrubs and rows have a full 100% crown density in an effective windbreak design?
- 4.In Pakistan, due to the limited size of agricultural fields, windbreaks typically consist of 2 or 3 rows. The protective influence of these windbreaks generally extends approximately 12 times the height downwind and _____ times the height upwind. What is the upwind distance factor?
- 5.Which crown density, when compared to a 50% density windbreak, results in a less effective windbreak than one with either 50% or 100% density?
- 6.How does the influence on crop yields manifest?
- 7.Once the windbreak has been correctly designed and implemented, which management aspects should the farmer prioritize?
- 8.At what altitude above sea level is the oldest known Bristlecone Pine (Pinus longaeva) located on the northeast slope in Nevada, USA?
Subcategories
- AGRO FORESTRY
- Afforestation Method
- Afforestation Techniques
- Agro-forestry and social forestry's
- Associated Concepts in Forestry
- Biodiversity
- Ecology and General Silviculture
- Forest Classifications
- Forest Management
- Forest Mensuration
- Forest Nursery Techniques
- Forest Operations
- Forest Protection
- Forest Types and Geographical Distribution
- Forestry Environment
- Forestry MISCELLANEOUS
- Forestry Situation in Pakistan
- Importance of Trees
- Landscape Planning
- Laws and Policies
- Ornamental Plants
- Pollution
- Population Biotic Community
- Protected Areas of Pakistan
- Research and Education in Forestry
- Social Forestry
- Soil Erosion and Conservation
- Soils and Topography
- Sustained Yield Regulations
- Tending Of Forest Crops
- Tree Morphology
- Trees on NON-Forest Areas
- Utilization of Forest Products
- Valuation of Forest Crops
- Watershed and Range Management
- Wildlife and its Management
- Windbreaks - Shelter belts
- World of Trees