A forest's albedo value approximates:
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Answer: C. 5-10%
Explanation
Forest canopies absorb a high proportion of incoming solar radiation rather than reflecting it. This low reflectance yields a typical forest albedo value of approximately 5 to 10 percent. Dense vegetation traps light energy, distinguishing forests from highly reflective surfaces. Albedo measures the fraction of solar radiation reflected from an Earth surface. Dark green pine and broadleaf canopies have very low albedo compared to snow or sand. Changes in land cover from forests to agriculture significantly alter regional surface energy budgets.
Climate modelers incorporate forest albedo parameters into global temperature simulations. Deforestation increases surface albedo, which can paradoxically induce localized cooling effects. Satellite remote sensing measures forest reflectance to monitor canopy health and density. Option A suggests 1-2%, which is lower than typical natural canopy reflectance values. Option B lists 3-5%, falling slightly short of the standard measured forest albedo range. Option D proposes 20-30%, which describes reflective surfaces like grasslands or dry soil.
- Subject
- Agriculture
- Category
- Forestry
- Topic
- —
- Difficulty
- medium
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