In multilevel classification system, Level IV classification is suitable for
- ALandsat MSS images
- BHigh-altitude aerial photographs
- CLow-altitude aerial photographsCorrect
- DMedium-altitude aerial photographs
Solution
Concept
In Anderson's multilevel land use classification, a higher level needs more detail, so it needs a larger scale and lower-altitude data.
Step-by-step solution
1. Anderson (USGS) land use classification has 4 levels. 2. Level I: Landsat MSS type satellite data. 3. Level II: High-altitude aerial photos (scale 1:80,000 or smaller). 4. Level III: Medium-altitude aerial photos (about 1:20,000 to 1:80,000). 5. Level IV: Low-altitude aerial photos (scale larger than 1:20,000). 6. So Level IV suits low-altitude aerial photographs.
Explanation
Each higher level in the multilevel system needs finer detail. Level IV is the most detailed level, so it needs large-scale, low-altitude aerial photographs. Satellite and high-altitude data suit only Levels I and II.
Why the other options are wrong
A: Landsat MSS suits Level I. B: High-altitude photos suit Level II. D: Medium-altitude photos suit Level III.
Shortcut
Level I, II, III, IV = Satellite, High, Medium, Low altitude.
Common mistake
Students reverse the order and think Level IV means the highest altitude.
Correct answer: C) Low-altitude aerial photographs