Case introduction
Sampling survey to the total area of the forest of Heshun county in Shanxi province in year 2000 |
Description: |
We need to take some samples from 2,697,460 image units to investigate (the minimum investigated unit is A TM image) the area of forest coverage of Heshun county in Shanxi province in year 2000, require that the total investigation cost doesn't exceed 100,000 yuan, according to the experience, the standard deviation of each layer unit can be estimated, the base cost of the investigation is approximately 6000 yuan, the average investigated cost of each pixel is 100 yuan. |
Sampling method: |
Stratified sampling |
Objective: |
To estimate the forest area of Heshun county in year 2000 by sampling |
Condition: |
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Request: |
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