Sample size is proportional to the number of population is given a large landscape level has been selected as an example. And a small tree layer is selected as the minimum.
The sample size is proportional to the population. A method requiring a large stratum were selected as examples. And a small stratum was selected as a sample.
The sample size is proportional to the population. A method for stratified with large was selected as greatly. And the stratum with small was selected as at least.