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| Region | Sampling | Assignment (%) a | |
|---|---|---|---|
| Eastern cluster | Western cluster | ||
| East | Plantation | 92.5 | 7.5 |
| Natural stands | 85.4 | 14.6 | |
| West | Plantation | 3.0 | 97.0 |
| Natural stands | 0.4 | 99.6 |
aCluster assignment is significantly different between plantations and natural stands (t-test p-value<10–7).
