Research Article

Recovery of Vegetation Structure and Species Diversity after Shifting Cultivation in Northwestern Vietnam, with Special Reference to Commercially Valuable Tree Species

Figure 1

Chao’s species number estimation by number of surveyed plots. Percentage of overestimate = (number of estimated species − number of observed species)/number of observed species * 100. This was calculated for corresponding number of samples (sub-plots). OGF is old-growth forest and FS is a 32-year-old fallow stand.
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