Table 1. T-RFLP profile-based diversity estimates for the rhizomes of Alpinia officinarum Hance plants at various ages.

	Shannon diversity index (HhaI)	Shannon diversity index (MspI)	Shannon's evenness (HhaI)	Shannon's evenness (MspI)	Berger-Parker's index (HhaI)	Berger-Parker's index (MspI)
LT-4-RZ	1.78±0.06a	1.66±0.04d	0.42±0.02a	0.41±0.03a	0.54±0.01d	0.57±0.02d
LT-3-RZ	2.13±0.01c	2.21±0.02b	0.65±0.01c	0.70±0.02b	0.29±0.01b	0.31±0.02b
LT-2-RZ	1.94±0.07b	2.05±0.05c	0.76±0.01d	0.78±0.01c	0.31±0.01a	0.33±0.01b
LT-1-RZ	1.49±0.03a	1.74±0.03a	0.52±0.01b	0.64±0.02b	0.58±0.01c	0.38±0.00c

The values were calculated separately based on the data from measurements of three independent rhizome samples for each year and are expressed as the mean ± SD. The letters in each lane indicate significant differences (p<0.05).