Table 6. Spearman rank correlation matrix (r_s) among biodiversity indices, above-ground biomass and environmental factors.

2009	R	H′	Ab	Ele	Sub	Smc	Sl	Sdw	Sds
R	1.00
H′	0.96**	1.00
Ab	0.24*	0.31**	1.00
Ele	0.67**	0.64**	0.32**	1.00
Sub	0.26*	0.23	−0.17	0.18	1.00
Smc	−0.12	−0.11	0.41**	−0.23	−0.17	1.00
Sl	0.22	0.17	−0.06	0.04	0.06	0.22	1.00
Sdw	−0.67**	−0.64**	−0.32**	−1.00**	−0.18	0.23	−0.04	1.00
Sds	−0.60**	−0.58**	−0.46**	−0.65**	−0.16	0.07	−0.04	0.65**	1.00

*P<0.05,

**P<0.01.

R: species richness in plots, H: Shannon-Wiener Index, Ab: above-ground biomass, Ele: elevation, Sub: substrates, Smc: soil moisture content, Sl: slope, Sdw: duration of submergence in previous winter, Sds: duration of summer submergence.