Table 1. Linear mixed model analysis (F-values) of ramet and bud densities, total biomass, and biomass allocation.

Variable	Elevation (E)	Sampling period (S)	E × S
Ramet density	11.06***	25.35***	12.39***
Bud density	20.07***	24.61***	10.49***
Total biomass	17.66***	2.11ns	1.71ns
Shoot mass fraction	15.30***	53.92***	4.57**
Root mass fraction	10.41***	52.94***	5.00***
d.f.	2	3	6

Elevation and sampling period were included as fixed factors, and site was included as a random factor.

^***P < 0.001, ^**P < 0.01^{, *}P < 0.05; ^nsP > 0.05.