The moisture content and water-holding capacity of different provenances of Dendrocalamopsis oldhami in Yong'an and Longhai were studied.The results were as follows:The biomass was positively corrected with water-holding capacity in different provenances.With the biomass increasing,the highest increment of water-holding capacity was in the canopy,the second was in the vegetation layer under canopy and litter layer,and that in the underground parts was the lowest.The biomass and water-holding capacity in can...