3種湿性植物の地下茎の発達に及ぼす水位の影響

概要

論文の詳細を見る
As the first step in the analysis on the vegetational zonation of three hygrophytes, Zizania latifolia, Phragmites australis and Miscanthus sacchariflorus, a year-long culture experiment was run twice in 1974 and in 1975. To investigate the effects of water levels on the development of new rhizomes, the following three plots with different water levels were set up : -15 cm (dry plot), -5 cm (wet plot) and +5 cm (fiooded plot) above the soil. M. sacchariflorus in the flooded plot developed many small new rhizomes in contrast with the few but larger ones which developed in the wet or dry plot. The small sized rhizomes failed to sprout buds in the following season. The maximum ratios of rhizome/total biomass at the end of the growing season were attained in the dry plot for Z. latifolia and M. sacchariflerus. The ventilation coefficient expressing the oxygen diffusion capacity through shoots was highest in Z. latifolia, followed by P. australis and then by M. sacchariflorus. The coefficient increased adaptively with soil moisture in all three species.
日本生態学会の論文
1981-12-30