Abstract
At Daiichi-funt River in Hiroshima, we investigated early herbaceous succession of ecotone vegetation on river restoration. We surveyed species composition, coverage and vegetation height. We also examine life-form composition, degree of succession and species diversity of the community, respectively. Following results were obtained. 1) The stands on ecotone vegetation of 36 quadrates were divided into 7 groups by their species composition. These groups were related with completion time of river restoration by detrended coirespondence analysis. 2) Although succession was advanced, species diversity and ratio of naturalized species hardly became high. The ecotone succession is expected to remain stagnant for a long time. 3) The palm fiber roll on riversidedge was decomposed in the two-half years after construction and new habitat for annual herb has appeared. So, the community of ecotone vegetation has contained some annual herbs.
