I) Vegetation on each side is as follows. (a) Ecological variation by the distance from the estuary was little recognized at both sides. (b) Imperata cylindrica has the highest dominance ratio, and Equisetum ramosissimum, Artemisia japonica, Arundinera hirta, Sporobolus elongatus, Lespedeza cuneata, and Phragmites japonica, are in due order. (c) Grass types on both sides are Imperata type (60-70%), weed grass type (25-35%) and other grass type (5%). (d) Imperata grows at all grasslands and the grassland may be induced into Imperata type in general, if main weed grasses are cut over. Imperata has the highest frequency ratio, and Equisetum, Arundinera, Sporobolus, Artemisia, Killinga brevifolia, var. leiolepis, Lespedeza and Erigeron canadensis are in due order. (e) PH of soil of the inside grassland is lower than that of the outside. (f) Number of grass species on the inside grassland, is more than on the outside grassland. (g) Phramites japonica and Equisetum grow prosperously on the inside grassland, and Artemisia on the outside. II) Grass yield on each side is as follows. (a) As the meadow, the outside glassland is superior to the inside grassland. From the standard grass yield of Japan, this grassland may be ranked in middle class. (b) It is common defect in natural grassland that yield of Leguminosae is scanty. (c) Main inedidle grass species on both sides are Phragmites japonica, Artemisia, Erigeron, Equisetum, and Themeda japonica. (d) Poisonous grass species is not found on both sides. (e) Grass species that grow commonly at all plots, are Imperata, Arundinera, Sporobolus and Artemisia. Yield of Imperata is the highest, and Equisetu, Artemisia, Arundinera, Sporobolus are in due order. III) Amount of leaves in arborescent Leguminosae is as follows. Lespedeza bicolor is the first in amount of leaves, Lespedeza cuneata the second, and Indigofera pseudotinctoria the third. Lespedeza cuneata is the first in percentage of leaves, Lespedeza bicolar and Indigofera are in due order.
