Abstract
Now restoration and creation about a community of riparian vegetation is done for a biodiversity conservation. The large sized riparian vegetation like Phragmites australis (Cav.） Trin. ex Steud. and Typha latifolia Linn. attract attention for objective community, but they have strong propagative power, which is fair that cover surface of the water make into a bush. And labor becomes necessary for maintain the reasonable scale about riparian vegetation community. I take up and investigate Carex thunbergii Steud. that middle size riparian vegetation as one of a solution of it. A result is as follows. 1)The root system of Carex tunbergii concentrate in the surface layer about 10cm and makes rootmat. 2)The maximum depth of the water for Carex tunbergii is about 20cm. 3)Cutting down management in summer season expect hold down height of a plant, and maintain a green of plant in late autumn. By the above, Carex tunbergii is suitable for small-middle scale riparian revegetation for the purpose of scenery.
