栗原川の支流谷戸岡沢の植物相とランドスケープに関する考察

概要

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In Yatooka-sawa which planned the bank protection works, we investigated the flora and growth environment of Anemone f Zaccida. In the entire investigation ground, 75 family, 140 genus, and 166 species of plants were recorded. From the location and the species composition, original vegetation of the investigation ground was guessed to be Orixo-Zelkovetum serratae. In the natural bank part, the naturalization rate is low, and there are many kind of plants. In the concrete bank protection part, the naturalization rate was high, and there are a little kind of plants because only a specific plant was temporarily grew thickly. It was confirmed that the location was necessary for some brightness, moist in the soil, and not covering of the upper layer with a high stalk herbs about the growth environment of Anemone. f Zaccida. Hence the valley part where were formed Orixo-Zelkovetum serratae can be corresponded as such a location. Natural bank part of Yatooka-sawa where is a space to which Anemone flaccida and various plants can be grown, and formed Oyixo Zelkovetum sey ratae, is very valuable in the point of variety of the landscape in Sannomiya district. In this research, we proposed that left bank was made a concrete bank protection for a dangerous of landslide, right bank was led to OrixoZelkovetum serratae that is an original vegetation in Yatooka-sawa. It is necessary for management indicator which corresponds to each location.