Introduction of Coastal Disaster Prevention Forest with tidal embankment--An example of Enshu nada, Shizuoka Prefecture--

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  • 防潮堤の機能を備えた海岸防災林（遠州灘を事例として）の造成事例
  • ボウチョウテイ ノ キノウ オ ソナエタ カイガン ボウサイリン(エンシュウナダ オ ジレイ ト シテ)ノ ゾウセイ ジレイ

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<p>After the Great East Japan Earthquake in March 2011, countermeasures against earthquakes and tsunamis related to the Nankai Trough in southwestern Japan became an urgent issue, and Shizuoka Prefecture has been working on the construction of “the Fujinokuni Forest Seawall” since 2013. On the other hand, in the coastal area of Hamamatsu City, a coastal disaster prevention forest with a seawall function based on the CSG method has been developed, and was almost completed in March 2021. The growth of trees planted on the embankment of the seawall is affected by various factors, and this paper introduces a case study of coastal disaster prevention forest development, focusing on the wind environment around the seawall, selected tree species, and physical characteristics of the embankment. It was introduced that the wind blowing from the sea side around the seawall generates a circulating current when it blows over the top of the embankment and down to the land side, that the magnitude of the circulating current changes when the wind direction changes, that the growth of planted trees varies depending on the species, and that there are several patterns in the vertical distribution of the soil softness of the embankment. In the future, it is expected that new greening technology will be fostered to cope with the new conditions of creating coastal disaster prevention forests on tidal embankment.</p>

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