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2022 Fiscal Year Final Research Report

Tolerance evaluation of broad-leaved teree species and possibility of establishing disaster resilient coastal forest

Research Project

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Project/Area Number 19H02985
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 39070:Landscape science-related
Research InstitutionTokyo City University

Principal Investigator

Yoshizaki Shinji  東京都市大学, 環境学部, 名誉教授 (50318622)

Co-Investigator(Kenkyū-buntansha) 福田 達哉  東京都市大学, 理工学部, 教授 (00432815)
加藤 真司  東京都市大学, 環境学部, 教授 (50523388)
岡 浩平  広島工業大学, 環境学部, 准教授 (80573253)
鈴木 彰  東京都市大学, 理工学部, 講師 (50110797)
Project Period (FY) 2019-04-01 – 2022-03-31
Keywords海岸防災林 / 広葉樹 / 耐陰性 / 自己再生 / 海岸環境耐性 / 防潮土堤 / 飛砂 / 海岸環境適応
Outline of Final Research Achievements

We examined the tolerance of broadleaf trees that can be introduced into coastal disaster prevention forests to the coastal environment and their response to new conditions, such as seawall embankments. The results showed that leaf damage caused by blowing sand promotes salt penetration into leaves, that there are different degrees of shade tolerance among evergreen broadleaf trees, that populations growing in coastal areas show adaptation to coastal environments in terms of leaf stomatal and epidermal cell size, that coastal pine forests regenerate themselves by natural seedlings of pine forests and by epicormics shoot on trunks of evergreen broadleaf trees. Basic data were also obtained the effect of soil hardness and the change of wind conditions on the growth of planted trees within embankments, and on the effects of roots and rhizosphere soils of broadleaf trees on mycorrhizal fungi coexisting with Pinus spp.

Free Research Field

環境緑化工学

Academic Significance and Societal Importance of the Research Achievements

津波に対する抵抗力を増すために、海岸林の前面や林下へ広葉樹を導入する際に重要な、飛砂による葉へのダメージや耐陰性の知見が得られたことは大きな意義がある。沿岸域に生育する個体群には葉の気孔や表皮細胞に海岸環境への適応が認められたことも、学術的価値のある成果である。マツ林の天然更新や広葉樹林の胴吹き更新による自己再生力の発揮が確認されたことは、海岸防災林の将来目標の設定や遷移を把握するうえで貴重である。防潮土堤の土壌硬度や風環境の変化が植栽木の生育へ及ぼす影響、広葉樹の根や根圏土壌がマツ類と共生する菌根菌へ及ぼす影響について基礎データが得られたことも、今後のモニタリングにとって貴重な成果となった。

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Published: 2024-01-30  

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