Environmental degradation processes and sustainable use of mangrove coastal areas in Southeast Asia

2017 Fiscal Year Final Research Report

• Project/Area Number: 25303016
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 海外学術
• Research Field: Hydraulic engineering
• Research Institution: The University of Tokyo
• Principal Investigator: Sasaki Jun 東京大学, 大学院新領域創成科学研究科, 教授 (50292884)
• Co-Investigator(Kenkyū-buntansha): 鈴木 崇之 横浜国立大学, 大学院都市イノベーション研究院, 准教授 (90397084)
• Research Collaborator: Rasmeemasmuang Thamnoon ; Achiari Hendra ; VAN P. D. Tri
• Project Period (FY): 2013-04-01 – 2018-03-31
• Keywords: マングローブ / 海岸侵食 / 地盤沈下 / 気候変動 / 持続可能性 / EcoDRR / 沿岸環境 / 防災・減災

Outline of Final Research Achievements

We conducted aerial photo analysis, surveying, aerial photographing, wave observation and water quality observation, and questionnaire and interview survey on mangrove marshes in Thailand, Indonesia and Vietnam and examined the conditions for sustainable use of mangrove marshes. From the long-term aerial photograph analysis, we examined the disappearance factors of mangrove and conditions effective for conservation. Evaluation of mangrove restoration project using bamboo fence and revetment showed the effectiveness of enhancing sediment accumulation by sufficient dissipation and human intervention until seedling settlement. In addition, remarkable coastline retreat was found to be affected by changes in sediment supply, relative sea level rise, and illegal mangrove logging, and possible adaptation measures taken by local people and governments were discussed.

Free Research Field

沿岸環境学，海岸工学，環境水工学