Tropical peat coast erosion by degradation of the mangrove area and auto-rehabilitation process of the substitute tidal flat ecosystem

2016 Fiscal Year Final Research Report

• Project/Area Number: 26303015
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 海外学術
• Research Field: Civil and environmental engineering
• Research Institution: Yamaguchi University
• Principal Investigator: Yamamoto Koichi 山口大学, 創成科学研究科, 准教授 (50355955)
• Co-Investigator(Kenkyū-buntansha): 鈴木 素之 山口大学, 理工学研究科, 准教授 (00304494) ; 赤松 良久 山口大学, 理工学研究科, 准教授 (30448584) ; 神野 有生 山口大学, 理工学研究科, 助教 (30583760)
• Research Collaborator: Haidar Muhammad BIG ; Sutikno Sigit リアウ大学 ; Sandhyavitri Ari リアウ大学 ; Hardi Mu リアウ大学 ; Satibi Syawal リアウ大学 ; Basir Noerdin ブンカリス高専
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 泥炭地 / インドネシア / リアウ州 / 海岸浸食 / 地下水管理

Outline of Final Research Achievements

Through field survey in Bungalis Island, Indonesia, we observed the peatland collapse phenomenon as tropical peatland for the first time in the world. We also confirmed that the erosion rate of the peatlands will be 160 ha per year in Riau Province. Regarding the peatland collapse phenomenon, we clarified that the control depends greatly on the control of the groundwater level and proposed a countermeasure for that.
Debris that flowed out to the sea area due to the peatland collapse revealed that part of the mangrove is formed by making sandbars on the coast and the peat is trapped in the mangrove ground and carbon is stored. Carbon stored by the newly formed mangrove was estimated to be 2500 tC / km 2 / year as a new photosynthetic component.

Free Research Field

地盤工学，海岸工学，環境工学