期刊
SUSTAINABILITY
卷 10, 期 4, 页码 -出版社
MDPI
DOI: 10.3390/su10041045
关键词
mangrove landfill; land subsidence; sea-level rise; ocean tides; numerical model
资金
- MEXT/JSPS KAKENHI [16KK0121]
- Environment Research and Technology Development Fund of Ministry of the Environment, Japan [S-14]
A mangrove ecosystem is an important option in Ecosystem based Disaster Risk Reduction (Eco-DRR). The effectiveness of an artificial mangrove landfill in reducing tidal amplitudes was studied by performing a coupled numerical model that simulated wave propagation and soil consolidation. The constructed model simulated the propagation of tide over an artificial landfill that was subjected to land subsidence, sea-level rise, vegetation growth, and sediment deposition. A case study analysis confirmed that the tidal amplitudes are reduced if the initial elevation of the landfill is appropriately considered to achieve an equilibrium state of the landfill over its lifetime. Sediment deposition may be the only dependable source to sustain the surface elevation of a mangrove with relative sea-level rise. Sediment deposition is important to promote vegetation growth, which in turn contributes to sedimentation by enhancing a tranquil hydrodynamic environment. An insufficient initial elevation of the landfill will result in less effective protection against tidal propagation after it substantially subsides.
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