Evaluation of Coastal Protection by Coastal Wetlands ─ A Case Study of the Taiwan Changhua Coastal Wetland

• Main Authors: Chun-Yueh Lin, 林君嶽
• Other Authors: Yu-Lan Chien
• Format: Others
• Language: zh-TW
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/73008134222373894299

碩士 === 國立臺北大學 === 自然資源與環境管理研究所 === 101 === The Changhua Coastline had suffered from coastal erosion and overtopping which had caused great damage to the coastal neighborhood and society. In order to prevent from these disasters, the government had spent tons of money and built 93 km long seawall. These evidences shows that the Changhua coast had been a vulnerable place where needed to be protected and restored. Even though people had known the Changhua coastal wetland had been such a weak and vulnerable place, some still intend to overdevelop and degrade this area for economic returns mostly due to unrecognizing the values of ecosystem services provided by this coastal wetland. This study thus aims to evaluate the economic benefits of protecting the coastal area from coastline retreating and overbank flood. The averting expenditure of imposing wave energy dissipating concrete block and preventative expenditure to build seawall are used to estimate the economic benefits from the coastal wetland, and it adds up with the value between 8,581,490~12,094,701 NT dollars per year.