碩士 / 國立臺灣海洋大學 / 河海工程學系 / 106 / Taiwan is surrounded by sea, and the plain area is small. With the increase of population, the demand for land development increases so much that the conditions of land development in the inland plain area have reached saturation. In addition to the opening of coastal defense in recent years, coastal zone (shore land area and nearshore area) has become an indispensable space. It makes the use of coastal zone more diverse. In particular, marine area is more concerned when national spatial land is developed in the future.
The prevention of coastal disaster is extremely important under the concept of sustainable development and integrated coastal zone management. In the past, the risk assessment of marine area has focused on single disaster or single type of use behavior in the domestic and foreign countries. This study is adopted the operational definition of disaster risk of UNDRO in 1979 and considers the overall use and the environment in nearshore area. In order to highlight the difference of risk level caused by the difference use in nearshore area, 200m x 200m digital grids are used to evaluate the risk level of hazard and vulnerability in nearshore area of Taiwan.
This study explores risk level caused by existing legal use when the typhoon which marine area of Taiwan often faces comes. It is expected that the resources and utilization of marine area can achieve the goal of sustainable development. Therefore, the selection of vulnerability indicators is based on the connotation of sustainable development: social, economic, environmental, and add the resilience as marine economic scale, environmental sensitive area, marine geology, marine depth, and offshore distance. Pareto Ranking Method and Entropy Method are adopted to establish the vulnerability index rank. Finally, this study used risk matrix to combine the level of hazard and vulnerability, and the geographic information system (GIS) is used to display the risk map of coastal area. Finally, the local risk assessment model of hazard and vulnerability in the coastal area is established.
From the results of risk assessment in nearshore area, because the disaster potential caused by typhoon waves during the 100-year return period, some of nearshore areas have higher risk levels under the effect of typhoon waves during the 100-year return period. The risk levels in nearshore areas of Ilan and Hualien are high due to the larger impact of typhoon waves, the multi-use that its economic scale is large with compared to a single use, and the harsh environment in nearshore areas of Ilan and Hualien.
In recently, the “Marine Resource Zones” of “National Land Spatial Planning Act” proposed by Construction and Planning Agency Ministry of the Interior in 2016 just considers the compatibility or exclusiveness of the existing legal use of marine area and doesn’t take into account the factors such as the marine environment and risk level. Therefore, the results of this study that risk level of nearshore area could be provided as the base for designation of Marine Resource Zones in the future, and proposes new plans for the designation condition of Marine Resource Zones. It could be provided the central government agency with reference for the planning and management of national spatial land.
| Identifer | oai:union.ndltd.org:TW/106NTOU5192010 |
| Date | January 2018 |
| Creators | Huang, Chi-Wen, 黃琦紋 |
| Contributors | Chien, Lien-Kwei, 簡連貴 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 152 |
Page generated in 0.0086 seconds