Characteristics and evaluation of coastal erosion vulnerability of typical coast on Hainan Island
Coastal erosion vulnerability assessment is widely used to assess the loss degree of coastal zone caused by erosion, and plays an important role in coastal natural resources protection, planning, management and decision-making. Based on the natural and social characteristics of the east coast of Qio...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2022-12-01
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| Series: | Frontiers in Marine Science |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fmars.2022.1061769/full |
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| author | GuoWei Fu Chao Cao Chao Cao Chao Cao KaiZhe Fu YanWei Song Kun Yuan XiaoMing Wan ZiAng Zhu ZhaoFan Wang ZanHui Huang |
| author_facet | GuoWei Fu Chao Cao Chao Cao Chao Cao KaiZhe Fu YanWei Song Kun Yuan XiaoMing Wan ZiAng Zhu ZhaoFan Wang ZanHui Huang |
| author_sort | GuoWei Fu |
| collection | DOAJ |
| description | Coastal erosion vulnerability assessment is widely used to assess the loss degree of coastal zone caused by erosion, and plays an important role in coastal natural resources protection, planning, management and decision-making. Based on the natural and social characteristics of the east coast of Qiongdong and the coastal erosion vulnerability index (CVI) method, this study selected 8 assessment indicators, such as shoreline change rate (U1). The Delphi method and the entropy weight method were used to calculate the comprehensive index weight, combined with CVI method and geographic information system (GIS) technology, to quantitatively evaluate the temporal and spatial distribution characteristics of typical coastal erosion vulnerability such as coral reefs in the east of Hainan Island. The study area was divided into 5 grades: very low (31%), low (10%), moderate (28%), high (24%) and high vulnerability (7%), and the overall performance was moderate erosion vulnerability. The research showed that the interannual downward rate erosion of beach (U3) and the rate of change of the isobath (U2) of the beach were the main controlling factors affecting the vulnerability of coastal erosion in the study area, and the coastal dynamic factor had a greater impact than the other two factors. As a natural barrier, the coral reefs in the study area had good wave absorption and energy reduction, and the coral reef coasts showed low coastal erosion vulnerability, due to the complex hydrodynamic characteristics, estuary coasts is the most vulnerable areas. The verification results of the ROC-AUC method showed that the accuracy of erosion vulnerability was 68.9%, which provided an important reference for the ecological restoration of tropical coral reef biological coasts and the development and management of the Hainan Qiongdong coastal zone. |
| first_indexed | 2024-04-11T12:22:10Z |
| format | Article |
| id | doaj.art-059c91668d564062a7ef82bcc57e4dd5 |
| institution | Directory Open Access Journal |
| issn | 2296-7745 |
| language | English |
| last_indexed | 2024-04-11T12:22:10Z |
| publishDate | 2022-12-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Marine Science |
| spelling | doaj.art-059c91668d564062a7ef82bcc57e4dd52022-12-22T04:24:04ZengFrontiers Media S.A.Frontiers in Marine Science2296-77452022-12-01910.3389/fmars.2022.10617691061769Characteristics and evaluation of coastal erosion vulnerability of typical coast on Hainan IslandGuoWei Fu0Chao Cao1Chao Cao2Chao Cao3KaiZhe Fu4YanWei Song5Kun Yuan6XiaoMing Wan7ZiAng Zhu8ZhaoFan Wang9ZanHui Huang10Haikou Research Center of Marine Geology, China Geological Survey, Haikou, ChinaThird Institute of Oceanography, Ministry of Natural Resources, Xiamen, ChinaFujian Provincial Key Laboratory of Marine Ecological Conservation and Restoration, Xiamen, ChinaKey Laboratory of Marine Ecological Conservation and Restoration, Ministry of Natural Resources, Xiamen, ChinaHaikou Research Center of Marine Geology, China Geological Survey, Haikou, ChinaHaikou Research Center of Marine Geology, China Geological Survey, Haikou, ChinaHaikou Research Center of Marine Geology, China Geological Survey, Haikou, ChinaHaikou Research Center of Marine Geology, China Geological Survey, Haikou, ChinaHaikou Research Center of Marine Geology, China Geological Survey, Haikou, ChinaHaikou Research Center of Marine Geology, China Geological Survey, Haikou, ChinaHaikou Research Center of Marine Geology, China Geological Survey, Haikou, ChinaCoastal erosion vulnerability assessment is widely used to assess the loss degree of coastal zone caused by erosion, and plays an important role in coastal natural resources protection, planning, management and decision-making. Based on the natural and social characteristics of the east coast of Qiongdong and the coastal erosion vulnerability index (CVI) method, this study selected 8 assessment indicators, such as shoreline change rate (U1). The Delphi method and the entropy weight method were used to calculate the comprehensive index weight, combined with CVI method and geographic information system (GIS) technology, to quantitatively evaluate the temporal and spatial distribution characteristics of typical coastal erosion vulnerability such as coral reefs in the east of Hainan Island. The study area was divided into 5 grades: very low (31%), low (10%), moderate (28%), high (24%) and high vulnerability (7%), and the overall performance was moderate erosion vulnerability. The research showed that the interannual downward rate erosion of beach (U3) and the rate of change of the isobath (U2) of the beach were the main controlling factors affecting the vulnerability of coastal erosion in the study area, and the coastal dynamic factor had a greater impact than the other two factors. As a natural barrier, the coral reefs in the study area had good wave absorption and energy reduction, and the coral reef coasts showed low coastal erosion vulnerability, due to the complex hydrodynamic characteristics, estuary coasts is the most vulnerable areas. The verification results of the ROC-AUC method showed that the accuracy of erosion vulnerability was 68.9%, which provided an important reference for the ecological restoration of tropical coral reef biological coasts and the development and management of the Hainan Qiongdong coastal zone.https://www.frontiersin.org/articles/10.3389/fmars.2022.1061769/fullHainan Islandcoral reef coasthuman activitiesindex methodcoastal erosion vulnerability |
| spellingShingle | GuoWei Fu Chao Cao Chao Cao Chao Cao KaiZhe Fu YanWei Song Kun Yuan XiaoMing Wan ZiAng Zhu ZhaoFan Wang ZanHui Huang Characteristics and evaluation of coastal erosion vulnerability of typical coast on Hainan Island Frontiers in Marine Science Hainan Island coral reef coast human activities index method coastal erosion vulnerability |
| title | Characteristics and evaluation of coastal erosion vulnerability of typical coast on Hainan Island |
| title_full | Characteristics and evaluation of coastal erosion vulnerability of typical coast on Hainan Island |
| title_fullStr | Characteristics and evaluation of coastal erosion vulnerability of typical coast on Hainan Island |
| title_full_unstemmed | Characteristics and evaluation of coastal erosion vulnerability of typical coast on Hainan Island |
| title_short | Characteristics and evaluation of coastal erosion vulnerability of typical coast on Hainan Island |
| title_sort | characteristics and evaluation of coastal erosion vulnerability of typical coast on hainan island |
| topic | Hainan Island coral reef coast human activities index method coastal erosion vulnerability |
| url | https://www.frontiersin.org/articles/10.3389/fmars.2022.1061769/full |
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