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Coastline Change Monitoring by Remote Sensing in Coastal Zone of Bohai Bay in China
Coasts are the zone between the sea and the land, influenced by the dual effects of the exchange of materials between land and sea. It is an important reference for sea and land changes that reflect climate change and human activities. Monitoring shoreline changes has become an important task in the ecological environment protection, economic development of the bay. In this paper, coastline changes, bay area and shoreline characteristics of Bohai Bay in northern China were investigated over a 40-year period using multi-dated Landsat TM/ETM satellite image data from 1975 to 2015. The results show that the total coastline length of Bohai Bay increased by 761 km in the past 40 years, but the bay area showed a decreasing trend, which decreased by 18%; the artificial coastline showed a clear increasing trend year by year, while the natural coastline change was relatively weak and acutely disappeared, More than 95% of the coastline's length was made up of artificial coastline along Bohai Bay; the factors influencing the shoreline change of Bohai Bay had significant temporal heterogeneity, and then the leading factor was the anthropogenic development activities (reclamation engineering and port construction), mainly concentrated in the three key regions of Caofeidian Port, Tianjin Port and Huanghua Port in Bohai Bay. With the expansion of development and exploitation of marine activities, the impact of human activities on the evolution of coastal zone is becoming more and more obvious, according to an analysis of the change of the bay coast and the bay area under the influence of hydrodynamic, sedimentary, and natural evolution environment. The study reveals the characteristics and influencing factors of coastal change in Bohai Bay, which can provide the necessary scientific basis for the development and construction, comprehensive management and coastal environmental protection of the Bohai Bay region.
Coastline Change Monitoring by Remote Sensing in Coastal Zone of Bohai Bay in China
Coasts are the zone between the sea and the land, influenced by the dual effects of the exchange of materials between land and sea. It is an important reference for sea and land changes that reflect climate change and human activities. Monitoring shoreline changes has become an important task in the ecological environment protection, economic development of the bay. In this paper, coastline changes, bay area and shoreline characteristics of Bohai Bay in northern China were investigated over a 40-year period using multi-dated Landsat TM/ETM satellite image data from 1975 to 2015. The results show that the total coastline length of Bohai Bay increased by 761 km in the past 40 years, but the bay area showed a decreasing trend, which decreased by 18%; the artificial coastline showed a clear increasing trend year by year, while the natural coastline change was relatively weak and acutely disappeared, More than 95% of the coastline's length was made up of artificial coastline along Bohai Bay; the factors influencing the shoreline change of Bohai Bay had significant temporal heterogeneity, and then the leading factor was the anthropogenic development activities (reclamation engineering and port construction), mainly concentrated in the three key regions of Caofeidian Port, Tianjin Port and Huanghua Port in Bohai Bay. With the expansion of development and exploitation of marine activities, the impact of human activities on the evolution of coastal zone is becoming more and more obvious, according to an analysis of the change of the bay coast and the bay area under the influence of hydrodynamic, sedimentary, and natural evolution environment. The study reveals the characteristics and influencing factors of coastal change in Bohai Bay, which can provide the necessary scientific basis for the development and construction, comprehensive management and coastal environmental protection of the Bohai Bay region.
Coastline Change Monitoring by Remote Sensing in Coastal Zone of Bohai Bay in China
Lecture Notes in Civil Engineering
Weng, Chih-Huang (editor) / Xie, Hualiang (author) / Han, Jie (author) / Li, Huaiyuan (author) / Zuo, Shuhua (author) / Han, Zhiyuan (author)
International Conference on Advances in Civil and Ecological Engineering Research ; 2023 ; Macau, China
2023-08-31
9 pages
Article/Chapter (Book)
Electronic Resource
English
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