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Spatiotemporal Variations and Driving Factors of coastline in the Bohai Sea

Journal of Ocean University of China 2022年第6期21卷 1517-1528页

作者： ZHANG Lei LI Guangxue LIU Shidong WANG Nan YU Di PAN Yufeng YANG Xue College of Marine Geosciences Ocean University of ChinaQingdao 266100China Key Laboratory of Submarine Geosciences and Prospecting Techniques MOEOcean University of ChinaQingdao 266100China College of Oceanic and Atmospheric Sciences Ocean University of ChinaQingdao 266100China

The utilization and protection of coastlines play a crucial role in the sustainable development of coastal *** coastline designations in recent years have witnessed more coastal areas worldwide undergoing significant land reclamation for agriculture,industry,and urbanization *** study used remote sensing images from 1986 to 2016 to analyze spatiotemporal changes in the coastlines of 13 cities around the Bohai Sea,which cover one city(Tianjin City)and three provinces(Liaoning,Hebei,and Shandong).Using coastline and socioeconomic data from 1986 to 2016,a partial least-squares regression(PLSR)model was established to analyze factors affecting the utilization of coastlines in each *** results showed that from 1986 to 2016,the retention rates of natural coastlines in the cities around the Bohai Sea decreased,and the overall coastline expanded toward the ***,the impacts of human activities were prominent on the silty mud and sandy *** development,population growth,and urbanization were the main drivers of the development and construction of coastal cities,which changed the coastlines around the Bohai Sea to a state of high-intensity *** addition,national macro policies and the external market environment indirectly drove the intensity of coastline use through regulations and interventions in ***,there were significant differences in the levels of development of the cities surrounding the Bohai *** the future,the differences in the original coastal resources and urban development planning must be considered,the traditional parameters of economic development must be changed,the efficiency of coastline utilization must be improved,and urban clusters must be integrated.

关键词： Bohai Sea urbanization coastline changes coastline utilization degree driving force

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