JOURNAL OF NATURAL RESOURCES ›› 2019, Vol. 34 ›› Issue (9): 1886-1901.doi: 10.31497/zrzyxb.20190907

• Resource Utilizationand Management • Previous Articles     Next Articles

The change of continental coastline and its development and utilization intensity in the East China Sea

LI Jia-lin1,2, TIAN Peng1, SHAO Shu-yao1, WANG Hai-feng1, WANG Li-jia1, YE Meng-yao1, ZHAO Meng-qi1, ZHANG Ke-qin1, CAI Kai-te1, RUAN Ying-chao1, SHEN Xing-wen1   

  1. 1. Department of Geography & Spatial Information Technology, Ningbo University, Ningbo 315211, Zhejiang, China;;
    2. East China Sea Institute, Ningbo University, Ningbo 315211, Zhejiang, China
  • Received:2019-04-01 Revised:2019-07-11 Online:2019-09-28 Published:2019-09-28

Abstract: Based on remote sensing images of the six periods from 1990 to 2015 in the coastal zone of the East China Sea, the changes of the continental coastline were analyzed and the intensity of shoreline utilization was evaluated. The results show that: (1) The continental coastline continued to go towards the sea, and the length of the coastline was reduced by 495.91 km. The intensity of shoreline changes was fluctuating. A large amount of natural shorelines in the structure was converted into artificial shorelines, and the proportion of natural shorelines decreased by 14.18%, while that of artificial shorelines increased by 21.94%, and the diversity of shorelines increased rapidly. (2) The average fractal dimension of the coastline showed a downward trend of fluctuation, and the shape developed in a straight and regular direction. The sea-land pattern of the coastal zone was characterized by land reclamation and the land area increased by 2655.01 km2. The coastal zone was significantly affected by human activities such as tidal flat farming, reclamation and port construction. (3) The development and utilization intensity of the coastline was strengthened. The coastline artificialization index increased to 53.88% in 2015. The development and utilization of the subjectivity changed from the single subject model to the formation of the dual subject model, by 2015, the coastline dual entity into bedrock coastline (30.53%) and construction coastline (20.26%). The coastline comprehensive utilization index rose by 32.42%, and the influence of human activities on coastline changes significantly increased.

Key words: coast, development and utilization intensity, coastline change, the East China Sea