Resources Science ›› 2018, Vol. 40 ›› Issue (8): 1645-1657.doi: 10.18402/resci.2018.08.14

• Orginal Article • Previous Articles     Next Articles

Dynamic evolution analysis of reclamation in Jinzhou Bay based on multi source remote sensing images

Lina KE1,2(), Jun CAO1, Hongqing WU1, Quanming WANG3(), Hui WANG1,2   

  1. 1. City Environment Institute of Liaoning Normal University, Dalian 116029, China
    2. Center for Study of Marine Economy and Sustainable Development, Liaoning Normal University, Dalian 116029, China
    3. National Marine Environmental Monitoring Center, Dalian 116023, China
  • Received:2017-12-25 Revised:2018-07-19 Online:2018-08-25 Published:2018-08-10

Abstract:

Reclamation not only increases the land resources, but also has a profound impact on the ecological environment. It is essential to monitor the land reclamation. Based on Landsat TM image data in 1991, 1995 and 2000, SPOT satellite image in 2005, HJ-1 CCD in 2010 and SPOT remote sensing image data in 2014, a method of shoreline extraction based on CA was constructed. The reclamation distribution, intensity index, centroid coordinates and their utilization in the sea area near Jinzhou bay were analyzed in depth. The research results show that: (1) The coastline near Jinzhou bay has increased by 20.07 km for last 23 years, in particular between 1991—1995 and 2005—2010; (2) The displacement of coastline in Beigang town, Niuyingzi and west Haikou in the central part of Jinzhou bay is relatively large, and the reclamation intensity is relatively high; (3) The newly increased reclamation area in Jinzhou bay is 50.67 km2, and its utilization type is mainly urban construction. The area of port construction and reclamation has steadily increased, the area of salt industry is reduced, and the proportion of unused land is increasing year by year; (4) The center of gravity of the reclamation in Jinzhou Bay is generally shifted to the northeast, with the sea near the west of Haikou as the center. A large number of new port construction site was created. Therefore, we should strengthen the ecological transformation and protection of the shoreline that has been filled, standardize the human development activities, reduce the ecosystem pressure in the coastal zone of this region, and further carry out the ecological environment assessment of the gulf at the same time to provide theoretical guidance and scientific basis for the sustainable development of the region.

Key words: reclamation, coastline, multi-source remote sensing image, RS/GIS, dynamic evolution, Jinzhou Bay