Spatiotemporal changes caused by the intensive use of sea areas in the liaoning coastal economic zone of China

• DOI: 10.1371/journal.pone.0242977
• Publication Date: 2020-11-30T13:59:03Z
• Authors: Lina Ke; Shusheng Yin; Shuting Wang; Quanming Wang
• Keywords: Exclusive economic zone; Marine conservation; Marine ecosystem

Oceans and their resources are experiencing immense pressure because of human exploitation. The intensive use sea areas has become an important method in solving the contradiction between ocean supply demand, thereby ensuring sustainable marine economy development, tapping potential sea-area utilization, reasonably allocating utilization structures, increasing economic benefits. This paper explores definition connotation constructs evaluation index system based on input intensity, structure, benefit, ecological environment. Multi-objective variable fuzzy set theory decision analysis methods were used to evaluate Liaoning Coastal Economic Zone China during 2004–2016. spatial differentiation characteristics analysed using cluster analysis. research result showed that: (1) Intensive level coastal zone gradually increased, while it is still a moderately weak level; (2) Sea area varied degrees fluctuates six cities under jurisdiction zone; (3) Marine sustainability indexes have increased cities, exhibiting improvements zone.