The Model of Early Warning for China's Marine Ecology-Economy Symbiosis Security

Abstract As China's marine strategic position continues to emerge, its ecological security issues have become increasingly critical. The research is based on economic and social subsystems, with marine ecological security subsystem as the core. A comprehensive multifunctional composite system dynamics model of marine ecological safety is constructed, and data simulation and prediction are carried out based on it. This data is applied to its latest achievement Ocean Lotka-Volterra model, thereby realizing the systematic early warning of China's marine ecological security. The research results show that China's marine ecological environment deteriorated in 2018, the inflection point; although it will recover after 2022, it still shows a high degree of vulnerability and sensitivity. This indicates that marine ecological deterioration is imminent, and the Chinese government urgently needs to take corresponding measures to ensure the health and stability of China's marine resources and environment. This study finds out the key restrictive factors of China's marine ecological security, fills the literature gap in the field of China's marine ecological security early warning to a certain extent, and has both theoretical innovation and practical innovation, which are of great significance.