Year	Marine Ecological Society U₁	Marine Ecological Environment U₂	Coupling Degree C Value	Coupling Degree C Phase	Coupling Coordination Degree D Value	Coupling Coordination Degree D Level
2006	0.0286	0.5904	0.4200	Antagonistic	0.3605	Low Coordinated
2007	0.1448	0.3793	0.8943	High-Level	0.4841	Low Coordinated
2008	0.1062	0.5308	0.7453	Running-in	0.4872	Low Coordinated
2009	0.3262	0.5361	0.9699	High-Level	0.6467	Moderately Coordinated
2010	0.3739	0.6997	0.9528	High-Level	0.7152	Moderately Coordinated
2011	0.4808	0.6477	0.9890	High-Level	0.7470	Moderately Coordinated
2012	0.5567	0.6562	0.9966	High-Level	0.7774	Moderately Coordinated
2013	0.7133	0.6874	0.9998	High-Level	0.8368	Highly Coordinated
2014	0.8621	0.7020	0.9947	High-Level	0.8820	Highly Coordinated
2015	0.9202	0.7155	0.9921	High-Level	0.9008	Highly Coordinated
2016	0.9074	0.7357	0.9945	High-Level	0.9039	Highly Coordinated