Table 3.

Evaluation of the value of water ecological safety in the YRD region.

Year	Shanghai	Jiangsu	Zhejiang	Anhui	Overall mean
2010	0.274	0.386	0.535	0.381	0.394
2011	0.275	0.395	0.451	0.331	0.363
2012	0.291	0.396	0.548	0.343	0.395
2013	0.292	0.420	0.512	0.345	0.392
2014	0.313	0.422	0.547	0.362	0.411
2015	0.325	0.447	0.579	0.385	0.434
2016	0.345	0.481	0.588	0.453	0.467
2017	0.325	0.442	0.522	0.382	0.418
2018	0.303	0.476	0.531	0.392	0.426
2019	0.323	0.459	0.599	0.364	0.436
2020	0.327	0.459	0.575	0.460	0.455
2021	0.332	0.431	0.597	0.404	0.441
2022	0.335	0.422	0.559	0.362	0.420
2023	0.338	0.437	0.531	0.385	0.423