Water Environment Assessment as an Ecological Red Line Management Tool for Marine Wetland Protection.

Int J Environ Res Public Health · 2017 · PMC5580574 · PMID 28767096

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an overall trendno p-value reported

Among the many indicators investigated, only DO and the petroleum index showed an overall trend of improvement ( Figure 3 ).

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an increasing trendno p-value reported

Overall, an increasing trend in COD was observed and although significant variation was observed annually, the water quality related to organic pollution in the Qilihai wetlands, is improving.

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