At the same time, the health evaluation results of the chemical–biological integrated index in the period of 1998–2022 showed that the health status of the eleven key sections in Poyang Lake showed a trend of the first quarter > fourth quarter > second quarter > third quarter.
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Assessment of Organic Matter Influence on the Ecological Integrity of Poyang Lake Using O/E Model and Chemical-Biological Indices over the Past Two Decades.
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