[Retracted] Comprehensive Treatment of Urban Landscape Water Environment Based on Aquatic Plants Purification and Restoration

<div>Changes in the content of COD, ammonia nitrogen, nitrate nitrogen, and phosphorus in water. (a) Changes in the content of COD and ammonia nitrogen. (b) Changes in the content of nitrate and phosphorus.</div>

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Figure 5

Figure 5: [Retracted] Comprehensive Treatment of Urban Landscape Water Environment Based on Aquatic Plants Purification and Restoration 