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      In this paper, the morphology and content of phosphorus in sediments was extracted by chemical continuous extraction method, and the effects of plants on the morphology and the phosphorus content was studied. The results showed that the higher levels of sediment phosphorus are self-generated and debris phosphorus,simultaneously the content of occluded phosphorus, debris phosphorus and self-generated were increased in the sediments with plants, indicating that the plants promote the phosphorus accumulation of difficultly used by biologies.However, exchangeable phosphorus and organic phosphorus in the sediments with plants decreased 58.58% and 60.82% respectively. Ferrum-bound phosphorus and aluminum bound phosphorus is reactive phosphorus, the impact of plants on them is smaller. In general, the total phosphorus content in the sediments decreased 8.10%.
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The effects of plants on  the morphology and content of phosphorus in sediments, which were measured based on chemical continuous extraction method, were investigated in this paper. The results showed that the higher levels of sediment phosphorus were self-generated and debris phosphorus, simultaneously the content of occluded phosphorus, debris phosphorus and self-generated were increased in the sediments with plant growth,  indicating that  the plants promoted the accumulation of poorly bioavailability  phosphorus . Besides, the exchangeable phosphorus and organic phosphorus in the sediments were decreased  58.58% and 60.82% respectively. Ferrum-bounded phosphorus and aluminum bounded phosphorus were reactive phosphorus, which were less affected by plants.  In general,  the total phosphorus content insediments were decreased 8.10%.
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