藻类打捞对水体营养循环的影响及其生态效果研究
Study on influence and ecological effect of water nutrient cycle caused by algae salvage
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摘要: 富营养化水体中的藻华是氮磷的富集器，太湖打捞藻样中的总氮、总磷、游离磷及有机物含量分别为98.87 g/kg、3.25 g/kg、0.21 g/kg和95.65%。在底泥中沉降藻类的矿质化周期随着温度的升高而缩短；且其向上覆水中释放氮、磷的强度具有随水温升高而增强的趋势。但在水层厚/底泥比不同的区域，这种营养物释放强度又存在显著的差异。实验证明，藻类的打捞是一种人工延长食物链去除氮磷等污染物的有效方法。Abstract: The algae in the eutrophication water was a enrichment organ of nitrogen and phosphor. The total contents of nitrogen, total phosphor, dissociative phosphor and organic matter in the algae sample collected from Lake Taihu were 98.87 g/kg,3.25 g/kg,0.21 g/kg and 95.65%，respectively. In the sediment, with the temperature increasing,the miner alization period of the algae was shortened.At the same time,the intensity that the algae released N,P to the water enhanced. But in different areas, the intensity was different evidently. It was proven that algae salvage is an effective way to remove nitrogen and phosphor from water body.
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Key words:
- algae salvage /
- sediment /
- dredge /
- mineralization
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