文档介绍：2013-06-25
DOI: .
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应用与环境生物学报 Chin J Appl Environ Biol 2013,19 (3): 484-488
不同氧环境中黑藻腐解过程及对水体-底泥
碳、氮、磷的影响*
王博1, 2 叶春1** 李春华1 孔祥龙1
(1中国环境科学研究院北京 100012)
(2辽宁石油化工大学生态环境研究院抚顺 113001)
摘要
为了解不同溶氧条件沉水植物衰亡分解对水体以及底泥碳、氮、磷的影响,在实验室模拟条件下研究了不同
氧环境下沉水植物黑藻(Hydrilla verticillata Royle)分解过程中碳、氮、磷的释放,并探究沉水植物分解中,由于氧环
境的改变对水体与底泥碳、氮、磷的影响. 结果表明:好氧条件促进了黑藻腐烂分解,以及碳、氮的释放,但对磷的释
放影响不大. 同时,好氧条件明显降低了水体氨氮的含量,减慢了水体了硝酸盐氮的去除率. 而低氧条件加快了硝酸
盐氮的去除率,但是氨氮含量较好氧条件明显增加. 因此,可以考虑在沉水植物腐解前期,氨氮迅速增大时适当曝气
以降低水体氨氮含量. 一段时间后停止曝气,此后沉水植物分解过程增强了水体反硝化作用,加快水体硝酸盐氮的转
化,促进氮素以气体形式移出水体. 图8 表1 参18
关键词
沉水植物;黑藻;腐烂分解;营养盐;溶解氧
CLC X524
The Process of Nutrition Release during position of Hydrilla verticillata in
Different Dissolved Oxygen Conditions*
WANG Bo1, 2, YE Chun1**, LI Chunhua1 & KONG Xianglong1
(1Chinese Research Academy of Environmental Sciences, Beijing 100012, China)
(2Eco-environmental Institute, Liaoning Shihua University, Fushun 113001, Liaoning, China)
Abstract In order to understand the effect of position of submerged plants on water and sediment C, N, P , the decaying
process of submerged macrophytes (Hydrilla verticillata Royle) and the nutrition release during this process were investigated
in different dissolved oxygen conditions. The results showed that aerobic condition promoted position of H. verticillata
and release of C and N, but had little effect on the r