Plants as ecosystem engineers in subsurface-flow treatment wetlands.
Plants as ecosystem engineers in subsurface-flow treatment wetlands.
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DOI：
10.2166/wst.2001.0804
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发表时间：
2001-12
期刊：
影响因子：
--
通讯作者：
C. Tanner
中科院分区：
文献类型：
--
作者：
C. Tanner
质量平衡性能数据并排种植和未种植砾石床处理湿地水平潜流的研究进行了比较。种植系统表现出增强的氮和初始磷的去除，但在消毒，BOD，COD和悬浮固体的去除只有很小的改善。植物的直接养分吸收不足以解释种植系统所表现出的改善去除率的一小部分。植物作为生态系统工程师的作用进行了总结，有机质生产和根区氧气释放确定为影响养分转化和封存的关键因素。
Mass balance performance data from side by side studies of planted and unplanted gravel-bed treatment wetlands with horizontal subsurface-flow are compared. Planted systems showed enhanced nitrogen and initial phosphorus removal, but only small improvements in disinfection, BOD, COD and suspended solids removal. Direct nutrient uptake by plants was insufficient to account for more than a fraction of the improved removal shown by planted systems. Roles of plants as ecosystem engineers are summarised, with organic matter production and root-zone oxygen release identified as key factors influencing nutrient transformation and sequestration.