Reed-Phragmites australis (Cav.) Trin. ex Steud, an aquatic plant, commonly used in constructed wetlands for wastewater treatment, supplies oxygen into the subsurface environment. Reed may be used as a ‘green machine’ in the form of a floating vegetation cover with many applications: wastewater lagoons, manure lagoons or sewage sludge lagoons. An important measure of the performance of the plant system is the oxygen transfer capacity (OTC). Accurate prediction of the OTC in relation to reed biomass would be crucial in modelling its influence on organic matter degradation and ammonia–nitrogen oxygenation in such lagoons. Laboratory experiments aiming to determine OTC and its dependence on reed biomass were carried out. Eight plants with a total dry mass ranging from approximately 3 to 7 g were tested. Mean OTC was determined per plant: 0.18 ± 0.21 (g O₂·m⁻³·h⁻¹·plant⁻¹), with respect to leaves-and-stem dry mass (dlsm): 44.91 ± 35.21 (g O₂·m⁻³·h⁻¹·g dlsm⁻¹), and to total dry mass (dtm): 33.25 ± 27.97 (g O₂·m⁻³·h⁻¹·g dtm⁻¹). In relation to the relatively small root dry mass (drm), the OTC value was 136.02 ± 147.19 (g O₂·m⁻³·h⁻¹·g drm⁻¹). Measured OTC values varied widely between the individual plants (variation coefficient 115%), in accordance with their differing size. Oxygenation performance was greatest in the reed plants with larger above ground dry mass (>4 g dlsm), but no influence of the root dry mass on the OTC rate was found.

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氧气迁移能力作为衡量芦苇植物水分通气的量度：初步实验室研究

里德芦苇（骑士）特林 ex Steud是一种水生植物，通常在人工湿地中用于废水处理，可将氧气供应到地下环境中。芦苇可以以浮动植被覆盖的形式用作“绿色机器”，在许多应用中都可以使用：废水泻湖，粪肥泻湖或污水污泥泻湖。衡量工厂系统性能的重要指标是氧气传输能力（OTC）。与芦苇生物量相关的OTC的准确预测对于模拟其对此类泻湖中有机物降解和氨氮氧合的影响至关重要。进行了旨在确定OTC及其对芦苇生物量依赖性的实验室实验。测试了八株总干重为约3至7 g的植物。确定每株植物的平均OTC：0.18±0.21（g O₂ ·m ^-3 ·h ^-1 ·植物^-1），相对于茎干质量（dlsm）：44.91±35.21（g O ₂ ·m ^-3 ·h ^-1 ·g dlsm ^-1） ，至总干燥质量（dtm）：33.25±27.97（g O ₂ ·m ^-3 ·h ^-1 ·g dtm ^-1）。关于相对较小的根干质量（drm），OTC值为136.02±147.19（g O ₂ ·m ^-3 ·h ^-1 ·g drm ^-1）。不同植物之间的OTC测得值差异很大（变异系数为115％）。在高于地面干重（> 4 g dlsm）的芦苇植物中，氧化性能最高，但未发现根干重对OTC速率的影响。