Environ Technol. 2014 Mar-Apr;35(5-8):808-16. doi: 10.1080/09593330.2013.852626.
Three macrophyte species, Phragmites australis, Arundo donax L., and Typha latifolia L. have been separately grown in a horizontal-flow (HF) constructed wetland (CW) fed with domestic wastewater to investigate effects of plant species on nutrient removal and rhizospheric microorganisms. All the three mesocosms have been in operation for eight months under the loading rates of 1.14 g Nm(-2) d(-1) and 0.014gP m(-2) d(-1). Appropriately 34-43% phosphorus (P) was removed in HF CWs, and no distinct difference was found among the plants. In the growing season, A. donax L. removed 31.19 gm(-2) of nitrogen (N), followed by P. australis (29.96 g m(-2)), both of which were significantly higher than T. latifolia L. (7.21 g m(-2). Depending on the species, plants absorbed 1.73-7.15% of the overall N, and 0.06-0.56% of the P input. At least 10 common dominant microorganisms were found in the rhizosphere of all the three plants, and 6 of the 10 kinds of bacteria had close relationship with denitrifying bacteria, implying that denitrifiers were dominant microorganism distributed in rhizosphere of wetland plants.
三种大型水生植物，分别为芦苇（Phragmites australis）、荻（Arundo donax L.）和香蒲（Typha latifolia L.），被单独种植在一个水平流人工湿地（CW）中，用生活污水作为进水，以研究植物种类对养分去除和根际微生物的影响。在 1.14 g Nm(-2) d(-1)和 0.014gP m(-2) d(-1) 的负荷率下，所有三个中试系统都已经运行了八个月。HF CWs 中适当去除了 34-43%的磷（P），但三种植物之间没有明显差异。在生长季节，荻（A. donax L.）去除了 31.19 gm(-2)的氮（N），其次是芦苇（P. australis）（29.96 g m(-2)），均明显高于香蒲（T. latifolia L.）（7.21 g m(-2)）。根据植物种类的不同，植物吸收了总氮的 1.73-7.15%和总磷输入的 0.06-0.56%。在所有三种植物的根际都发现了至少 10 种常见的优势微生物，其中 6 种细菌与反硝化细菌关系密切，这意味着反硝化细菌是湿地植物根际中分布的优势微生物。
