【摘要】 研究了水翁在人工湿地的生长特性及其对污水的净化效果。结果表明:生长在人工湿地的水翁具有发达的侧根系,能保持正常的净光合速率((19 2±2 1)μmol (m2·s))、蒸腾速率((23 5±2 3)mmol (m2·s))、气孔传导率((657 5±53)mmol (m2·s))、根系活力((20 9±3 2)μg (g·min))和生长速率((9 9±0 5)mg (g·d))。水翁人工湿地对TN,TP,CODCr和BOD5的去除率分别为55 6%,44 2%,75 7%和73 2%。其中水翁对N,P的吸收量分别占人工湿地对N,P去除量的16 4%和12 6%。水翁为常绿乔木,可考虑与灌木和草本植物结合起来,建立乔、灌、草自然湿地系统,达到改善水质的目的。更多还原

【Abstract】 The growth characteristics and pollutant removal effect of Cleistocalyx operculatus in the constructed wetland were studied. The experiments showed: C.operculatus in the constructed wetland possessed a large amount of lateral roots, and they maintained a normal rate of net photosynthesis （（19.2±2.1）μmol/（m·s））, with a transpiration rate of （23.5±2.3）mmol/（m·s）, a stomatal conductance of （657.5±53）mmol/（m·s）, a vigor of （20.9±3.2）μg/（g·min） in the root system and a relative growth rate of （9.9±0.5）mg/（g·d）. The removal rates of TN, TP, COD_Cr and BOD₅ from the sewage in the constructed C.operculatus wetland were 55.6%, 44.2%, 75.7% and 73.2%, respectively. However, the amounts of uptake to N and P by plant only accounted for 16.4% and 12.6% of the amounts of removal from wastewater, respectively. C. operculatus, an evergreen tree, could be planted with shrub and herb to build natural wetland system and improve water quality.更多还原