期刊论文

Cadmium Accumulation in Pontederia cordata and Typha orientalis in a Constructed Wetland

中文

水生态学杂志

1674-3075

2020

41

02

98-104

10.15928/j.1674-3075.2020.02.014

国家重点研发计划（2017YFD0801105）； 农业部与财政部科研专项（农办财函[2016]6号）； 湖南省教育厅项目（湘财教指[2015]54号）； 湖南省重点学科建设项目（2006180）；

本校为第一机构

为探讨人工湿地系统中挺水植物梭鱼草(Pontederia cordata)和香蒲(Typha orientalis)对镉(Cd)积累的动态变化,通过在室外表面流人工湿地采样和室内分析相结合的方法,对8-12月梭鱼草和香蒲地上部和地下部的生物量、镉含量及积累量的动态变化进行了分析.结果 表明,梭鱼草根部和茎叶镉含量为0.25～0.70 mg/kg和0.07～0.18 mg/kg,香蒲根部和茎叶镉含量为0.16～0.39 mg/kg和0.11～0.17 mg/kg,根部镉含量均显著高于各自的茎叶部,两种植物各部位镉含量均在10月达到最大值,两者对镉的富集与转运能力均随着月份的变化而变化,都呈先增高、后降低的趋势;其中,梭鱼草对底泥镉的富集系数为0.76～3.13,香蒲为0...

Aquatic plants that can effectively remove heavy metals and other pollutants from water are selected for use in the construction of artificial wetlands.In this study, we investigated the dynamic changes in cadmium accumulation in Pontederia cordata and Typha orientalis in a surface flow constructed wetland.The wetland system used for the investigated has three treatment ponds and the P.cordata and T.orientalis were transplanted into the first treatment pond in May, 2017.The biomass and cadmium accumulation, above and below ground, in the two emergent plant species were analyzed each month from...