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对温室中建立的含底泥、潮汐海水和1a生秋茄苗的模拟湿地系统,分别用人工海水(CK)和不同Zn浓度的人工污水定时、定量进行持续1a的污灌,以研究Zn在模拟系统中各部分的分配和系统对Zn的承受能力.结果表明:加入系统的3种ρ(Zn)处理污水中的Zn主要存留在土壤中(45.80%~89.45%),植物和凋落物中的Zn共占加入量0.22%~1.48%.根据物质平衡模型计算得的系统使用寿命t至少为24a.
The simulated wetland system with sediment, tidal seawater and 1-year-old candel seedlings established in the greenhouse was quantitatively treated with artificial seawater (CK) and artificial sewage with different concentrations of Zn for a lapse of 1a so as to study the effects of Zn on simulated The distribution of the various parts of the system and the ability of the system to withstand Zn. The results showed that the Zn in the three kinds of ρ (Zn) treated sewage was mainly retained in the soil (45.80% ~ 89.45%), and Zn in the plant and litter accounted for 0.22% 1.48%. According to the material balance model calculated system life t at least 24a.