人工污水释放对白骨壤模拟湿地系统土壤理化性质的影响

在温室中建立红树林植物白骨壤模拟湿地系统，分别用正常(NW)、5倍(FW)和10倍(TW)浓度的人工配置的污水每周定时定量对模拟系统污灌2次，用海水作对照(CL)，持续1a。研究污灌对模拟湿地系统土壤理化性质的影响。结果表明：经过1a的污水处理，白骨壤模拟湿地系统的土壤理化性质未发生显著改变，种植其上的白骨壤植物能维持正常生长。

Effect of synthetic wastewater on some physico-chemical properties of soil in Avicennia marina simulated wetland system

A simulated mangrove wetland was set up in a greenhouse and the experiment was performed to research the effect of synthetic wastewater on some physico-chemical properties of mangrove soil. The synthetic wastewater of three different concentrations, namely NW, FW and TW and artifical seawater (control) of 1.5% salinity had been discharged into the wetland in fixed quantity twice a week for a year. NW had the characteristics and strength similar to normal municipal sewage while FW and TW contained five and ten times of nutrients and heavy metals as that in NW respectively. Results indicated that the discharge of synthetic wastewater to the simulated wetland system over the period of a year did not produce any apparent impact on some physico-chemical properties of soil, and the plant growing in the soil were not contaminated.