淹水处理对湿地土壤中NO_2^-、砷和重金属分布影响

Submerge Effect on NO_2^-,Arsenic and Heavy Metal Contents of Wetland under Different Reed Growing

试验通过人工控制海水漫灌,研究湿地淹水状况和芦苇长势与对土壤中NO2-、砷及重金属分布的影响。结果表明,随着淹水时间的增加,NO2-含量显著降低,但砷及重金属含量不受淹水时间的影响;随着芦苇生长密度的增加,土壤中NO2-、砷及重金属含量显著降低。

Three different submerge times were set to study NO2^-, arsenic and heavy metal contents of wetland under different reed growing. Results showed that NO2^- contents declined with the longer time of submerge, but arsenic and heavy metal contents did not affected.NO2^-, arsenic and heavy metal contents all declined with an increase in the density of reed.