辽河湿地对氮的去除效果研究

在2010年5—10月份对辽河水中及土壤内氮素进行监测,并对不同区域净化效果进行对比分析,评价不同区域对氮素的去除作用,研究了辽河湿地系统对水中和土壤中各种形态氮的去除效果。结果表明,在湿地各分区内,水中氮素的污染以铵态氮为主,湿地对铵态氮的去除能力较强,变化幅度最大的时期出现在6—8月份。水中铵态氮与全氮的相关性极显著。随着沿途湿地植物的吸收、微生物的降解以及水体自身的稀释,铵态氮不再是水中氮素的主要赋存形态。土壤中氮素的分布在时间上表现出比较一致的规律性,呈不规则的"M"形的双峰曲线变化。

Effects of the Liao River Wetland on Removal Nitrogen

Comparative study on the effect on removal various forms of nitrogen in spatial and temporal variation in water and soil of Liao River wetland with monitoring the content of nitrogen in the Liao River and soil,comparing and analyzing the purification of various areas and appraising for effect on removal nitrogen.The result indicated that the wetland is capable of effectively removing the ammonium nitrogen with a better efficiency,which is the important part of pollutants in river of various areas.The biggest amplitude appeared during from June to August.In addition,the ammonium nitrogen and total nitrogen in river had a highly significant correlation based on spss system.The ammonium nitrogen is no longer the most fractionation of nitrogen in river due to the absorption of plants,degradation of microorganism and dilution of water.The distribution of nitrogen in soil had a same regularity that followed irregular changes as bimodal curve.