云蒙湖前置库浅水生态净化区植物对水质净化特征分析  

Water purification characteristics analysis of Yunmeng Lake pre-reservoir shallow ecological purification area

作　　者：陈景荣[1] 王立志[1] 

机构地区：[1]山东省水土保持与环境保育重点实验室,临沂大学资源环境学院,临沂276000

出　　处：《生态科学》2016年第1期136-142,共7页Ecological Science

基　　金：国家自然科学基金项目(41303061);山东省科技攻关项目(2011GGH21704);临沂市重大科技创新项目(201211027);山东省水土保持与环境保育重点实验室开放基金(stkf201206);临沂大学博士启动基金(LYDX2013BS063)

摘　　要：原位监测云蒙湖前置库系统浅水生态净化区进出水总磷(TP)、溶解性活性磷(SRP)、总氮(TN)、硝态氮(NO3–-N)、氨氮(NH4+-N)及主要环境因子p H、溶解氧(DO)和氧化还原电位(Eh)及生物量的动态变化,并分析了生物量及环境因子和各形态氮磷净化率之间的关系。结果表明:浅水生态净化区对水中氮磷的净化效率存在夏高冬低的季节性变化规律。总氮和总磷夏季净化率平均在28.11%—43.42%,31.00%—48.00%之间,冬季净化率平均在19.02%—26.36%,21.52%—28.57%之间。植物生长将氮磷富集于体内是对水体净化的一个主要原因,夏季植物旺盛生长冬季植物衰亡是浅水生态净化区净化效率季节性变化的主要影响因素。水生植物对环境因子p H、DO和Eh的改变量与各形态氮磷的净化率呈不同程度的相关,表明浅水生态净化区水生植物通过对环境因子DO、p H和Eh的提高来增加底泥对水中氮磷的吸附效率。The concentrations of total phosphorus（TP）, soluble active phosphorus（SRP）, total nitrogen（TN）, nitrate nitrogen（NO_3-N）, ammonia nitrogen（NH4＋-N） of Yunmeng Lake per-reservoir system shallow ecological purification area were in situ monitored. The main environmental factors including p H, dissolved oxygen（DO）, redox potential（Eh） and biomass were investigated. Relationships between P and N removal rate and biomass and environmental factors were analyzed. The results indicated that the removal rate of N and P of the shallow ecological purification area increased in summer and decreased in winter. The average removal rate of TN and TP was 28.11%-43.42%, 31.00%-48.00% in summer, and 19.02%-26.36%, 21.52%-28.57% in winter. One of the main reasons of water body purification was plant enrichment. The main reason for seasonal variation of removal rate was that plant vigorously grew in summer and died in winter. The difference of p H, DO and Eh had different degree correlation with N and P removal rate. The result showed that plants in shallow ecological purification area increased N and P removal rate through increasing the value of p H, DO and Eh.

关 键 词：前置库 净化 环境因子 

分 类 号：X131.2[环境科学与工程—环境科学]