文献类型：会议论文

英文题名：EFFECTS OF PLANT DIVERSITY ON PLANT BIOMASS AND EFFLUENT NITROGEN REMOVAL IN A CONSTRUCTED WETLAND

作者：Wang, Hai[1,2];Chen, Zhengxin[1];Ge, Ying[1];Huang, Chengcai[2];Zhu, Sixi[1];Chang, Jie[1]

机构：[1]Zhejiang Univ, Coll Life Sci, Hangzhou 310058, Zhejiang, Peoples R China;[2]Shaoxing Univ, Coll Life Sci, Shaoxing 312000, Peoples R China

会议论文集：4th International Conference on Logistics, Informatics and Service Science

会议日期：2014

会议地点：Beijing, PEOPLES R CHINA

语种：英文

外文关键词：ammonium; high nitrogen supply; nitrate; plant diversity; substrate solution

外文摘要：The short-term effects of plant diversity (number of plant species and species compositions) on aboveground biomass, substrate inorganic nitrogen (N) concentrations, and substrate solution "effluent" N concentrations were studied in a subsurface verticalflow constructed wetland (CW). Results showed that (1) the number of plant species increased aboveground biomass (P< 0.05) but had no effect on the overyielding index D-Max; (2) the species compositions and presence of the very productive species (e.g., C. alternifolius, A. donax) had a positive effect on plant biomass, while negative effects on substrate and substrate solution N concentrations; (3) substrate nitrate and ammonium concentrations negatively responded to the plant diversity (P< 0.05); (4) the plant diversity decreased substrate solution nitrate and ammonium concentrations (P< 0.05), suggesting that plant diversity increased effluent N removal. The results confirmed that plant biomass and N removal were enhanced by plant diversity in a short time span, and plant diversity could be managed to improve the N removal in a CW at the beginning stage (the second year after cultivation) for wastewater treatment.