文献类型：期刊文献

英文题名：Positive effects of plant diversity on nitrogen removal in microcosms of constructed wetlands with high ammonium loading

作者：Ge, Ying[1];Han, Wenjuan[1];Huang, Chengcai[2];Wang, Hai[2];Liu, Dong[3];Chang, Scott X.[4];Gu, Binhe[5];Zhang, Chongbang[6];Gu, Baojing[1];Fan, Xing[1];Du, Yuanyuan[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;[3]Minist Environm Protect, Nanjing Inst Environm Sci, Nanjing 210042, Jiangsu, Peoples R China;[4]Univ Alberta, Dept Renewable Resource, Edmonton, AB T6G 2E3, Canada;[5]Univ Florida, Soil & Water Sci Dept, Gainesville, FL 32611 USA;[6]Taizhou Univ, Coll Life Sci, Jiaojiang 318000, Peoples R China

年份：2015

卷号：82

起止页码：614

外文期刊名：ECOLOGICAL ENGINEERING

收录：SCI-EXPANDED(收录号：WOS:000360189100072)、、EI(收录号：20152500946905)、Scopus(收录号：2-s2.0-84931261151)、WOS

基金：This project was supported financially by the National Natural Science Foundation of China (No. 31170305, 31270377, 31470463 and 51279121).

语种：英文

外文关键词：Species richness; Functional group; Species identity; Ecosystem function

外文摘要：Wastewater with a high nitrogen (N) loading rate and high ammonium (NH4+-N)/nitrate (NO3 -N) ratio is increasingly becoming a problem in regional environment. An experimental system was established to test the effects of plant diversity on N removal in microcosms of constructed wetlands. The microcosms were treated with simulated wastewater with NH4+-N as the sole chemical form of N, and with mixed NH4+/NO3 -N (1: 1) as a control, both at a loading rate of 162 g N m(-2) yr(-1). Results indicated that: (1) high plant species and functional group richness improved N removal efficiency under a high ammonium loading rate, (2) high species richness reduced the difference of N removal between sole NH4+-N and mixed NH4+/NO3 -N treatments, (3) the presence of Coix lacryma-jobi (C4 grass) increased both biomass and N removal, whereas the presence of Aeschynomene indica (legume) increased N removal but decreased biomass of the communities. Overall, the results showed that high plant diversity enhanced N removal efficiency regardless of the N-form ratios and N level in the ecosystem. (C) 2015 Elsevier B.V. All rights reserved.