文献类型：期刊文献

英文题名：Plant Litter Submergence Affects the Water Quality of a Constructed Wetland

作者：Pan, Xu[1,2,3] Ping, Yunmei[1,2,3] Cui, Lijuan[1,2,3] Li, Wei[1,2,3] Zhang, Xiaodong[1,2,3] Zhou, Jian[1,2,3] Yu, Fei-Hai[4] Prinzing, Andreas[5]

第一作者：Pan, Xu;潘旭

通信作者：Cui, LJ[1];Cui, LJ[2];Cui, LJ[3]

机构：[1]Chinese Acad Forestry, Inst Wetland Res, Beijing, Peoples R China;[2]Beijing Key Lab Wetland Serv & Restorat, Beijing, Peoples R China;[3]Beijing Hanshiqiao Natl Wetland Ecosyst Res Stn, Beijing, Peoples R China;[4]Beijing Forestry Univ, Sch Nat Conservat, Beijing, Peoples R China;[5]Univ Rennes 1, CNRS, Campus Beaulieu,Batiment 14 A, Rennes, France

年份：2017

卷号：12

期号：1

外文期刊名：PLOS ONE

收录：;Scopus(收录号：2-s2.0-85010953497);WOS:【SCI-EXPANDED(收录号:WOS:000396211400012)】；

基金：This work was funded by the Forestry Nonprofit Industry Scientific Research Special Project "The research of ecosystem service and evaluation techniques of coastal wetlands, China" (No.201404305), Fundamental Research Funds for the Central Non-profit Research Institute of CAF (CAFYBB2014QB025), China Postdoctoral Science Foundation (2015M571161) and National Natural Science Foundation of China (31300400). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.

语种：英文

摘要：Plant litter is an indispensable component of constructed wetlands, but how the submergence of plant litter affects their ecosystem functions and services, such as water purification, is still unclear. Moreover, it is also unclear whether the effects of plant litter submergence depend on other factors such as the duration of litter submergence, water source or litter species identity. Here we conducted a greenhouse experiment by submerging the litter of 7 wetland plant species into three types of water substrates and monitoring changes in water nutrient concentrations. Litter submergence affected water quality positively via decreasing the concentration of nitrate nitrogen and negatively via increasing the concentrations of total nitrogen, ammonium nitrogen and total phosphorus. The effects of litter submergence depended on the duration of litter submergence, the water source, the litter species identity, and the plant life form. Different plant species had different effects on the water nutrient concentrations during litter submergence, and the effects of floating plants might be more negative than that of emergent plants. These results are novel evidence of how the submergence of different plant (life form) litter may affect the purification function of constructed wetlands. For water at low eutrophication levels, submerging a relative small amount of plant litter might improve water quality, via benefiting the denitrification process in water. These findings emphasized the management of floating plant litter (a potential removal) during the maintenance of human-controlled wetland ecosystems and provided a potential tool to improve the water quality of constructed wetlands via submerging plant litter of different types.