Performance of five plant species in removal of nitrogen and phosphorus from an experimental phytoremediation system in the Ningxia irrigation area
文献类型： 外文期刊
作者：
Chen, Chongjuan
2
;
Zhao, Tiancheng
3
;
Liu, Ruliang
3
;
Luo, Liangguo
1
;
作者机构： 1.Inst Environm & Sustainable Dev Agr, Agr Clean Watershed Innovat Grp, Key Lab Agr Environm MOA, CAAS, Beijing 100081, Peoples R China
2.China Agr Univ, Coll Resources & Environm Sci, Beijing 100193, Peoples R China
3.Ningxia Acad Agr & Forestry Sci, Inst Agr Resources & Environm, Yinchuan 750002, Peoples R China
关键词： Phytoremediation;Floating-bedpot culture;Drainagewater;Removal performance;Ningxia irrigation area
期刊名称：ENVIRONMENTAL MONITORING AND ASSESSMENT （ 影响因子：2.513； 五年影响因子：2.871 ）
ISSN：
年卷期：
页码：
收录情况： SCI
摘要： Agricultural non-point source (ANPS) pollution is an important contributor to elevated nitrogen (N) and phosphorus (P) in surface waters, which can cause serious environmental problems. Considerable effort has therefore gone into the development of methods that control the ANPS input of N and P to surface waters. Phytoremediation has been extensively used because it is cost-effective, environmentally friendly, and efficient. The N and P loads from agricultural drainage are a potential threat to the water quality of the Yellow River in Ningxia, China. Yet, phytoremediation has only rarely been applied within the Ningxia irrigation area. In an experimental setup, five species (Ipomoea aquatica, IA; Lactuca sativa, LS; Oryza sativa, OS; Typha latifolia, TL; Zizania latifolia, ZL) were evaluated for their ability to reduceNand P loads over 62 days and five observation periods. Total N and P concentrations, plant biomass, and nutrient content were measured. The results showed that OS, LS, and IA performed better than ZL and TL in terms of nutrients removal, biomass accumulation, and nutrients storage. The highest overall removal rates of N and P (57.7 and 57.3%, respectively) were achieved by LS treatment. In addition, plant uptake contributed significantly to nutrient removal, causing a 25.9-72.0% reduction in N removal and a 54.386.5% reduction in P removal. Thus, this study suggests that OS, LS, and IA would be more suitable than ZL and TL for controlling nutrient loads in the Ningxia irrigation area using phytoremediation.
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