Journal
BIORESOURCE TECHNOLOGY
Volume 207, Issue -, Pages 134-141Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2016.02.008
Keywords
Interspecific competition; Plants growth; Nutrients uptake; Constructed wetland
Funding
- National Natural Science Foundation of China [50838005]
- National Major Project of China [2013ZX07310-001]
- Program for Innovative Research Team in Shaanxi [2013KCT-13]
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The outcome of competition between adjoining interspecific colonies of Phragmites and Typha in two large field pilot-scale free water surface (FWS) and subsurface flow (SSF) CWs is evaluated. According to findings, the effect of interspecific competition was notable for Phragmites australis, whereby it showed the highest growth performance in both FWS and SSF wetland. In a mixed-culture, P. australis demonstrates superiority in terms of competitive interactions for space between plants. Furthermore, the interspecific competition among planted species seemed to cause different ecological responses of plant species in the two CWs. For example, while relatively high density and shoot height determined the high aboveground dry weight of P. australis in the FWS wetland, this association was not evident in the SSF. Additionally, while plants nutrients uptake accounts for a higher proportion of the nitrogen removal in FWS, that in the SSF accounts for a higher proportion of the phosphorous removal. (C) 2016 Elsevier Ltd. All rights reserved.
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