Variation in plant biomass and nitrogen removal in two wetland blocks with species composition
by Hai Wang; Cheng-Cai Huang; Ying Ge; Yi-Wei Mo; Si-Xi Zhu; Jie Chang
International Journal of Environmental Technology and Management (IJETM), Vol. 17, No. 5, 2014

Abstract: The variation in plant biomass and nitrogen (N) removal capacity with species composition was studied in two constructed wetlands. Findings indicated that increased species compositions had a positive influence on plant biomass and a negative effect on the inorganic N concentrations in substrate and substrate solution (effluent). Elevated N concentrations enhanced the effects of species compositions on plant biomass. The Cyperus alternifolius + Arundo donax mixture produced the largest plant biomass and the smallest inorganic N concentrations in substrate. The Cyperus alternifolius + Coix lacryma-jobi + Arundo donax and the Cyperus alternifolius+ Coix lacryma-jobi + Lythrum salicaria + Arundo donax mixtures produced the largest plant biomass under high N condition (146 g N m⁻² yr⁻¹). In general, the three- and four-species compositions produced the largest plant biomass and the smallest inorganic N concentrations in substrate and effluent. It suggests that plant mixtures are useful in increasing plant biomass and the wastewater N removal capacity.

Online publication date: Sat, 11-Oct-2014

The full text of this article is only available to individual subscribers or to users at subscribing institutions.

 
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.

Pay per view:
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.

Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Environmental Technology and Management (IJETM):
Login with your Inderscience username and password:

Username:        Password:          Forgotten your password?

Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.

If you still need assistance, please email subs@inderscience.com