Abstract
The effect of two widely distributed macrophytes, reed and cattail, on phosphorus fractionations (PFs) of surface sediments distributions from a near-nature constructed wetland were studied in both autumn and spring. The results showed that the average values of PFs in the sediments were ranked in the order of Ca-P>Org-P>Al-P≈Fe-P>Ex-P>O-P. The mobile PFs, such as Al-P, Fe-P, Ex-P and Org-P influenced the TP concentrations in macrophytes free area. Only Ca-P was related with TP in macrophytes covered area, indicating the P stability of reed community sediment (RCS) and cattail community sediment (CCS). The other compositions of sediments, i.e. organic matter (OM), alkaline phosphatase activity (APA), and active-Fe were greatly decreased in the presence of macrophytes, while active-Al were slightly increased. OM and active-Al were found to be more significant related with PFs in OWS and RCS, while APA and active-Fe were related with PFs in the macrophytes covered sediments. Therefore, macrophytes induced the variation of sediment compositions and further influenced the distributions and stabilization of PFs. Moreover, cattail community performed better in declining the sediment compositions, P accumulation and its release.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
