Allelopathic Effects of Various Aquatic Plants in Eutrophic Water Areas

ABSTRACT Zhang, Z.; Li, W., and Ashraf, M.A., 2018. Allelopathic effects of various aquatic plants in eutrophic water areas. In: Ashraf, M.A. and Chowdhury, A.J.K. (eds.), Coastal Ecosystem Responses to Human and Climatic Changes throughout Asia. At present, the decontamination efficiency of using two stage biochemical treatment of eutrophic water is low. In this paper, six kinds of aquatic plants were planted in eutrophic water to observe their effects on eutrophication waters. The inhibitory effects of different plants on algae's chlorophyll a, COD, TN, and TP were studied; the relative growth rate represented the stability of suppression was calculated for different plant inhibitory rates and in the OECD chemical test criteria. The results showed that the inhibitory rate of Myriophyllum spicatum and Vallisnerianatans on the concentration of algae's chlorophyll a increased with the passage of time and that the growth of Myriophyllum spicatum, Hydrilla verticillata, Vallisneria, and Ceratophyllumdemensum...