5Kadlec R H, Knight R L. Treatment wetlands [M]. Michigan, Boca Raton, FL: Lewis Publishers, 1996.
6Kivaisi A K. The potential for constructed wetlands for wastewater treatment and reuse in developing countries: a review [J]. Ecological Engineering, 2001,16:545 - 560.
7Hoppe H G, Emerick L C, Gocke K. Microbial decomposition in aquatic environments: combined processes of extra cellular activity and substrate uptake [J]. Appl Environ Microbiol, 1988, 54:784 - 790.
8Savin M C, Amador L A. Biodegradation of norflurazon in a bog soil [J].Soil Biol Biochem, 1998, 30:275 - 284.
9Martin C D, Moshiri G A. Nutrient reduction in an in-series constructed wetland system treating landfill leachate [J]. Water Sci Technol, 1994,29(4): 267 - 272.
10Smaith M S, Tiedje J M. Phases of denitrification following oxygen depletion in soil [J]. Soil Biol Biochem, 1979,11:261 -267.
