5Aronsson P G, Bergstrom L F. Nitrate leaching from lysimetergrown short-rotation willow coppice in relation to N-application, irrigation and soil type[ J ]. Biomass and Bioenergy ,2001,21 ( 3 ) : 155-164.
6Brix H, Gregersen P. Water balance of willow dominated constructed wetlands[ J]. Proc Int Conf Wetland Syst Water Pollut Control, 2002,8:669-670.
7Gregersen P, Brix H. Zero-dlscharge of nutrients and water in a wil- low dominated constructed wetland [ J ]. Water Sci Techno, 2001, 44,407-412.
8Pantip K, Suwanehal N. Constructed treatment wetland: a study of eight plant species under saline conditions [ J ]. Chemosphere, 2005,58(5) :585-593.