5Schuurkes J A A R, KoK c j, Den Hartog C. Ammonium and nitrate uptake by aquatic plants from poorly buffered and acidified waters[J]. Aquatic Bota. , 1986,24 . 131 -- 146.
6Wieder R K, Linton M N, H eston K P. Laboratory mesoncosm studies of Fe, AL, Mn, Ca, Mg dynamics in werlands exposed to synthetic acid coal mine drainage [J] Water, Air Soil Poll. , 1990,51 : 181 -- 191.