关键词: 流动沙丘, 物种格局, 种间相关, 异速生长

Abstract: By the method of artificial simulation in laboratory, and with water spinach (Ipomoea aquatic), loach (Misgurus anguillicaudatus), and a kind of pseudomonad (Rhodopseudomonas palustris)as the engineering species, a composite bioremediation system of aquatic economic plant  aquatic animal  microorganism was constructed to improve the water quality of sewage. The biomass of I. aquatic and M. anguillicaudatus in the system and the water quality indices were investigated. Within the 23 days experimental period, the nutrient concentrations in the sewage decreased significantly, with the removal rates of NH₄⁺-N, NO₃^--N, TP, and COD_Mn being 96.5%, 82.2%, 53.2%, and 24.5%, respectively. Meanwhile, the biomass of I. aquatic and M. guillicaudatus was averagely increased by 31.2% and 6.1%, respectively. All the results suggested that this composite bioremediation model had good economic and environmental benefits.

Key words: moving sand dune, species distribution pattern, interspecific correlation, allometric growth.