【摘要】 研究了黄菖蒲、石菖蒲、常绿水生鸢尾和黑三棱4种水生植物对富营养化程度不同的两种水体中氮、磷的去除效果,旨在为武汉地区湖泊湿地的生态修复、生态沟渠的构建和人工湿地的布置提供试验数据和技术支持。选取南湖排污口水体和林果所池塘水作为供试水体在室内模拟水生植物的水体净化试验,定期观测4种水生植物的生长状况并测定各供试水体中氮和磷的含量变化。结果表明,通过研究结果表明,黑三棱、黄菖蒲和常绿水生鸢尾在2种富营养化水体中均能生长,石菖蒲在高浓度富营养化水体中生长受到影响,这4种植物对不同程度富营养化水体中的氮、磷去除率不同,黑三棱对2种不同富营养化程度水体的总氮的去除率分别为50.29%、44.59%,黄菖蒲的为48.84%、46.13%,常绿水生鸢尾的为41.00%、41.50%,石菖蒲的为36.71%、41.13%;对2种水体总磷的去除率黑三棱的为67.74%、60.55%,黄菖蒲的为62.35%、59.61%,常绿水生鸢尾的为57.74%、52.00%,石菖蒲的为48.55%、49.85%。试验表明,4种水生植物均能改善富营养化水体的水质。综合分析各项指标可知,4种植物中黑三棱对富营养水体的净化效果最好,黄菖蒲也表现出较强的净化去除能力,石菖蒲对水体的净化能力表现较差。更多还原

【Abstract】 Four kinds of aquatic plant namely Iris pseudacorus,Acorus tatarinowii,Water Iris and Sparganium stoloniferum( Graebn.)Buch.-Ham. ex in two levels of eutrophic water were compared,and nitrogen and phosphorus removal capacity of eutrophic water were analyzed,to provide test data and technical support for the ecological restoration of lake wetland,the construction of ecological ditch and the arrangement of constructed wetland in Wuhan area. selected two levels of eutrophic water coming from sewage outfall of the south lake and the pond of Wuhan Science Research Institute of Forestry & Fruit-tree as experimental waters,and simulated Purification of Eutrophicated Water by four kinds of aquatic plant in still water Indoor. Growth status of four kinds of aquatic plants were observed,and the changes of contents of nitrogen and phosphorus were determined at regular intervals. The results showed that Sparganium stoloniferum( Graebn.) Buch.-Ham.ex,Iris pseudacorus and Water Iris could grow normally in two levels of eutrophication water,while the growth of Acorus tatarinowii in the high concentration of water was affected. There were significant differences in the removal efficiency of nitrogen and phosphorus in eutrophic water. In the two levels of eutrophic water,the total nitrogen removal rate of Sparganium stoloniferum( Graebn.) Buch.-Ham. ex were 50. 29%,44. 59 %,Iris pseudacorus were 48. 84 %,46. 13 %,Water Iris were 41. 00 %,41. 50 %,Acorus tatarinowii were 36. 71 %,41. 13%,respectively. And the total phosphorus removal rate of Sparganium stoloniferum( Graebn.) Buch.-Ham. ex were 67. 74 %,60. 55 %,Iris pseudacorus were 62. 35 %,59. 61 %,Water Iris were 57. 74 %,52. 00 %,Acorus tatarinowii were 48. 55 %,49. 85 %,respectively. The result showed four kinds of aquatic plant could obviously improve the quality of two levels of eutrophication water. The comprehensive analysis of the indicators showed that Sparganium stoloniferum( Graebn.) Buch.-Ham. ex has strong ability to remove nitrogen and phosphorus from Eutrophic Water,followed by Iris pseudacorus,Acorus tatarinowii of the worst removal rate.更多还原