三种水生植物在不同季节去污能力的对比研究

在实验室人工模拟太湖地区春季和冬季不同气候条件下,对三种抗寒去污性能较强的水生植物伊乐藻、石菖蒲和水芹菜在不同营养状态下和不同季节温度条件下去除氮磷的效果进行了系统地对比研究。结果表明:这三种植物均能较好地吸收水中的营养物质,其中以水芹菜脱氮除磷效果最好;总体上植物在春季吸收氮的效果要好于冬季,但对磷的季节吸收差异没有氮明显。可利用沉水植物和挺水植物对氮磷去除的各自优势分别筛选吸收效果较好的植物品种,构成双层次群落结构(FAMS)用以修复太湖地区富营养化水体。

Experimental Study of Decontamination Ability of Three Hydrophytes in Different Seasons

By artificial imitation of the Spring and Winter weather condition of Taihu area,three hydrophytes,in terms of Elodea Canadensis Michx.,Oenanthe javanica(BL)DC.and Acorus tatarinowii Schott,were used to investigated the effects on decontaminating nitrogen and phosphor at the different nutrition levels and different weather conditions.The results showed that all the hydrophytes absorbed the nutrient substance effectively and the effects of Oenanthe javanica(BL.)DC.was the best.In a mass,the decontamination abilites of three hydrophytes were more relied on temperature,but the phosphor's absorption was not so obvious affected than nitrogen's.At the same time,we should make full use of hydrophytes' strong suit,such as Oenanthe javanica(BL.)DC.and Elodea Canadensis Michx.,which are opimal hydrophytes to construct Floating Aquatic Macrophyte-based Treatment System(FAMS)for eutrophication water's remediation at Taihu areas.