小群落水生植物在受污染园林生态环境修复中的应用

Application of Small Groups of Aquatic Plants in Restoration of Polluted Garden Ecological Environment

对于受污染的生态环境,水生植物可起到一定的修复作用,具有成本低、见效快和实现简单等优点。确定园林生态环境污染评价指标,以河北廊坊市某受污染的生态园林为例,分析小群落水生植物对受污染环境的修复机理。分析该园林的水体环境、土壤特征、气候条件及原生态植被现状,在保证水生植物自身生长环境适宜的前提下,将4类12种小群落水生植物应用到该园林中,使受污染环境得到明显改善。水体pH值和氮含量均控制在合理范围内;水质的综合污染指数为0.39,水质较好。

For polluted ecological environment, aquatic plants play a certain role in restoration, which have advantages of low cost, quick effect and simple implementation. Pollution evaluation index of garden ecological environment was determined. Taking a polluted ecological garden in Langfang city, Hebei as an example, repair mechanism of small groups of aquatic plants to polluted environment was analyzed. Water environment, soil characteristics, climate conditions and current situations of original ecological vegetation in the garden were studied. On the premise of ensuring suitable growth environment of aquatic plants, 4 categories and 12 small groups of aquatic plants were applied to the garden, which could improve polluted environment significantly.pH and nitrogen content in water were controlled within reasonable ranges. Comprehensive pollution index of water was 0.39, which showed that water quality was good.