城市园林景观对河道水污染的防治效果研究

Research on Prevention and Control Effect of Urban Landscape Architecture on River Water Pollution

针对城市水污染日益严重的问题,提出城市园林景观对河道水污染的防治效果研究。采集滨河公园河道各采样点水体样本,以理化指标、重金属和类金属含量及对应WQI和TLI评估上、下游水质。分析后可知,园林景观对河道水污染防治作用明显,且部分指标间存在关联作用,进一步分析植被过滤带、台地式石笼护岸、河岸斜坡式缓冲带和生态浮岛中各种植类型的净化效果,实验分析得出各种植类型均具备防治效果,其中乔灌木群落栽植效果最佳,因地制宜地结合各种植类型能够有效防治河道水污染。

In view of the increasingly serious problem of urban water pollution,this paper puts forward the research on the prevention and control effect of urban landscape on river water pollution.Water samples were collected from each sampling point in the riverway of Binhe Park.The upstream and downstream water quality was evaluated by physical and chemical indexes,contents of heavy metals and metalloids,and corresponding WQI and TLI.After the analysis,it can be known that the garden landscape has obvious effect on the prevention and control of river water pollution,and some indicators are related.Further analysis of the purification effects of various planting types in vegetation filter belt,terrace gabion revetment,bank slope buffer belt and ecological floating island shows that all planting types have prevention and control effects,among which the planting effect of arbor and shrub community is the best.The combination of various planting types according to local conditions can effectively prevent and control river water pollution.