植被过滤带的研究和应用进展

Research and application advances on vegetative filter strip

水资源的人为污染日趋严重.植被过滤带被认为是降低水体污染、特别是非点源污染的最佳措施之一.植被过滤带是位于污染源和水体之间的带状植被区域,其可以使地表径流中的污染物被沉降、过滤、稀释、下渗和吸收.本文综述了植被过滤带的发展历史、结构、污染控制机理和在实际应用当中的设计、经营管理及效益等方面的研究进展.我国对植被过滤带的研究还处于初始阶段,试验或应用结果都很少,因此,需要扩展和加深这方面的研究,取得相关的试验数据,以使这一生态技术更有效地在我国推广和应用.

Water resources have been increasingly polluted, while vegetative filter strip （VFS） is accepted as one of the best management practices to reduce water body pollution, especially non- point source pollution. A vegetative filter strip is a vegetated strip of land, which separates the run- off and pollutant contributing areas from surface water bodies and allows the runoff and associated pollutants to be attenuated before reaching surface waters via infiltration, adsorption, uptake, de- cay, filtering, and deposition. In this paper, the research and application advances on VFS were reviewed, including the history, structure, mechanisms of pollution control, design, management, and cost effectiveness of VFS. The studies on VFS in China started recently, and very few results of experiments and applications had been achieved. In order to efficiently promote and use this ecological technique in China, more studies on VFS are needed to obtain relative experimental data and results.