农业非点源污染物在排水沟渠中的迁移转化研究进展

农业非点源污染物在排水沟渠中的迁移转化是农业非点源污染控制和管理的重要环节。在简要分析农田排水沟渠生态结构和生态特征的基础上,归纳总结了排水沟渠中水生植物、微生物和基质底泥各组分的生态功能以及各组分同氮磷污染物间的相互作用机理;结合目前研究现状,提出今后尚需进一步研究的问题,包括沟渠生态系统中各组分不同作用的量化研究、农业非点源污染物在排水沟渠中的迁移模型以及宏观层面上沟渠湿地运用与区域生态环境间关系的研究等。

Migration and transformation of agricultural non-point source pollutants in drainage ditches

The migration and transformation of agricultural non-point source pollutants in drainage ditches is an important step of agricultural non-point source pollution control and management. On the bases of analyses on the ecological structure and characteristics of drainage ditches, the ecology function of deposited materials, aquatic plant and microorganisms, and the interaction mechanism of these components to nitrogen, phosphorus pollutants were summarized. The study advances that further research should focus on the aspects of quantitative study on the reactions of different components of drainage ditch ecosystem, the migration model of agricultural non-point source pollutants in drainage ditches, and the relationship between ditch-wetland applications and regional eco-environments.