摘要
为探索上海地区农田径流污染物的生态拦截模式,在上海市环境科学研究院农业面源污染生态工程控制及生态恢复研究工作示范基地,开展了生态排水沟渠对农田径流营养性污染物的拦截净化效果的研究,并进行了工程尺度的应用示范。现场试验表明:生态沟渠对农田径流SS、TN、NH+4-N、TP均有一定的截留净化作用。工程示范结果显示:示范区内生态沟渠对SS、TN、NH+4-N、TP的净化效果总体上优于示范区外部普通农田排水沟渠。总体来看,生态排水沟渠对氮、磷等营养性污染物有较好的净化作用,可减轻周围环境受纳水体的污染负荷。
In order to explore the ecological retention modes for farmland runoff pollutants in Shanghai, in the demonstration base of ecological control and restoration for agricultural non-point pollution set up by Shanghai Academy of Environmental Sci-ences, the research on retention and purification effect by ecological drainage ditches on farmland runoff pollutants in Shanghai area and the engineering application demonstration were carried out. The field experiment studies shows that the ecological dit-ches have a certain effect of retention and purification on SS, TN, NH4＋ -N and TP. The demonstration shows that effect of the ecological drainage ditch is superior to that of common ditches outside the demonstration zone. In general, the ecological drainage ditch has better purification effect on nitrogen, phosphorus and other nutrient pollutants, which can reduce the pollution load of surrounding environment for receiving farmland runoff water.
出处
《人民长江》
北大核心
2014年第19期72-76,共5页
Yangtze River
基金
上海市环境科学研究院科技创新项目(CX201307)
上海市科学技术委员会科技攻关项目(11dz1211102)
关键词
生态沟渠
农田径流
污染物截留净化
氮磷流失
ecological ditch
agricultural runoff
pollutant retention and purification
nitrogen and phosphorus loss
