With the expansion of towns in jiangsu , china , the pollution of non - point pollutant and sewage has been more serious 摘要由于城镇规模的不断扩大,小城镇的非点源污染和生活污水污染负荷日益增加。
Non - point pollutants from agricultural sources are major cause of surfacewater eutrophication , which can be traped and removed by adsorption , sedimentation , assimilation , and microbe decomposition of wetlands 农业非点源污染物是引起地表水富营养化的主要因素,湿地能通过吸附、沉积、植物吸收、微生物转化等作用有效截留和去除非点源污染物。