摘要
以广西入海河流南流江2003—2011年水质数据为例,通过水文估算法和数字滤波法对点源和非点源污染负荷分别进行分割估算。结果表明,2003—2011南流江流域监测断面的非点源污染较为严重,采用水文估算法计算的多年平均硫酸盐、氯化物、硝酸盐氮、亚硝酸盐氮的非点源污染负荷占总负荷的比例分别为0.82,0.81,0.82,0.72;基于数字滤波法计算的多年平均硫酸盐、氯化物、硝酸盐氮、亚硝酸盐氮的非点源污染负荷占总负荷的比例分别为0.72,0.54,0.68,0.63。结果显示,这两种方法的污染负荷分割结果变化趋势大致相同。
Hydrological estimation method and the digital filtering method are used to segment the point source pollution and non-point source pollution of sulfate,chloride,nitrate nitrogen and nitrite nitrogen in Nanliu River from 2003-2011.The results show that the non-point source pollution has become a relatively serious problem in Nanliu River.The calculations of hydrological estimation method show that the ratio of non-point source pollution to total pollution load of these four indexes is 0.82,0.81,0.82 and 0.72 respectively.And calculations of the digital filtering method indicate that ratio of four indexes is 0.72,0.54,0.68 and 0.63 respectively.The results show that the segmentation change trends of the pollution with two methods are close.
出处
《工业安全与环保》
北大核心
2016年第8期72-75,共4页
Industrial Safety and Environmental Protection
基金
国家自然科学基金(51569007)
广西自然科学基金(2015GXNSFCA139004)
广西高等学校高水平创新团队及卓越学者计划(002401013001)
广西矿冶与环境科学实验中心项目(KH2012ZD004)
关键词
非点源污染
点源污染
数字滤波
水文估算法
non-point source pollution
point source pollution
digital filtering method
hydrological estimation method
作者简介
代俊峰，男，1980年生，博士，教授，、主要从事水资源高效利用与水环境研究。
