摘要
在调查和分析仪征市非点源污染过程中，对建成区进行网格处理，根据土地利用状况和特点，通过采样分析，确定了各网格的非点源污染负荷量和空间变化特征．在非点源污染发生的时段内，与假设在时间上分配均匀的点源污染负荷进行比较，分析二者对区域水环境的叠加影响．以ＣＯＤ为控制因子，计算出各河段在此特定时段内的平均环境容量，提出非点源污染总量控制的途径和方法，并对其控制目标的可达性分析论证，提出相应的防治建议和措施．
On the base of investigating and analyzing the non\|point source pollution, the built\|up area in Yizheng City was divided by grids. According to the features of land utility, the pollutant load of non\|point source of each grid and its spatial orderlines were decided by investgation. During the non\|point source pollution' occurrence, its load was compared with point source pollutant load which was thought to be constant with time, then their common impacts on the river were assessed. COD was selected to be the control variable and the water environmental capacity was calculated. Some relevant suggestions and measures were presented in the end.
出处
《环境科学学报》
CAS
CSCD
北大核心
1999年第4期415-420,共6页
Acta Scientiae Circumstantiae
关键词
非点源污染
总量控制
环境容量
城市水环境
non\|point source pollution, environmental capacity, total quantity control, Yizheng City.
