摘要
以北方典型大城市-天津为例,阐述了天津市城市化现状,利用主成份分析方法计算了城市化综合指数,运用回归模型对城市化和工业废水排放量进行耦合分析,指出了城市化进程中工业COD减排的主要驱动力。结果表明:自2003年至2005年,天津城市化与水污染处于加速阶段的拮抗期,工业COD污染随着城市化进程恶化。加大第三产业比重,相应减小第二产业比重是今后天津需要政策性引致的主要方向,它将对工业废水污染负荷的削减起着非常明显的驱动作用。
The situation of urbanization and water environment of tianjin in north was studied. The integrated index of urbanization level was calculated through principal component analytical method. The coupling of urbanization integrated index and industry waste water displacement was carried out through regression model. Then the drive gene of water pollution was studied.
出处
《环境科学与管理》
CAS
2008年第9期56-59,共4页
Environmental Science and Management
关键词
大城市
城市化
COD
减排
big city
urbanization
water pollution
Tianjin
