摘要
本文以 1990 - 1998年广元市城区空气例行监测结果为基础 ,结合广元市城市环境综合整治进展情况 ,分析和讨论了其空气质量状况及变化趋势。
Based on results of the routine air monitoring in Guangyuan city from 1990 to 1998,joining the progress of Guangyuan’s comprehensive environmental control,this paper analyzes and discusses its air quality and changing trends
出处
《四川环境》
2000年第1期47-49,52,共4页
Sichuan Environment
