【摘要】 以"八五"—"九五"期间郑州市城区环境空气污染的主要监测指标为依据,分析了郑州市环境空气污染的状况、特征及原因。并用模糊综合评判和Spearman秩相关系数rs进行环境空气质量变化趋势分析。更多还原

【Abstract】 This paper depend on the main monitoring index of zhengzhou urban ambient air pollution from the 8th five-year plan to the 9th five-year plan,analyse the situation,character and cause of zhengzhou’s air pollution,and use fuzzy comprehensive assessment and spearman rank related cofficient r_s to analyse the varity tendency of ambient air quality.更多还原