昭通市烟草种植区大气环境质量评价

On Assessment of Atmospheric Environmental Quality of Zhaotong Tobacco Growing Areas

通过对烤烟种植区大气环境定点采样监测分析,研究了云南省昭通市代表性植烟区的大气环境质量:按照国标GB3095-1996及其修改单的一级标准,采用单因子污染指数法、内梅罗综合污染指数法对大气中的TSP、二氧化硫、氮氧化物和重金属含量进行了分析评价.结果表明:TSP,SO2,NOX,Cd,Pb,Hg 6项指标中单因子污染指数Pip平均值均小于1,昭通烟区大气环境质量总体良好,没有受到污染;对6项指标的污染负荷比进行排序,烟区大气污染物污染负荷比大小依次为Cd,Hg,NOX,SO2,TSP,Pb;所有采样点大气综合污染指数均小于1,大气环境质量较为清洁.昭通市植烟区的大气环境总体上达到国家环境空气质量的一级标准,适宜绿色、生态烟叶的种植.

Through fixed atmospheric environment samples monitoring and analysis ,the atmospheric envi-ronment quality of tobacco growing representation regions in Zhaotong City ,Yunnan province has been studied .In accordance with the fist standard of the national standard GB3095 1996 and single factor pol-lution index ,Nemerow integrated pollution index method for atmospheric TSP ,sulfur dioxide ,nitrogen oxides and heavy metals have been analyzed and evaluated .The results show that the average single factor pollution index Pip of TSP ,SO2 ,NOX ,Cd ,Pb ,Hg six indicators is less than 1 ,which suggests that at-mospheric environmental quality of Zhaotong tobacco growing representation regions is generally good , and atmospheric environment is of no contamination .The pollution loads ratio on six indicators were sor-ted ,it showed that the order is cadmium〉 mercury〉NOX 〉SO2 〉 TSP〉 Pb .The atmospheric Nemerow integrated pollution indexes of all sampling points were less than 1 ,which shows the atmospheric environ-mental quality is cleaner .Therefore ,on the whole ,the atmospheric environment quality of tobacco grow-ing representation regions in Zhaotong reach the fist standard of the national standard ,and these regions are suitable for green ,eco-tobacco cultivation .