陕西省大气环境质量状况分析与评价

AIR QUALITY ANALYSIS AND EVALUATION OF SHAANXI PROVINCE

以1999～2008年陕西省大气环境中主要污染物二氧化硫(SO2)、二氧化氮(NO2)和可吸入颗粒物PM10的监测结果为依据,对其年均浓度值的变化特征进行了分析,并利用模糊综合评价模型对各年大气环境质量状况进行了综合评价.结果表明:10年来,陕西省大气环境质量状况呈明显好转趋势,主要污染物是可吸入颗粒物PM10.通过模糊综合评价得出空气环境质量三级标准的隶属度从2004年后开始逐渐减小,而一、二级标准的隶属度比重不断增大,这说明,近10年来陕西省在改善大气环境质量方面所作出的大量工作是切实有效的.

In this paper,1999～2008 atmospheric environment,Shaanxi province in the major pollutants sulfur dioxide（SO2）,nitrogen dioxide（NO2） and particulate matter（mainly particulate matter PM10） monitoring based on the results of its annual average concentration values changes in characteristics were analyzed.And the use of fuzzy comprehensive evaluation model for each year the state of atmospheric environmental quality comprehensive evaluation concluded that actively improve the quality of atmospheric environment necessary.The results showed that：10 years,the atmospheric environment quality situation in Shaanxi province,showed significant improvement in the trend,the main pollutant is still a respirable particulate matter.Draw air through a comprehensive assessment of environmental quality from the three standards of membership began to decrease after 2002,while a secondary standard of the proportion of growing membership,which shows that nearly 10 years in Shaanxi province to improve the quality of atmospheric environment great deal of work made in this regard is effective.