新疆四城市大气质量及污染物变化趋势对比分析研究

Comparison Analysis of Air Quality and Pollutant Change Trend for Four Cities in Xinjiang

对新疆四城市三种主要污染物(SO_2、NO_2、PM_(10))的年均污染水平状况、大气空气质量等级天数以及主要污染物天数进行对比分析,探讨四城市环境质量状况。通过收集2009年-2015年四城市三种污染物的质量监测数据,使用统计描述、卡方分析等对四个城市的污染特征进行评价。得到2009年-2015年四城市优良天数由高到低为克拉玛依市>伊宁市>乌鲁木齐市>喀什市。证明了2009-2015年四城市环境质量状况有所改善;大气环境中污染物SO_2、NO_2总体上呈下降趋势,PM_(10)呈上升趋势。

The annual average pollution levels of three major pollutants（SO2,NO2 and PM10 from four cities in Xinjiang were compared to analyze the atmospheric air quality rating days or days of the main pollutants. The environment qualities of the four cities are discussed. By collecting monitoring data of three kinds of pollutants from 2009-2015,it uses statistical description and chi-square analysis to evaluate the pollution characteristics of the four cities. The good days for the four cities during 2009-2015 days in descending order as Karamay 〉 Yining 〉 Urumuqi 〉 Kashi. It is provide that the urban environment qualities of the researched cities are improving during the research period. SO2,NO2 show a downward trend,but PM10 is on the rise.