[摘要]：空气是人类必不可少，赖以生存的物质基础，而良好的空气质量对健康有很大影响。徐州市地处苏鲁豫皖四省的交界，近些年随经济的发展和人民生活水平的提高，空气质量问题日益引起人们的关注。本文以徐州市为例，以中国空气质量在线监测分析平台收录的历史数据和实时监测数据，以及徐州市环保局的监测数据为基础，从时间和空间两个角度统计分析徐州市2014年空气质量的年际变化规律、年内季节变化规律，和徐州7个监测点在不同天气以及在同一天中空气质量的变化规律，并针对徐州市自然条件、社会经济现状提出解决方案。主要得出了以下规律和结论:
（1）时间尺度上，徐州市2014年，有182天是轻度污染，152天是中度污染，只有30天空气质量是良好。总体来看，徐州市2014年空气质量情况比较严峻。40312
（2）空间尺度上，空气质量的好坏与天气相关性很强，阴天空气质量最差，雨天空气质量最优；此外，空气质量好坏与植被覆盖率没有必然唯一关系，即，绿地面积大，不一定空气质量就好，复层结构比单层结构更容易净化空气。
[毕业论文关键词]：空气质量；时空变化；徐州市
[Abstract]: Air is essential for human survival, the material basis for survival, and good air quality has a great influence on health. Xuzhou city is located at the junction of the four Su Lu Yu Anhui Province, with the development of the economy and the improvement of people's living standards in recent years, people pay more attention to the problem of air quality. Taking Xuzhou city as an example, the analysis to China air quality on-line monitoring data collection platform of historical data and real-time monitoring,and the Xuzhou Municipal Environmental Protection Bureau based on the monitoring data, calculate and analyse air quality of Xuzhou city in 2014 the statistical variation of interannual and seasonal changes of year average change law, and air quality changes of the seven monitoring points  in different weather and on the same day , and according to the natural conditions, socio-economic status of the population,put forward the solution. We get the following conclusions:
(1)The time scale, Xuzhou city in 2014 last year, 182 days is  of light pollution,152 days is moderate pollution, only 30 days, the air quality is good. Overall, Xuzhou air quality situation is grim in 2014.
(2)The spatial scale, the correlation of air quality and weather is very strong.In cloudy days, air quality is the worst,;in rainy days,the air quality is the best; In addition,the air quality and vegetation coverage is not necessarily the only relationship, namely, green space, air quality is not good.The spatial structure of air quality and related greenbelt, a double layer structure more easily than single-layer structure of air purification.

[Key words]: Air quality; Temporal and spatial variation; Xuzhou City
目录
引言  1
1 研究区概况   1
2 数据来源与研究方法    2
2.1 数据来源   2
2.2 研究方法   2
3 结果与分析   3
3.1 空气质量的时间变化  3
3.1.1 徐州市2014年空气质量的年变化  3
3.1.2 徐州市2014年空气质量的季节变化  4
3.2 徐州市空气质量的空间变化   5
3.2.1不同天气空气质量的变化  5
3.2.2同一天不同监测点空气质量变化   8
4 结论与讨论  10
5 参考文献   11
引言
空气是人类生存必不可少的，赖以生存的物质基础。空气受到污染，人类的身心健康就受到了威胁。然而，我国改革开放以来，社会经济得到了持续高速地发展，相应的能源消耗也在大规模增加[1]，石油和煤在内的能源和其他自然资源开始大规模地使用，城市的工业化程度日益加深，环境污染问题日益严重。大区域背景下的大气污染现状不容乐观，对空气质量的研究和解决刻不容缓。 徐州市空气质量的时空变化分析:http://www.751com.cn/huaxue/lunwen_38589.html