三峡库区生态环境教育部重点实验室,重庆400715  

Spatial and Temporal Distribution Characteristics of Air Qualityin China’s Cities

作　　者：牛慧敏[1] 涂建军[1,2] 姚作林 哈琳 李建波[1] 

机构地区：[1]西南大学地理科学学院,重庆400715 [2]三峡库区生态环境教育部重点实验室,重庆400715

出　　处：《河南科学》2016年第8期1317-1321,共5页Henan Science

基　　金：“十二五”国家科技支撑计划课题（2012BAJ23B05）

摘　　要：采用国家环境保护部发布的2014年全国161个城市空气质量指数（AQI）数据,基于克里格插值、三维趋势面等空间分析手段,揭示重点城市空气质量时空分布格局. 结果表明：我国AQI时空分布差异明显,季节特征表现为冬季最高,夏季最低,春季略高于秋季;月峰值出现在1月,9月AQI最低;日AQI高值出现在10：00,低值出现在16：00,白天AQI波动较大,夜间较平稳. 空间分布呈现出从南向北、从沿海向内陆逐渐升高的趋势,且南北差大于东西差;华北生态地区AQI较高,云贵高原生态地区较低.In this paper,urban air quality data issued by the Ministry of environmental protection were summarized.Based on the 161 key cities AQI（Air Quality Index）monitoring data during 2014,we used the Kriging interpolationand trend surface analysis method to study the 161 key cities for the AQI temporal and spatial distribution. Theresults indicated that the temporal and spatial distribution of AQI in China is obvious. The seasonal characteristicsshowed from time to time,which was the most serious in winter,slightest in summer,and spring slightly higher thanautumn. The mass concentration was in January and March,the lowest in September,and the highest massconcentration in a day appeared at 10：00 am,while lowest at 16：00 pm. The mass concentration fluctuated in thedaytime,and kept stable in the night. From the perspective of space,the AQI gradually increased from the south to thenorth,from the coast to the inland,and the difference between the north and south is greater than the east and west.The AQI in ecology of the Yunnan-Guizhou Plateau area is the lowest,while ecological area of North China is the highest.

关 键 词：空气质量 空气质量指数(AQI) 时空分布 克里格插值 趋势面分析 

分 类 号：X51[环境科学与工程—环境工程]