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| 2001 年至2010 年中国三大城市群中几个典型城市的API变化特征 | |
| 引用本文： | 孙丹,杜吴鹏,高庆先,师华定,轩春怡.2001 年至2010 年中国三大城市群中几个典型城市的API变化特征[J].资源科学,2012,34(8):1401-1407. |
| 作者姓名： | 孙丹 杜吴鹏 高庆先 师华定 轩春怡 |
| 作者单位： | 1. 中国科学院大气物理研究所中层大气和全球环境探测重点实验室,北京,100029 2. 北京市气候中心,北京,100089 3. 中国环境科学研究院,北京,100012 |
| 基金项目： | 国家环保公益性行业科研专项(编号:201109065);国家自然科学基金项目(编号:41105103);国家973重点基础研究发展计划(编号:2010CB428506)。 |
| 摘 要： | 利用2001年-2010年京津冀、长三角和珠三角三大城市群9个代表城市近10年的每日API数据，研究了各个城市群和城市APl年际和季节变化特征并统计了每年轻度污染及以上级别的天数，结果表明：近10年三大城市群代表城市的API总体呈下降趋势，其中京津冀城市群API最高，下降也最为明显，而珠三角城市群API最低，下降最不显著；各城市年均和季节API随纬度由北向南逐渐降低，城市群内部距离海洋近的城市API较低；三大城市群API呈现冬春季高、夏季低的季节变化特征；北京和石家庄近10年年均污染天数最多，珠海污染天数最少，2001年-2008年三大城市群城市间的污染天数差距较大，2008年之后污染天数差距明显缩小，API有趋于同步的变化趋势，大气污染呈现一定的区域同质化特征。在新的环境空气质量指数（AQI）实施之前系统分析三大城市群近10年API的变化特征可为日后科学评价和对比两种指数提供一定参考。 |
| 关 键 词： | 城市群 空气污染指数(API) 污染天数 变化特征 |
Change Characteristics of API of Several Typical Cities within Three Urban Agglomerations in China from 2001 to 2010 |
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| SUN Dan,DU Wupeng,GAO Qingxian,SHI Huading and XUAN Chunyi.Change Characteristics of API of Several Typical Cities within Three Urban Agglomerations in China from 2001 to 2010[J].Resources Science,2012,34(8):1401-1407. | |
| Authors: | SUN Dan DU Wupeng GAO Qingxian SHI Huading and XUAN Chunyi |
| Institution: | Key Laboratory of Middle Atmosphere and Global Environment Observation, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China;Beijing Municipal Climate Centre, Beijing Meteorological Bureau, Beijing 100089, China;Chinese Research Academy of Environmental Sciences, Beijing 100012, China;Chinese Research Academy of Environmental Sciences, Beijing 100012, China;Beijing Municipal Climate Centre, Beijing Meteorological Bureau, Beijing 100089, China |
| Abstract: | Due to the enormous differences in economic development level, climate, geography and other natural conditions, the atmospheric pollution and change characteristics of air quality present diverse trends in different regions. Air pollution index (API) is released daily for some important cities and it serves as a useful reference for public atmospheric environment researches. Beijing-Tianjin-Hebei region, Yangtze River Delta and Pearl River Delta are the most important and most developed urban agglomerations in China. Therefore, studying their air quality characteristics and clarifying the API similarities as well as differences among different cities and urban agglomerations will play an active role in amending environmental protection policies and technical standards and in providing policy reference for other cities. API data used in this study come from the announced results of State Department of Environmental Protection. In this paper, daily API data of nine typical cities within the above three urban agglomerations in the last decade were used to research API’s annual and seasonal change characteristics and to calculate days with low pollution level or above every year. In addition, the reasons leading to pollution change were analyzed and discussed. The results show that API had declined clearly in typical cities of three urban agglomerations in the last decade as a whole; API of Beijing-Tianjin-Hebei urban agglomeration is the highest and presents the most obviously decline trend, while the Pearl River Delta urban agglomeration has the lowest API and the least prominent decline; annual and seasonal API for all cities decrease from north to south with latitude, and the API of a city near the sea is lower than other cities; the API of three urban agglomerations are high in winter and spring and lowe in summer; the pollution days in Beijing and Shijiazhuang are the most, while in Zhuhai are the least; the pollution days have large gaps among three urban agglomerations during 2001-2008, but the gaps narrow significantly after 2008; the API of all typical cities have the trend of synchronous development and atmospheric pollution presents regional homogeneous characteristics in a certain extent. Analyzing the API change trend and characteristics of three urban agglomerations in the last decade systemically can provide certain reference for scientific evaluation and comparison of two indices in the future. |
| Keywords: | Urban agglomeration Air Pollution Index (API) Pollution days Change characteristics |
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