基于污染损害指数的环境空气质量评价与分析

采用基于污染损害指数的普适公式,对粤港珠江三角洲区域2007年环境空气质量进行了评价,并对污染损害指数空间分布与时间变化进行了分析和探讨。研究结果表明,粤港珠江三角洲区域环境空气污染损害指数为5.79,环境空气质量为二级,属于轻污染,并且夏季优于秋冬和春季,与气象条件密切相关。粤港珠江三角洲区域首要污染物为PM10,其次为NO2。珠海、香港、深圳空气质量较好,东莞、佛山空气质量最差,这与污染源分布、污染物扩散条件以及城市间空气污染的相互影响有关。

A universal formula based on pollution harm index was used to assess air quality of the Pearl River Delta region, 2007. And pollution harm index＇s spatial distribution and temporal variation were analyzed. The research results showed that, pollution harm index of the Pearl River Delta region was 5.79 which means air quality reach the second class, and air quality in summer was better than that in winter, autumn and spring for weather conditions. PM 10 was the first pollutant while Nitrogen dioxide was the second in the Pearl River Delta region. Air quality of Zhuhai, Hongkong and Shenzhen was the best, while air quality of Dongguan, Foshan was the worst for the reason of pollution source distribution, diffusion conditions of atmospheric pollution and the interaction and mutual contribution of urban air pollution among these cities.