基于变权欧式距离模型的大气环境变化趋势分析

2008年以来德化县在城区推动陶瓷企业使用清洁能源，淘汰了污染较严重的燃料。本文通过建立变权欧式距离模型，分析德化县2005年至2009年改用清洁能源前后城区环境空气变化趋势。变权欧式距离模型评价结果表明，这5年的德化县城区大气环境质量较好，PM10是城区大气环境的主要污染物。自2008年德化县城区陶瓷企业改用清洁能源后，PM10的权重系数略有降低，大气环境质量级别R也变小，城区大气环境质量得到改善。

Analysis on Changing Trend of Air Quality Based on Continental Distance Model with Varying Weight

The ceramics enterprises in Dehua County were promoted to use clean energies since 2008. The continental dis- tance model with varying weight is established to show the changing trend of urban air environment of Dehua County before and af- ter switching clean energy from 2005 to 2009. The evaluation results show that the urban air environment is good during the five years and PM10 is the main pollutant in the urban atmosphere. After switching to clean energy in 2008, the air quality of Dehua County is becoming better. The weight coefficient of PM10 becomes slight low and the atmospheric quality rank R becomes smaller. The city air quality of Dehua County is becoming better.