摘要
针对不同高度污染源，研究地表参数对污染物最大小时浓度的影响规律。研究结果表明：（1）当粗糙度增加时，距低架源350m外最大小时浓度先降低后增加；距中等高度源350m外最大小时浓度先增加后降低；高架污染源最大小时浓度逐渐降低。（2）当反照率增加时，距低架源300m外最大小时浓度保持不变；距中等高度源300m外最大小时浓度先增大再减少最后保持不变；距高架源150～450m最大小时浓度逐渐增加，其他范围内保持不变。（3）当波文比增加时，在邻近低中高度污染源区域，最大小时浓度逐渐减小，其他范围保持不变；高架源最大小时浓度保持不变。
The effect of land surface parameters on the maximum hourly concentrations of air pollutants is investigated by using various combinations of land surface parameters. The results indicate that： （ 1 ） For the low source pollution, the maximum hourly pollutant concentration at the receptors outside the range of 350 m from the source decreases initially and then increases when the roughness increases. For the middle source pollution, the maximum hourly pollutant concentration at the receptors outside the range of 350 m from the source increases initially and then decreases when the roughness increases. For the high source pollution, the maximum hourly pollutant concentration at the receptors gradually decreases when the roughness increases; （2） For the low source pollution, the maximum hourly pollutant concentration at the receptors outside the range of 300 m from the source does not change when the albedo increases. For the middle source pollution, the maximum hourly pollutant concentration at the receptors outside the range of 300 m from the source increases initially, then decreases and eventually remains unchanged when the albedo increases. For the high source pollution, the maximum hourly pollutant concentration at the receptors in the range of 150 m to 450 m gradually increases when the albedo increases, and it remains unchanged at other receptors when the albedo increases; （3） For the low and middle source pollution, the maximum hourly pollutant concentration at the receptors near the source gradually decreases when the Bowen ratio increases, and it remains unchanged at other receptors when the Bowen ratio increases. For the high source pollution, the maximum hourly pollutant concentration remains unchanged when the Bowen ratio increases.
出处
《环境影响评价》
2015年第6期57-61,共5页
Environmental Impact Assessment
基金
陕西省自然科学基金(2014JQ2-2009)
中央高校基本科研业务费专项资金(2015gjhz10)
