The impacts of urbanization on air quality over the Pearl River Delta in winter: roles of urban land use and emission distribution
The impacts of urbanization on air quality over the Pearl River Delta in winter: roles of urban land use and emission distribution
复制标题
城市化对珠江三角洲冬季空气质量的影响：城市土地利用和排放分布的作用
DOI：
10.1007/s00704-013-0982-1
复制
发表时间：
2014-07-01
影响因子：
3.4
通讯作者：
Zhang, Wei
中科院分区：
文献类型：
--
作者：
Chen, Bin;Yang, Shuai;Zhang, Wei
本文通过理想而现实的数值实验，探讨了珠江三角洲地区冬季土地利用和排放分布变化对空气质量的相对影响。实验是使用拉格朗日粒子输运和扩散模式FLEXPART与天气研究和预报模式在不同的情况下。实验结果表明，仅土地利用变化引起的日平均大气污染物浓度（以SO2浓度表示）变化最大可达2 × 10（-6）g·m（-3），而人为排放分布引起的浓度变化最大可达6 × 10（-6）g·m（-3）。这些结果反映出，虽然土地利用变化对空气质量的影响不可忽视，但排放分布对空气质量的影响比土地利用变化更显著。这对珠三角地区城市大气污染控制的决策者，特别是城市规划中合理排放的空间安排提供了明确的启示。
In this study, ideal but realistic numerical experiments are performed to explore the relative effects of changes in land use and emission distribution on air quality in the Pearl River Delta (PRD) region in winter. The experiments are accomplished using the Lagrangian particle transport and dispersion model FLEXPART coupled with the Weather Research and Forecasting model under different scenarios. Experiment results show that the maximum changes in daily mean air pollution concentration (as represented by SO2 concentration) caused by land use change alone reaches up to 2 x 10(-6) g m(-3), whereas changes in concentrations due to the anthropogenic emission distribution are characterized by a maximum value of 6 x 10(-6) g m(-3). Such results reflect that, although the impacts of land use change on air quality are non-negligible, the emission distribution exerts a more significant influence on air quality than land use change. This provides clear implications for policy makers to control urban air pollution over the PRD region, especially for the urban planning in spatial arrangements for reasonable emissions.