A GIS-based Study for Optimizing the Total Emission Control Strategy in Lanzhou City |
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| Authors: | Xingqin An Anqing Ma Daobin Liu |
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| Affiliation: | (1) Centre for Atmosphere Watch and Services (CAWAS), CMA, Chinese Academy of Meteorological Sciences (CAMS), Beijing, 100081, China;(2) College of Environmental Sciences, Peking University, Beijing, 100871, China;(3) Department of Environmental Science and Engineering, Ocean University of China, Qingdao, Shandong, 266003, China |
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| Abstract: | A geographic information system (GIS)-based approach with spatial analysis advantages was developed to optimize the total emission control scheme on air pollution in Lanzhou, combined with Models-3 modeling system and a linear programming model. GIS system is mainly used for establishing a multifactor assessment model to quantitatively divide environmental functional zone, and also used for selecting control sites in linear programming model. The results show that most of the urban area belongs to the second type of function, which is 122.8 km2 occupying about 76.5% and the third type of about 32.9 km2 occupying 20.5%. To reach the air quality up to the national standard in the entire control area, some large-emission factories need to cut emissions from 19% to 27%. For small but low-emission height sources, the cut may be as high 40%. The improvement of the ecological environment is urgently needed for controlling the background particle pollution in Lanzhou city. |
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| Keywords: | Air pollution Total emission control strategy Models-3 modeling system Linear programming model GIS Lanzhou city |
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