| Popis: |
A clean, safe living environment is necessary for people to be happy. However, because there is a lack of awareness of the influences of pollution, it is not easy to understand air contaminants intuitively. Therefore, for the dissemination of information to be effective, city residents must first understand the basics of air pollution. Environmental studies have been conducted in several major Asian cities to evaluate the influence of pollution on global weather conditions, and the results have been made public. This paper reports on Phnom Penh, where official data cannot be obtained. In numerous Asian cities, although SPM concentration is low during the day it increases from dusk to dawn. This is not the case in Phnom Penh. According to an emissions inventory, the main source of SPM in Phnom Penh is residential cooking and unpaved roads. Therefore, the suburbs had a higher SPM value than the urban area in Phnom Penh. On the other hand, the amount of black carbon(BC)in Phnom Penh was very high, - over six times greater than in Tokyo. Because the latest SPM data cannot be obtained easily, it is not possible to discuss city environmental problems in detail. In Phnom Penh, public stations that continuously measure air pollution levels might be necessary. By using the method explained in this report, visual information on the air contaminant distribution in cities can be obtained instantly, without using large-scale expensive equipment. This information will be useful in designing cities and improving the quality of city life in the future. |
