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충주시 토지이용형태별 미세먼지 농도와 가로수의 생리적 변화에 관한 연구
백철종 ( Cheol Jung Baek ),윤용한 ( Yong Han Yoon ),박봉주 ( Bong Ju Park ),김원태 ( Won Tae Kim ) 한국녹지환경디자인학회 2007 녹지환경학회지 Vol.3 No.2
This study measured the physiological variation of roadside tree and fine paticle concentration according to variation land-use types(commercial districts, residential districts, greenspace) of Chungju and obtained the following results. 1. To recognize how the variation of daily fine particle in Chungju affects the land-use types, this study compared and examined the variation of density in commercial districts, residential districts, greenspace. As a result, density of fine particle was high in the order of commercial districts>residential districts>greenspace and daily average density of fine particle in commercial districts for 2005 was found to exceed over 2 times of National Environmental Standard(50μg/m3), requiring measures against this. 2. With regard to seasonal density feature of fine particle, commercial districts recorded 74.3μg/m3 at spring, 31.2μg/m3 at summer, 40.7μg/m3 at fall and 44.7μg/m3 at winter; residential districts recorded average density of 66.2μg/m3 at spring, 27.7μg/m3 at summer, 38.0μg/m3 at fall and 37.5μg/m3 at winter. Greenspace recorded 40.5μg/m3 at spring, 17.8μg/m3 at summer, 26.8μg/m3 at fall and 27.2μg/m3 at winter. In terms of season, density was highest at spring, followed by winter, fall and summer. 3. With regard to variation in density of fine particle per wind direction, wind from north(N) recorded the highest density, followed by wind from west-north-west(WNW), wind from south-west(SW) or west-south-west(WSW), demonstrating that relatively high density was measured mainly at wind from northwest or southwest. It is determined that northwest or southwest direction plays a main role in pollution by fine particle in Chungju. 4. With regard to variation in density of fine particle according to wind velocity, density increases gradually up to wind velocity of about 2.5m/s and no more change was found over that. 5. As a result of analyzing photosynthesis ability and contents of chlorophyll to clarify effects of air pollution at Chungju downtown on plants, it was found about that photosynthesis ability and contents of chlorophyll of Ginkgo biloba at parks were found to be higher than those at commercial districts. With regard to stomatal conductance its decrease in commercial districts showed similar tendency as that of photosynthesis, showing positive correlation between speed of photosynthesis and stomatal conductance.
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