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Journal Article

Journal Article

Evaluation of the Effect of Urban-agriculture on Urban Heat Island Mitigation  [2012]

Eom, K.C., Sejong Institute of Data Analysis, Suwon, Republic of Korea; Jung, P.K., Sejong Institute of Data Analysis, Suwon, Republic of Korea; Park, S.H., Sejong Institute of Data Analysis, Suwon, Republic of Korea; Yoo, S.Y., Hankyong National University, Ansung, Republic of Korea; et al.

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Vegetation can make not only to lower the urban ambient air temperature (UAAT) by crop evapotranspiration (ET) and increasing solar radiation albedo, but also to reduce the urban air pollution by CO₂ uptake and O₂ emission in addition to the reducing ozone concentrations by aid of lower the UAAT. To evaluate the effect of vegetation on urban heat island mitigation (UHIM), the climate change of 6 cities during 30 years are analysed, and the amount of ET, CO₂ uptake, O₂ emission and ozone concentrations are estimated in Korea. The most hot season is the last part of July and the first part of August, and the highest average UAAT of a period of ten days was 35.03℃ during 30 years (1979 - 2008). The mean values of maximum ET of rice and soybean in urban area during urban heat island phenomena were 6.86 and 6.00 mm day-¹, respectively. The effect of rice and soybean cultivation on lowering the UAAT was assessed to be 10.5 and 3.0℃ in Suwon, respectively, whereas the differences between the UAAT and canopy temperature at urban paddy and upland in Ansung were 2.6 and 2.2℃. On the other hand, the urban-garden in Suwon city had resulted in lowering the UAAT and the surface temperature of buildings to 2.0 and 14.5℃, respectively. Furthermore, the amounts of CO₂ uptake by rice and soybean were estimated to be 20.27 and 15.54 kg CO₂ 10a-¹ day-¹, respectively. The amounts of O₂ emission by rice and soybean were also assessed to be 14.74 and 11.30 kg O₂ 10 a-¹ day-¹, re
spectively. As other cleaning effect of air pollution, the ozone concentrations could be also estimated to reduce 21.0, 8.8, and 4.0 ppb through rice-, soybean cultivation, and urban gardening during most highest temperature period in summer, respectively.
From the journal
Korean Journal of Soil Science and Fertilizer
ISSN : 0367-6315

Bibliographic information

Language:
Korean
Type:
Directory
In AGRIS since:
2015
Volume:
45
Issue:
5
Start Page:
848
End Page:
852
All titles:
"Evaluation of the Effect of Urban-agriculture on Urban Heat Island Mitigation"@eng
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Bibliographic information

Language:
Korean
Type:
Directory
In AGRIS since:
2015
Volume:
45
Issue:
5
Start Page:
848
End Page:
852
All titles:
"Evaluation of the Effect of Urban-agriculture on Urban Heat Island Mitigation"@eng