The dry deposition of sulfur dioxide on a loblolly pine plantation |
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| Institution: | 1. School of Atmospheric Sciences, Sun Yat-sen University, Key Laboratory of Tropical Atmosphere-Ocean System, Ministry of Education, and Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai 519082, China;2. Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China;3. Guangdong-Hongkong-Macau Joint Laboratory of Collaborative Innovation for Environmental Quality, Institute for Environmental and Climate Research, Jinan University, Guangzhou 510632, China;1. State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China;2. School of Science, China University of Geosciences, Beijing 100083, China;3. Center for Atmospheric Environment Research, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences 400714, China;4. School of Mechanical Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617, China;5. College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, China;6. Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China;7. Institut de Combustion, Aérothermique, Réactivité et Environment (ICARE), CNRS (UPR 3021), Orléans 45071, France;1. Air Quality Research Division, Science and Technology Branch, Environment and Climate Change Canada, Toronto, ON M3H 5T4, Canada;2. Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, ON M5S 2E4, Canada |
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| Abstract: | A concentration gradient/resistance model approach was used to determine the flux density, deposition velocity, and transport resistances for sulfur dioxide (SO2 ) between the atmosphere and a loblolly pine (Pirms taeda L.) plantation. Measurements were made on 54 clear to partly sunny days during the period from June 1982 to May 1983. For this stand and these days, the average daylight flux density was 0.052 μg m−2s−1 and the deposition velocity for SO2 was 0.72±0.65 cms−1. The average transport resistance for SO2 includes the aerodynamic resistance (ra), canopy resistance (rc), and internal resistance corrected for solubility (rir). The values for these resistances were 15 ±4, 127 ±94 and 14+-39 s m−1, respectively. |
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