This research assessed the disparity in anion generation according to the vertical structure of a Zelkova Serrata tree for the purpose of creating a pleasant and green city environment. Measurements for the study were conducted between July and August of 2014 in Chung-ju in the central region of the Republic of Korea. The average anion generation of vertical structure trees during active photosynthesis periods was: L Section (839.0 ea/cm3) > M Section (664.6 ea/cm3) > U Section (472.0 ea/cm3). According to DMRT analysis, significant difference was found in the average between the L, or M Locations and the U Locations. During dormant photosynthesis periods, records showed that the anion production at the M Location (1,212.5 ea/cm3) > L Location (1,050.4 ea/cm3) > H Location (844.1 ea/cm3), According to DMRT analysis, the difference within each location was significant for α=0.05. In a comprehensive analysis of the weather factors in each vertical structure, anion generation during active photosynthesis periods showed a positive correlation with solar radiation and a negative correlation with wind speed. Dormant photosynthesis periods showed negative correlations with both solar radiation and temperature, and positive correlations with relative humidity and wind speed. Predictions from a multicenter retrospective study showed that during active photosynthesis periods, Y1 = 282.443X1 + 512.07, and Y2 = 314.337X1 + 16.913X2, while during dormant photosynthesis periods, Y1=391.009X1 + 840.043, and Y2=351.412X1 + 32.765X2.

Abstract
 1. Introduction
 2. Materials and Method
  2.1. Selection of tree
  2.2. Method of measurement and analysis
 3. Result
  3.1. Weather factors and anion generation duringactive photosynthesis periods
  3.2. Weather factors and anion generation duringdormant photosynthesis periods
  3.3. Anion generation due to vertical structures
 4. Conclusions and Discussion
 Acknowledgements
 REFERENCES

• Jeong-Ho Kim(Department of Green Technology Convergency, Konkuk University)
• Deuk-Kyun Oh(Department of Forest Science, Konkuk University)
• Yoo-Hwan Seo(Graduate school of Horticulture, Chiba University)
• Jae-Hyeon Park(Department of Forest Science, Konkuk University)
• Yong-Han Yoon(Department of Green Technology Convergency, Konkuk University) Corresponding author