RESEARCH ITEM A03
Elucidation of the Effects of Aerosol on Plants

The objective of Research Item A03 is to clarify the effects of aerosol on plants by experimental studies and field survays.

To evaluate aerosol impacts on plants in Asia, the following must be comprehensively studied:
(1) the mechanism in the adsorption of aerosol on the leaves or needles of forest tree species and that in the absorption of aerosol into the leaves
  or needles of forest tree species by bio-imaging technique using microscopes (P08);
(2) the effects of aerosol on growth, physiological functions such as photosynthesis, water status and nutrient status of East Asian forest tree species
  and its species difference (P09);
(3) improve measurement techniques of aerosol deposition and apply them to the field studies in corroboration with P11 (P10); and
(4) dry deposition of aerosol components, especially sulfate, nitrate and black carbon, onto three forests located in tropical (Thailand),
  temperate (Nagano, Japan) and frigid (Hokkaido, Japan) zones by micrometeorological measurement methods (P11).

    

P08 Elucidation of the mechanisms of absorption and adsorption of aerosol in forest tree species
Group Composition
Ryo Funada (Professor, Institute of Symbiotic Science and Technology, Tokyo University of Agriculture and Technology)

Yuzo Sano (Assistant Professor, Graduate School of Agriculture, Hokkaido University)
Katsushi Kuroda (Researcher, Forest and Forest Products Research Institute)

Main Research Contents
・The mechanism in the adsorption of aerosol on the leaves or needles of forest tree species by bio-imaging technique using microscopes
・The mechanism in the absorption of aerosol into the leaves or needles of forest tree species by bio-imaging technique using microscopes




P09 Elucidation of the effects of aerosol on forest tree species and its species difference
Group Composition
Takeshi Izuta (Professor, Institute of Symbiotic Science and Technology, Tokyo University of Agriculture and Technology)
Atsushi Ishida (Chief Senior Researcher, Forest and Forest Products Research Institute)
Kenichi Yazaki (Researcher, Forest and Forest Products Research Institute)
Kyotaro Noguchi (Researcher, Forest and Forest Products Research Institute)  
Wuled Lenggoro (Associate Professor, Institute of Symbiotic Science and Technology, Tokyo University of Agriculture and Technology)


Main Research Contents

・Manufacture of aerosol exposure chambers to investigate the effects of aerosol on trees for several years
・Elucidation of the effects of aerosol on growth, physiological functions such as photosynthesis, water status and nutrient status
 of East Asian forest tree species and its species difference




P10 Development of the methods for the evaluation of deposition amount and dynamics of aerosol in forest ecosystem
Main Research Contents

・Evaluate dry deposition of aerosol components on a forest-ecosystem (research station FM Tamakyuryo, Tokyo, Japan)
 closely attached to a developed city
・Integrate different measurement methods; passive & active sampling method, open pass FTIR spectroscopy, foliar rinsing method,
 forest through fall method
・Apply the improved measurement techniques of aerosol deposition by P10 to FM Tamakyuryo
・Analyze mechanisms of aerosol deposition onto leaf surface in corroboration with P08 and P09


Group Composition
Hiroshi Hara (Professor, Faculty of Agriculture, Tokyo University of Agriculture and Technology)

Masao Takayanagi (Professor, Institute of Symbiotic Science and Technology, Tokyo University of Agriculture and Technology)
Sonoko Dorothea Kimura (Associate Professor, Institute of Symbiotic Science and Technology, Tokyo University of Agriculture and Technology)
Hiroshi Okochi (Professor, Graduate School of Creative Science and Engineering, Waseda University)



       


P11 Evaluation of deposition amount and dynamics of aerosol in East Asian forest ecosystems
Main Research Contents

・Evaluate dry deposition of aerosol components, especially sulfate, nitrate and black carbon, onto three forests located in tropical (Thailand),
 temperate (Nagano, Japan) and frigid (Hokkaido, Japan) zones by micrometeorological measurement methods
・Improve measurement techniques of aerosol deposition and apply them to the field studies in corroboration with P10
・Analyze mechanisms of aerosol deposition onto the forests and dynamics of aerosol components in the forest ecosystems
 by using the measurement data obtaned.
・Assess the impact of aerosol depositions to the forest ecosystems in corroboration with P08 and P09.


Group Composition
Kazuhide Matsuda (Associate Professor, School of Sciences and Engineering, Meisei University)
Hiroyuki Sase (Chief Senior Researcher, Acid Deposition and Oxidant Research Center)
Naoto Murao (Associate Professor, Graduate School of Engineering Hokkaido University)
Kentaro Hayashi (Senior Researcher, National Institute for Agro-Environmental Sciences)
Izumi Noguchi (Senior Researcher, Hokkaido Institute of Environmental Sciences)
Akira Takahashi (Senior Research Scientist, Central Research Institute of Electric Power Industry)
Kentaro Takagi (Assistant Professor, Field Science Center for Northern Biosphere, Hokkaido University)