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[E-2.2 Ecophysiological Research on Adaptation of Tropical Tree Species to Environmental Stress]

[Contact Person]

Yoosuke Matsumoto
Laboratory Chief
Ecophysiology Laboratory, Forest Environment Division
Forestry and Forest Products Research Institute
Ministry of Agricalture, Forestry and Fisheries
P.O. Box 16, Tsukuba Norin Kenkyu Danchi-nai, Ibaraki 305 Japan
Phone +81-298-73-3211(Ext.354), Fax +81-298-73-1542
E-mail YMAT@ffpri.affrc.go.jp

[Total Budget for FY1993-1995]

28,455,000 Yen (FY1994 7,450,000 Yen)

[Abstract]

　Biological processes of tropical tree species in growth and development are strongly influenced by environmental factors. To estimate effects of environmental factors and ecophysiological processes, water relation characteristics of 5 dipterocarp species were studied using P-V method. And light- and temperature- photosynthesis relation of 6 dipterocarp species, photosynthesis and water use efficiency of 17 tropical species, diurnal changes in transpiration rate(Tr), leaf conductance to water vaper(Gw), and water potential on Shorea leprosula and Acacia mangium saplings, diurnal changes in Pn, Tr, Gw, and water potential of 3 dipterocarp species, and diurnal changes in Pn and Gw of Dryobalanops aromatica mature tree were studied.

[Key Words]

Tropical Rain Forest Tree, Dipterocarps, Gas Exchange Rate, Water Relation