| Budget Amount *help |
¥17,420,000 (Direct Cost: ¥13,400,000、Indirect Cost: ¥4,020,000)
Fiscal Year 2022: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2021: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2020: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2019: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2018: ¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
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| Outline of Final Research Achievements |
Species diversity of canopy structure and eco-physiological functions from leaf to tree level were examined for major tree species in Pacific Ocean-type cool temperate forest in Japan. Although species diversity of crown-level leaf area, photosynthesis and transpiration were generally small, there were large inter-species variations in within-crown structure and functions, such as three-dimensional leaf area distribution and light use efficiency. With respect to temporal heterogeneity of structure and functions, we compared vegetation indices derived from drone RGB imagery with ground-observed leaf phenology and stem sap flow. We revealed that crown thickness has significant impact on drone-derived leaf phenology and that UAV image is effective for evaluating species diversity of transpiration phenology. We also revealed that Fagus crenata markedly changes leaf distribution according to soil water conditions, whereas the other species did not show such trend.
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