| Budget Amount *help |
¥16,770,000 (Direct Cost: ¥12,900,000、Indirect Cost: ¥3,870,000)
Fiscal Year 2019: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2018: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2017: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2016: ¥8,580,000 (Direct Cost: ¥6,600,000、Indirect Cost: ¥1,980,000)
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| Outline of Final Research Achievements |
Retrieval of leaf or canopy scale structural and biochemical parameters from reflected spectra has been widely attempted in current, while few have ever set eyes on estimating physiological properties yet. In this study, we have challenged to reveal the complicated effects on canopy scale reflectance resulted from within-canopy variations of structural, biochemical and physiological properties. Both empirical approaches and radiative transfer model-based approaches were applied for data analysis, from which indices for tracing photosynthetic parameters (Vcmax and Jmax) and transpiration and PLSR models for transpiration were developed. Sensitivity analysis has further revealed relative contributions of different parameters on each wavelength, from which the bands with more effects from physiological properties were determined. The results obtained from this study should help to pave a way for assessing ecosystem-scale functions from reflected information.
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