Solar Radiation and Productivity in Tropical Ecosystems - PowerPoint PPT Presentation

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Title:

Solar Radiation and Productivity in Tropical Ecosystems

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... diffusion and respiration efficiencies Geometric efficiency Atmospheric Efficiency Spectral Efficiency PAR to ... Energy conservation Rn =LE + H ... – PowerPoint PPT presentation

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Title: Solar Radiation and Productivity in Tropical Ecosystems


1
Solar Radiation and Productivity in Tropical
Ecosystems
  • J. L. Monteith

2
Thermal Dynamics Law
  • First Law of Thermal Dynamics Energy
    conservation
  • RnLE H GA
  • Second Law of Thermal Dynamics Production of
    useful energy must be accompanied by
    simultaneous waste of heat.

3
Components of Efficiency
  • eegeaeseqeieder
  • Where the components include geometric,
    atmospheric, spectral, quantum, interception,
    diffusion and respiration efficiencies

4
Geometric efficiency
5
Atmospheric Efficiency
6
Spectral Efficiency
  • PAR to total radiation ratio 50

7
Quantum Efficiency
  • Theoretical maximum 1 Carbohydrate need 10
    quanta.

8
Diffusion Efficiency
9
Interception Efficiency
10
Respiration Efficiency
W standing dry weight (g/m2) P photosynthesis
rate (g/m2/day)
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