Func_Multi_Layer_Photosynthesis_Model: Func_Multi_Layer_Photosynthesis_Model

Description Usage Arguments Author(s)

View source: R/Func_MultiLayer_Photosynthesis.R

Description

Canopy multi-layer photosynthesis model

Usage

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Func_Multi_Layer_Photosynthesis_Model(FLAG, SZA, Press, PAR0, LAI, Tleaf,
  Tleaf_diff, ambCO2, Vcmax0_25, CI, Topt, Nlayers, Phi_sun, PSII_sun,
  Phi_shade, PSII_shade, sf_sun, sf_shade, sf)

Arguments

FLAG

Model version controller; 0–Lloyd et al. 2010 Model for Vcmax-LAI relationship; 1–Mercado et al. 2006 Model for Vcmax-LAI relationship in the tropics

SZA

solar zenith angle, in degrees

Press

Atmospheric pressure in Pa

PAR0

measured top canop irradiance, in umol/m2/s

LAI

total canopy LAI

Tleaf

Leaf temperature in degrees C

Tleaf_diff

Difference in leaf temperature between sunlit and shaded leaf fractions in degrees C

ambCO2

ambient CO2 concentration, in ppm

Vcmax0_25

Vcmax at reference 25 degrees C for top-of-canopy leaves

CI

Clumping inedx; 0.63 for tropical evergreen forests (Chen et al, 2005)

Topt

optimal leaf temperature for tropical evergreen forests, from Lloyd and Farquhar, 2008

Nlayers

number of layers for Multi-Layer Photosynthesis Modeling

Phi_sun

the curvature factor for light response curves for sunlit leaves

PSII_sun

maximum quantum yield for sunlit leaves

Phi_shade

the curvature factor for light response curves for sunlit leaves

PSII_shade

maximum quantum yield for shade leaves

sf_sun

scaling factor for sunlit leaves, due to leaf age effect

sf_shade

scaling factor for shade leaves, due to leaf age effect

sf

scaling factor due to leaf age effect, assuming no phenological partitioning across vertical canopy profile

Author(s)

Jin Wu

Shawn Serbin


TEST-BNL/R-Canopy_Photosynthesis documentation built on May 10, 2017, 3:39 p.m.