47
Table 3.1 List of key foliar functional traits that can be estimated from imaging spectroscopy
Functional
characterization
a Trait
Example of functional
role
Example Citations
Primary
Foliar N (% dry
mass or area
based)
Critical to primary
metabolism (e.g.,
Rubisco).
Johnson et al. (1994),
Gastellu- Etchegorry et al. (1995),
Mirik et al. (2005), Martin et al.
(2008), Gil-Pérez et al. (2010),
Gökkaya et al. (2015), Kalacska
et al. (2015), Singh et al. (2015)
Foliar P (% dry
mass)
DNA, ATP synthesis
Mirik et al. (2015), Mutanga
and Kumar (2007), GilPérez et al. (2010), Asner et al.
(2015)
Sugar (% dry
mass)
Carbon soiree
Asner and Martin (2015)
Starch (% dry
mass)
Storage compound,
carbon reserve
Matson et al. (1994)
Chlorophyll-total
(ng g
–1 )
Light-harvesting
capability
Johnson et al. (1994), ZarcoTejada et al., (2000a); Moorthy
et al., (2008); Gil-Pérez et al.
(2010), Zhang et al. (2008)
Carotenoids (ng
g
-1
)
Light harvesting,
antioxidants
Datt (1998), Zarco-Tejada et al.
(2000a)
Other pigments
(e.g.,
anthocyanins; ng
g
–1
)
Photoprotection. NPQ van den Berg and Perkins
(2005)
Water content (%
fresh mass)
Plant water status
Gao and Goetz (1995),
Gao (1996), Serrano et al.,
(2000), Asner et al. (2015)
Physical
Leaf mass per
area (g m
–2 )
Measure of plant
resource allocation
strategies
Asner et al. (2015),
Singh et al. (2015)
Fiber (% dry
mass)
Structure,
decomposition
Mirik et al. (2005),
Singh et al. (2015)
Cellulose (% dry
mass)
Structure,
decomposition
Gastellu-Etchegorry et al.
(1995), Thulin et al. (2014),
Singh et al. (2015)
Lignin (% dry
mass)
Structure,
decomposition
Singh et al. (2015)
Metabolism
Vcmax (μmol m
–2
s
–1
)
Rubisco-limited
photosynthetic capacity
Serbin et al. (2015)
Photochemical
Reflectance Index
(PRI)
Indicator of nonphotochemical
quenching (NPQ) and
photosynthetic
efficiency, xanthophyll
cycle
Gamon et al. (1992), Asner et al.
(2004)
Fv/Fm
Photosynthetic capacity Zarco-Tejada et al. (2000c)
(continued)
3 Scaling Functional Traits from Leaves to Canopies