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Scoping study of correlations
between chlorophyll fluorescence, spectral reflectance and canopy dieback
at Olney State Forest, NSW
Research Supervisor:
Ms Laurie Chisholm
Research Staff:
Ms Laurie Chisholm, Dr Christine Stone (SFNSW Research Division)
Funding:
cost recovery from WAPIS 3.1.c Scoping Study (Wood and Paper Industries Scheme,
Montreal Criterion 3.1.c (national indicator for forest health)
Duration:
1997-1998
Project summary:
Plant senescence, diseases and many long-term stresses result in a loss of chlorophyll content.
Not enough is yet understood about the
peculiarities, specific features and optical properties of a
leaf, much less how these features contribute to a
canopy response. This study was to assess features
of canopy dieback for a mixed forest type (Sydney
Blue Gum (E. saligna) and Grey Ironbark
(E. paniculata) at Olney State Forest near Wyong, NSW. Field
and analytical work enabled detailed leaf
phenology characteristics to be measured in conjunction
with chlorophyll fluorescence and spectral reflectance
for a range of healthy to very stressed trees for the
two species referred to. Objectives of the study are: (1)
to understand in more detail the specific
spectral features of the plant photosynthetic tissues
through examination of the reflectance spectra of
young, mature and stressed eucalypt leaves; and (2)
to establish correlations amongst spectral
reflectance and chlorophyll fluorescence as indicators of
tree health.
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