Phenology Dynamics of Dryland Ecosystems Along the North Australian Tropical Transect Revealed by Satellite Solar-Induced Chlorophyll Fluorescence

Wang, C; Beringer, J; Hutley, LB; Cleverly, J; Li, J; Liu, Q; Sun, Y

Phenology Dynamics of Dryland Ecosystems Along the North Australian Tropical Transect Revealed by Satellite Solar-Induced Chlorophyll Fluorescence

Wang, C Beringer, J Hutley, LB Cleverly, J

Li, J Liu, Q Sun, Y

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Publication Type:: Journal Article
Citation:: Geophysical Research Letters, 2019, 46 (10), pp. 5294 - 5302
Issue Date:: 2019-05-28

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Field	Value	Language
dc.contributor.author	Wang, C	en_US
dc.contributor.author	Beringer, J	en_US
dc.contributor.author	Hutley, LB	en_US
dc.contributor.author	Cleverly, J https://orcid.org/0000-0002-2731-7150	en_US
dc.contributor.author	Li, J	en_US
dc.contributor.author	Liu, Q	en_US
dc.contributor.author	Sun, Y	en_US
dc.date.available	2019-04-26	en_US
dc.date.issued	2019-05-28	en_US
dc.identifier.citation	Geophysical Research Letters, 2019, 46 (10), pp. 5294 - 5302	en_US
dc.identifier.issn	0094-8276	en_US
dc.identifier.uri	http://hdl.handle.net/10453/132975
dc.description.abstract	©2019. American Geophysical Union. All Rights Reserved. Accurate phenological characterization of dryland ecosystems has remained a challenge due to the complex composition of plant functional types, each having distinct phenological dynamics, sensitivity to climate, and disturbance. Solar-Induced chlorophyll Fluorescence (SIF), a proxy for photosynthesis, offers potential to alleviate such challenge. We here explore this potential using dryland systems along the North Australian Tropical Transect with SIF derived from Orbiting Carbon Observatory-2. SIF identified the seasonal onset and senescence of Gross Primary Production at eddy covariance sites with improved accuracy over Enhanced Vegetation Index and Near-Infrared Reflectance of terrestrial Vegetation from Moderate Resolution Imaging Spectroradiometer, especially at inland xeric shrublands. At regional scale, SIF depicted both earlier onset and senescence across North Australian Tropical Transect. We hypothesized that SIF outperformed Enhanced Vegetation Index and Near-Infrared Reflectance of terrestrial Vegetation mainly because, unlike reflectance, it is not contaminated by background soil, and its total signal is contributed by mixed plant species in additive way.	en_US
dc.relation.ispartof	Geophysical Research Letters	en_US
dc.relation.isbasedon	10.1029/2019GL082716	en_US
dc.subject.classification	Meteorology & Atmospheric Sciences	en_US
dc.title	Phenology Dynamics of Dryland Ecosystems Along the North Australian Tropical Transect Revealed by Satellite Solar-Induced Chlorophyll Fluorescence	en_US
dc.type	Journal Article
utslib.citation.volume	10	en_US
utslib.citation.volume	46	en_US
utslib.for	0406 Physical Geography and Environmental Geoscience	en_US
utslib.for	0602 Ecology	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
pubs.organisational-group	/University of Technology Sydney/Faculty of Science/School of Life Sciences
utslib.copyright.status	open_access
pubs.issue	10	en_US
pubs.publication-status	Published	en_US
pubs.volume	46	en_US

Abstract:

©2019. American Geophysical Union. All Rights Reserved. Accurate phenological characterization of dryland ecosystems has remained a challenge due to the complex composition of plant functional types, each having distinct phenological dynamics, sensitivity to climate, and disturbance. Solar-Induced chlorophyll Fluorescence (SIF), a proxy for photosynthesis, offers potential to alleviate such challenge. We here explore this potential using dryland systems along the North Australian Tropical Transect with SIF derived from Orbiting Carbon Observatory-2. SIF identified the seasonal onset and senescence of Gross Primary Production at eddy covariance sites with improved accuracy over Enhanced Vegetation Index and Near-Infrared Reflectance of terrestrial Vegetation from Moderate Resolution Imaging Spectroradiometer, especially at inland xeric shrublands. At regional scale, SIF depicted both earlier onset and senescence across North Australian Tropical Transect. We hypothesized that SIF outperformed Enhanced Vegetation Index and Near-Infrared Reflectance of terrestrial Vegetation mainly because, unlike reflectance, it is not contaminated by background soil, and its total signal is contributed by mixed plant species in additive way.

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http://hdl.handle.net/10453/132975