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Ability of the Photochemical Reflectance Index to Track Light Use Efficiency for a Sub-Tropical Planted Coniferous Forest
2015
Remote Sensing
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This study was devoted to investigating the ability of the photochemical reflectance index (PRI) to track LUE variations for a sub-tropical planted coniferous forest in southern China using tower-based ...
Light use efficiency (LUE) models are widely used to estimate gross primary productivity (GPP), a dominant component of the terrestrial carbon cycle. Their outputs are very sensitive to LUE. ...
Many thanks to three anonymous reviewers who provided helpful comments to the improvement of the manuscript. ...
doi:10.3390/rs71215860
fatcat:tzbsuhegrbh4hmjrlhvfqwuolu
Modeling biogenic emissions of isoprene: exploration of model drivers, climate control algorithms, and use of global satellite observations
2001
Atmospheric Environment
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The NASA-CASA model results indicate that the annual isoprene flux from terrestrial plant sources is 559 Tg C: Three ecosystem types, broadleaf evergreen forest, dry tropical forest, and wooded grassland ...
the largest portion of total biogenic flux to the global atmosphere is emitted from ecosystems that are mainly light-limited for isoprene emissions. ...
Acknowledgements This work was supported by a National Research Council Associate Fellowship to Susan Alexander, and by the NASA Earth Observing System Interdisciplinary Science Program, Grant number MDAR ...
doi:10.1016/s1352-2310(01)00390-9
fatcat:wbxzdibvdvg57btgvmcunsb46y
Evaluation of Different Methods for Estimating the Fraction of Sunlit Leaves and Its Contribution for Photochemical Reflectance Index Utilization in a Coniferous Forest
2019
Remote Sensing
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This study intended to apply the photochemical reflectance index (PRI) to track LUE or APAR variations in a subtropical coniferous forest using tower-based PRI and GPP measurements. ...
To improve the ability of using PRI to track LUE or APAR, a two-leaf approach differentiating sunlit and shaded leaves was used to process the remote sensing and flux data. ...
Materials and Methods
Field Measurements We observed the CO 2 flux and multi-angle canopy spectral reflectance of a sub-tropic mature evergreen coniferous forest stand on a tower at Qianyanzhou Experimental ...
doi:10.3390/rs11141643
fatcat:7tffse2h6rfpbeobqjhodcyofq
Leaf optical properties and dynamics of photosynthetic activity
2018
Dissertationes Forestales
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This was true for the photochemical reflectance index (PRI), which failed to detect zeaxanthin-independent processes behind the thermal dissipation of the absorbed PAR. ...
Due to the difficulties of directly measuring needle PAR absorption, PAR reflectance was used as a proxy of PAR absorption. ...
When a dark-adapted leaf is exposed to visible radiation, the photochemical pathway uses the absorbed excitation energy at sub-optimal rates because of differences in the activation rates of the light-dependent ...
doi:10.14214/df.247
fatcat:xi5rleqmgvh7fls7oj3bdff6bi
Relationship between Light Use Efficiency and Photochemical Reflectance Index Corrected Using a BRDF Model at a Subtropical Mixed Forest
2020
Remote Sensing
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In this study, tower-based PRI and eddy covariance (EC) based LUEs were used to explore the ability of PRI to track LUE variations in a subtropical, evergreen mixed forest in South China. ...
The photochemical reflectance index (PRI) is based on reflectance at 531 and 570 nm, which reflects the xanthophyll cycle process of plants under different radiation conditions, and makes LUE related to ...
Conflicts of Interest: The authors declare no conflict of interest. ...
doi:10.3390/rs12030550
fatcat:om77in52h5efxgm4sdxsreyl7y
The recreational value of forests under different management systems
2018
New forests
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on soil (using light-weight machines, or using rubber tracks), by reducing the surface area that is disturbed (performing localised site preparation), and reducing the number of machine trips in the stand ...
The species composition was determined and tree diversity index was calculated using Shannon Index.
RESULTS: A total of 20 tree species was mapped and identified. ...
There is current interest in re-evaluating the choices of planting stock used in woodland creation to increase the adaptive capacity of forests, for instance by sourcing seed from further south. ...
doi:10.1007/s11056-018-9663-3
fatcat:7m3t4iiqbveynkk6razrpbrnlm
The ecology of even-aged forest plantations
1979
Forest Ecology and Management
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Evans
ACKNOWLEDGEMENTS The magnitude of the study which we prepared has led to a major cooperative effort which, besides the Research Branch of the Woods and Forests Department (D.W.F.), includes three ...
The process imposed some restrictions on the use of accepted conventions for abbreviations, symbols and units of measurement. ...
In certain sub-tropical regions the maximum for forests may be nearer 50 Mt/ha/yrless than C4 tropical grasses (Dawkins 1963; Bevege 1976; Fig. 2) . ...
doi:10.1016/0378-1127(79)90058-6
fatcat:x77pkqmbqjd5vnoqwmv4cqdfvi
The ecology of even-aged forest plantations
1981
Biological Conservation
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Evans
ACKNOWLEDGEMENTS The magnitude of the study which we prepared has led to a major cooperative effort which, besides the Research Branch of the Woods and Forests Department (D.W.F.), includes three ...
The process imposed some restrictions on the use of accepted conventions for abbreviations, symbols and units of measurement. ...
In certain sub-tropical regions the maximum for forests may be nearer 50 Mt/ha/yrless than C4 tropical grasses (Dawkins 1963; Bevege 1976; Fig. 2) . ...
doi:10.1016/0006-3207(81)90038-0
fatcat:t5wi7lma25e5hoqa5d4xbhfz5a
Linking water and carbon cycles: modeling latent heat exchange and dissolved organic carbon
2016
Dissertationes Forestales
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One linkage of these cycles is through the water use efficiency of photosynthetic production its interactions with drought, and its possible changes. ...
To be presented, with the permission of the Faculty Agriculture and Forestry of the University of Helsinki, for public criticism in auditorium ls2, Latokartanonkaari 7, on 8th of April, 2016, at 12 o'clock ...
We are grateful from the possibility to utilized resources and data that are funded by Fluxnet-Canada, AmeriFlux and US National Science Foundation. ...
doi:10.14214/df215.htm
fatcat:kfnfo3jwsjhkhb4y76okt6ovm4
Linking water and carbon cycles: modeling latent heat exchange and dissolved organic carbon
2016
Dissertationes Forestales
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One linkage of these cycles is through the water use efficiency of photosynthetic production its interactions with drought, and its possible changes. ...
To be presented, with the permission of the Faculty Agriculture and Forestry of the University of Helsinki, for public criticism in auditorium ls2, Latokartanonkaari 7, on 8th of April, 2016, at 12 o'clock ...
We are grateful from the possibility to utilized resources and data that are funded by Fluxnet-Canada, AmeriFlux and US National Science Foundation. ...
doi:10.14214/df.215
fatcat:n4l3woxrfnamlpiyxjxl6c53ju
A review of global environmental mercury processes in response to human and natural perturbations: Changes of emissions, climate, and land use
2018
Ambio
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Similarly, Rydberg et al. (2015) documented how a climate-induced change from deciduous to coniferous forests around 5700 years BP led to reduced soil erosion and increased transport of DOC-bound Hg ...
As a result, up to 50% of total global wet Hg II deposition has been predicted to occur to tropical oceans. ...
Kirk has been a research scientist with the Aquatic Contaminants Research Division of Environment and Climate Change Canada at the Canada Centre for Inland Waters since 2009. ...
doi:10.1007/s13280-017-1004-9
pmid:29388126
pmcid:PMC5794683
fatcat:iygrvgibdndfvmkjo5u7rowb7i
Technologies and perspectives for achieving carbon neutrality
2021
The Innovation 2(4)
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mitigating climate change -This review presents the current state, opportunities, challenges, and perspectives of technologies related to achieving carbon neutrality ll www.cell.com/the-innovation ...
Carbon neutrality may be achieved by reforming current global development systems to minimize greenhouse gas emissions and increase CO 2 capture -Harnessing the power of renewable and carbon-neutral resources ...
growth and greater C sequestration in forests because multilayered canopies will occupy a range of light environments, resulting in high light acquisition and light-use efficiency. 180, 181 Since the ...
doi:10.18154/rwth-2022-01529
fatcat:ynxm22tnqfbl5oesuea6j2725y
Long-range aerosol transport from Europe to Istanbul, Turkey
2006
Atmospheric Environment
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Needlf.
24
Snow or Ice
Forest and Other Vegetation
All types of foliar forest emissions have been considered for this study including
deciduous, coniferous and mixed forests. ...
The equations which is using for forest can be used for grasslands and other type of vegetation. ...
doi:10.1016/j.atmosenv.2006.01.055
fatcat:p47fodqbm5gxbjtgbl5bggxncm
Development of Satellite Vegetation Indices to Assess Grassland Curing Across Australia and New Zealand
[chapter]
2009
Lecture Notes in Geoinformation and Cartography
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and similarities in the sensitivity of VIs to vegetation across grasslands, deserts, boreal forests, tropical forests, temperate coniferous and deciduous forests. ...
Conversely, the sum green index (SGI), photochemical reflectance index (PRI) and red green ratio index (RGRI) use more than one wavelength within a MODIS band. ...
Table 9 .2 Centre Wavelengths and bandwidths for MODIS bands 1 to 7, calculated by combining the response between the lower 1% response wavelength and the upper 1% response wavelength (Jupp, 2003 ...
doi:10.1007/978-3-540-93962-7_17
fatcat:hhdsfmzmdze6bh4vzd7dfphqje
Resistance and Resilience of A Stream Salamander To Supraseasonal Drought
2012
Herpetologica
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Storm tracks Originally, a term referring to the tracks of individual cyclonic weather systems, but now often generalised to refer to the regions where the main tracks of extratropical disturbances occur ...
, with general decreases in the sub-tropics. ...
Troposphere ozone acts as a Appendix II: Glossary
Reforestation Planting of forests on lands that have previously contained forests but that have been converted to some other use. ...
doi:10.1655/herpetologica-d-11-00084.1
fatcat:utef5ar3prh5tleynfkbkensqy
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