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Ability of the Photochemical Reflectance Index to Track Light Use Efficiency for a Sub-Tropical Planted Coniferous Forest

Qian Zhang, Weimin Ju, Jing Chen, Huimin Wang, Fengting Yang, Weiliang Fan, Qing Huang, Ting Zheng, Yongkang Feng, Yanlian Zhou, Mingzhu He, Feng Qiu (+4 others)
2015 Remote Sensing  
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

Christopher S. Potter, Susan E. Alexander, Joseph C. Coughlan, Steven A. Klooster
2001 Atmospheric Environment  
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

Huang, Qiu, Fan, Liu, Zhang
2019 Remote Sensing  
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

Beñat Olascoaga
2018 Dissertationes Forestales  
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

Li Ma, Shaoqiang Wang, Jinghua Chen, Bin Chen, Leiming Zhang, Lixia Ma, Muhammad Amir, Leigang Sun, Guoyi Zhou, Ze Meng
2020 Remote Sensing  
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

F. Riccioli, E. Marone, F. Boncinelli, C. Tattoni, D. Rocchini, R. Fratini
2018 New forests  
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

J.C. Hetherington
1979 Forest Ecology and Management  
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

G.F. Peterken
1981 Biological Conservation  
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

Ville Kasurinen
2016 Dissertationes Forestales  
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

Ville Kasurinen
2016 Dissertationes Forestales  
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

Daniel Obrist, Jane L. Kirk, Lei Zhang, Elsie M. Sunderland, Martin Jiskra, Noelle E. Selin
2018 Ambio  
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

Fang Wang, Jean Damascene Harindintwali, Zhizhang Yuan, Min Wang, Faming Wang, Sheng Li, Zhigang Yin, Lei Huang, Yuhao Fu, Lei Li, Scott X. Chang, Linjuan Zhang (+46 others)
2021 The Innovation 2(4)  
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

T. Kindap, A. Unal, S.-H. Chen, Y. Hu, M.T. Odman, M. Karaca
2006 Atmospheric Environment  
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]

Danielle Martin, Ian Grant, Simon Jones, Stuart Anderson
2009 Lecture Notes in Geoinformation and Cartography  
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

Steven J. Price, Robert A. Browne, Michael E. Dorcas
2012 Herpetologica  
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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