Results 21 to 30 of about 861,969 (281)

Vegetation modulates the impact of climate extremes on gross primary production [PDF]

Biogeosciences, 2021
Drought and heat events affect the uptake and sequestration of carbon in terrestrial ecosystems. Factors such as the duration, timing, and intensity of extreme events influence the magnitude of impacts on ecosystem processes such as gross primary ...
M. Flach, M. Flach, M. Flach, A. Brenning, F. Gans, M. Reichstein, M. Reichstein, S. Sippel, S. Sippel, M. D. Mahecha, M. D. Mahecha, M. D. Mahecha   +11 more
doaj   +1 more source

Gross Primary Production and False Spring: a spatio-temporal analysis [PDF]

, 2020
<p>Phenological information can be obtained from different sources of data. For instance, from remote sensing data or products and from models driven by weather variables. The former typically allows analyzing land surface phenology whereas the latter provide plant phenological information.
Emma Izquierdo-Verdiguier, Raúl Zurita-Milla, Álvaro Moreno-Martinez, Gustau Camps-Valls, Anja Klisch, Clement Atzberger, Steven W. Running   +6 more
openaire   +1 more source

Extreme events in gross primary production: a characterization across continents [PDF]

Biogeosciences, 2014
Climate extremes can affect the functioning of terrestrial ecosystems, for instance via a reduction of the photosynthetic capacity or alterations of respiratory processes. Yet the dominant regional and seasonal effects of hydrometeorological extremes are
J. Zscheischler, M. Reichstein, S. Harmeling, A. Rammig, E. Tomelleri, M. D. Mahecha   +5 more
doaj   +1 more source

WUE and CO₂ Estimations by Eddy Covariance and Remote Sensing in Different Tropical Biomes

Remote Sensing, 2022
The analysis of gross primary production (GPP) is crucial to better understand CO2 exchanges between terrestrial ecosystems and the atmosphere, while the quantification of water-use efficiency (WUE) allows for the estimation of the compensation between ...
Gabriel B. Costa, Cláudio M. Santos e Silva, Keila R. Mendes, José G. M. dos Santos, Theomar T. A. T. Neves, Alex S. Silva, Thiago R. Rodrigues, Jonh B. Silva, Higo J. Dalmagro, Pedro R. Mutti, Hildo G. G. C. Nunes, Lucas V. Peres, Raoni A. S. Santana, Losany B. Viana, Gabriele V. Almeida, Bergson G. Bezerra, Thiago V. Marques, Rosaria R. Ferreira, Cristiano P. Oliveira, Weber A. Gonçalves, Suany Campos, Maria U. G. Andrade   +21 more
doaj   +1 more source

Impact of temperature and water availability on microwave-derived gross primary production [PDF]

Biogeosciences, 2021
Vegetation optical depth (VOD) from microwave satellite observations has received much attention in global vegetation studies in recent years due to its relationship to vegetation water content and biomass.
I. E. Teubner, I. E. Teubner, M. Forkel, B. Wild, L. Mösinger, W. Dorigo   +5 more
doaj   +1 more source

Comparison of Machine Learning Methods to Up-Scale Gross Primary Production

Remote Sensing, 2021
Eddy covariance observation is an applicable way to obtain accurate and continuous carbon flux at flux tower sites, while remote sensing technology could estimate carbon exchange and carbon storage at regional and global scales effectively.
Tao Yu, Qiang Zhang, Rui Sun
doaj   +1 more source

Spatiotemporal patterns of terrestrial gross primary production: A review [PDF]

, 2015
This is the final version of the article. Available from American Geophysical Union via the DOI in this record.There is another record for this publication in ORE at http://hdl.handle.net/10871/30934Great advances have been made in the last decade in ...
Anav, A, Beer, C, Ciais, P, Friedlingstein, P, Harper, A, Jones, C, Murray-Tortarolo, G, Papale, D, Parazoo, NC, Peylin, P, Piao, S, Sitch, S, Viovy, N, Wiltshire, A, Zhao, M   +14 more
core   +3 more sources

Gross primary production of global forest ecosystems has been overestimated. [PDF]

Sci Rep, 2015
AbstractCoverage rate, a critical variable for gridded forest area, has been neglected by previous studies in estimating the annual gross primary production (GPP) of global forest ecosystems. In this study, we investigated to what extent the coverage rate could impact forest GPP estimates from 1982 to 2011. Here we show that the traditional calculation
Ma J, Yan X, Dong W, Chou J.
europepmc   +4 more sources

Improving Global Gross Primary Productivity Estimation by Fusing Multi-Source Data Products

SSRN Electronic Journal, 2021
A reliable estimate of the gross primary productivity (GPP) of terrestrial vegetation is essential for both making decisions to address global climate change and understanding the global carbon balance. The lack of consistency in global terrestrial GPP estimates across various products leads to great uncertainty.
Yahai Zhang, Aizhong Ye
openaire   +3 more sources

Net primary production of forests: a constant fraction of gross primary production? [PDF]

Tree Physiology, 1998
Considerable progress has been made in our ability to model and measure annual gross primary production (GPP) by terrestrial vegetation. But challenges remain in estimating maintenance respiration (R(m)) and net primary production (NPP). To search for possible common relationships, we assembled annual carbon budgets from six evergreen and one deciduous
R. H., Waring, J. J., Landsberg, M., Williams   +2 more
openaire   +2 more sources