Results 11 to 20 of about 24,126 (256)

Evolution of Global Terrestrial Gross Primary Productivity Trend

Ecosystem Health and Sustainability
Increased global vegetation gross primary productivity (GPP) over the past decades has led to an enhanced terrestrial carbon sink, an important factor in mitigating global warming. However, the global spatiotemporal evolution of GPP trends is still under
Zihao Wang, Josep Peñuelas, Torbern Tagesson, W. K. Smith, Mousong Wu, Wei He, Stephen Sitch, Songhan Wang   +7 more
doaj   +2 more sources

Predicting Gross Primary Productivity in Terrestrial Ecosystems [PDF]

Ecological Applications, 1997
Our goal was to construct a simple, highly aggregated model, driven by easily available data sets, that accurately predicted terrestrial gross primary productivity (GPP; carboxylation plus oxygenation) in diverse environments and ecosystems. Our starting point was a fine-scale, multilayer model of half-hourly canopy processes that has been parametrized
Williams, M., Rastetter, E.B., Fernandes, D.N., Goulden, M.L., Shaver, G.R., Johnson, L.C.   +5 more
openaire   +2 more sources

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

Underestimates of Grassland Gross Primary Production in MODIS Standard Products [PDF]

Remote Sensing, 2018
As the biggest carbon flux of terrestrial ecosystems from photosynthesis, gross primary productivity (GPP) is an important indicator in understanding the carbon cycle and biogeochemical process of terrestrial ecosystems. Despite advances in remote sensing-based GPP modeling, spatial and temporal variations of GPP are still uncertain especially under ...
Xiaoyan Zhu, Yanyan Pei, Zhaopei Zheng, Jinwei Dong, Yao Zhang 0004, Junbang Wang, Lajiao Chen, Russell B. Doughty, Geli Zhang, Xiangming Xiao   +9 more
openaire   +4 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

Diagnostic assessment of European gross primary production [PDF]

Global Change Biology, 2008
AbstractWe present an approach to estimate gross primary production (GPP) using a remotely sensed biophysical vegetation product (fraction of absorbed photosynthetically active radiation, FAPAR) from the European Commission Joint Research Centre (JRC) in conjunction with GPP estimates from eddy covariance measurement towers in Europe.
Jung, Martin, Verstraete, Michel, Gobron, Nadine, Reichstein, Markus, Papale, Dario, Bondeau, Alberte, Robustelli, Monica, Pinty, Bernard   +7 more
openaire   +6 more sources

Climate Warming Dominates Vegetation Productivity in the Hanjiang River Basin, China

Land, 2023
The Hanjiang River Basin (HJRB) encompasses the Danjiangkou Reservoir, a critical water source for the South-to-North Water Transfer project, the world’s largest such endeavor.
Yuhui Bao, Liang Zheng, Kai Zhu, Hai Liu
doaj   +1 more source

Biophysical constraints on gross primary production by the terrestrial biosphere [PDF]

Biogeosciences, 2014
Abstract. Persistent divergences among the predictions of complex carbon cycle models include differences in the sign as well as the magnitude of the response of global terrestrial primary production to climate change. This and other problems with current models indicate an urgent need to re-assess the principles underlying the environmental controls ...
H. Wang, I. C. Prentice, T. W. Davis
openaire   +5 more sources

Divergent impacts of droughts on vegetation phenology and productivity in the Yungui Plateau, southwest China

Ecological Indicators, 2021
Climate change has led to an increase in the severity and frequency of extreme weather events, especially droughts. Quantifying the impacts of droughts on vegetation activities is essential to study the effects of climate change on the ecosystem.
Wenyan Ge, Jianqiao Han, Daojun Zhang, Fei Wang   +3 more
doaj   +1 more source

Extreme events driving year-to-year differences in gross primary productivity across the US [PDF]

Biogeosciences, 2021
Solar-induced chlorophyll fluorescence (SIF) has previously been shown to strongly correlate with gross primary productivity (GPP); however this relationship has not yet been quantified for the recently launched TROPOspheric Monitoring Instrument ...
A. J. Turner, P. Köhler, T. S. Magney, C. Frankenberg, C. Frankenberg, I. Fung, R. C. Cohen, R. C. Cohen   +7 more
doaj   +1 more source