Results 11 to 20 of about 346,059 (309)

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

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   +5 more sources

Maximum Gross Primary Productivity Dominates the Trend in Gross Primary Productivity in China’s Deciduous Forest Ecosystems

Forests, 2023
The terrestrial gross primary productivity (GPP) has increased over the past two decades. However, the climatic attribution and the physiological and phenological processes that control the trends in the GPP are still unclear. Here, we used remote-sensing-based vegetation GPP and phenology datasets, analyzed the spatial and temporal variation in the ...
Yan Lv, Xiaoyong Li, Wenfeng Chi
openaire   +1 more source

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

The 2010 spring drought reduced primary productivity in southwestern China [PDF]

, 2012
Many parts of the world experience frequent and severe droughts. Summer drought can significantly reduce primary productivity and carbon sequestration capacity. The impacts of spring droughts, however, have received much less attention.
Guo, Huadong, Lei, Liping, Li, Jing, Wang, Kun, Xiao, Jingfeng, Zhang, Li   +5 more
core   +3 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

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

Crop Yield Estimation in the Canadian Prairies Using Terra/MODIS-Derived Crop Metrics

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2020
We evaluated the utility of Terra/MODIS-derived crop metrics for yield estimation across the Canadian Prairies. This study was undertaken at the Census Agriculture Region (CAR) and the Rural Municipality (RM) of the province of Saskatchewan, in three ...
Jiangui Liu, Ted Huffman, Budong Qian, Jiali Shang, Qingmou Li, Taifeng Dong, Andrew Davidson, Qi Jing   +7 more
doaj   +1 more source

A methodology for parameter estimation in seaweed productivity modelling [PDF]

, 1993
This paper presents a combined approach for parameter estimation in models of primary production. The focus is on gross primary production and nutrient assimilation by seaweeds.
A Rable, BA Macler, BH Brinkhuis, FI Dromgoole, FI Dromgoole, HO Pires, JG Ferreira, KE Arnold, KH Mann, KM Khailov, M Torres, MM Littler, MS Murthy, R Margalef, R Santos, RA Melo, RA Vollenweider, RG Wiegert, RJ Búesa, RM Fujita, S Fredriksen, TR Parsons   +21 more
core   +1 more source