Results 261 to 270 of about 142,240 (292)
Some of the next articles are maybe not open access.
Gross Primary Production of Terrestrial Vegetation
2013Gross primary production (GPP) of vegetation is the first and important flux of the terrestrial carbon cycle, and there is no direct measurement technique for GPP at ecosystem and landscape scales. A number of satellite-based Light Use Efficiency (LUE) models or Production Efficiency Models (PEM) have been developed to estimate GPP in the past few ...
Xiangming Xiao, Cui Jin, Jinwei Dong
openaire +1 more source
Remote estimation of crop gross primary production with Landsat data
Remote Sensing of Environment, 2012 An accurate and synoptic quantification of gross primary production (GPP) in crops is essential for studies of carbon budgets at regional and global scales. In this study, we tested a model, relating crop GPP to a product of total canopy chlorophyll (Chl)
Anatoly A Gitelson +2 more
exaly +2 more sources
Assimilation of satellite observations for the estimation of Savanna gross primary production
2015 IEEE International Geoscience and Remote Sensing Symposium (IGARSS), 2015Monitoring vegetation gross primary production (GPP) is required for both carbon balance studies and early warning systems aiming to detect unfavorable crop and pasture conditions. This manuscript describes the assimilation of MODIS observations by a simple process model, fed by meteorological data (temperature, incident radiation and rainfall) and ...
Michele Meroni +3 more
openaire +2 more sources
Estimation of Gross Primary Productivity of an Ombrotrophic Bog in Southern Sweden
IGARSS 2008 - 2008 IEEE International Geoscience and Remote Sensing Symposium, 2008Eddy flux tower measurements, ground-based reflectance measurements, regionally modeled data, and data from the Moderate Resolution Imaging Spectroradiometer (MODIS) were used in this study of an ombrotrophic bog in southern Sweden. Linear regression analysis was used to investigate how the fraction of absorbed photosynthetically active radiation ...
Per Schubert, Magnus Lund, Lars Eklundh
openaire +1 more source
Geographical dimensions of terrestrial net and gross primary productivity
Radiation and Environmental Biophysics, 1978The paper presents a comparative summary of previous attempts by the author to assess and map global primary productivity using environmental parameters as predictors. The individual components of the productivity process, net production, gross production, dark respiration as well as their regional rates are computed for 10 degree latitudinal belts.
openaire +2 more sources
Estimation of Gross Primary Productivity of four types of forest in China
2016 IEEE International Geoscience and Remote Sensing Symposium (IGARSS), 2016The quantification of forest Gross Primary Productivity (GPP) has been the focus of many scientific studies (e.g. carbon cycle, climate change, etc.). Current remote sensing-based models (i.e., the MODIS MOD_17 model), rely on the accurate meteorological data, specific vegetation parameter, the applicability and explicability of remote sensing data. In
Wenwu Fan +3 more
openaire +1 more source
Emergent constraints on historical and future global gross primary productivity
Global Change BiologyAbstractTerrestrial gross primary productivity (GPP) is the largest carbon flux in the global carbon cycle and plays a crucial role in terrestrial carbon sequestration. However, historical and future global GPP estimates still vary markedly. In this study, we reduced uncertainties in global GPP estimates by employing an innovative emergent constraint ...
Xin Chen +6 more
openaire +3 more sources
Tropical ocean teleconnections with gross primary productivity of monsoon-Asia
Science of The Total EnvironmentThe intricate oceanic climate interactions with terrestrial primary production of Asian ecosystems exert crucial social-economical-environmental repercussions. Yet, a holistic understanding of tropical sea surface temperature (SST) anomalies associated with the gross primary productivity (GPP) variations of monsoon-Asia remains constrained.
Roma, Varghese +2 more
openaire +2 more sources
Regionalized Determinants of Dryland Forest Gross Primary Productivity
Journal of Geophysical Research: BiogeosciencesEcosystems may exist in alternative stable states and thereby extremely differ in ecosystem structure and functions, including gross primary productivity (GPP), which is crucial for assessing an ecosystem’s ability to capture atmospheric carbon dioxide, especially under the context of climate change.
Xuan Li +4 more
openaire +1 more source
Modelling future gross primary productivity in Australia
MODSIM2023, 25th International Congress on Modelling and Simulation., 2023openaire +1 more source