Results 231 to 240 of about 20,590 (257)
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Ecohydrology, 2018
AbstractAccurate quantification of terrestrial evapotranspiration and ecosystem productivity is of significant merit to better understand and predict the response of ecosystem energy, water, and carbon budgets under climate change. Existing diagnostic models have different focus on either water or carbon flux estimates with various model complexity and
Rong Gan +7 more
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AbstractAccurate quantification of terrestrial evapotranspiration and ecosystem productivity is of significant merit to better understand and predict the response of ecosystem energy, water, and carbon budgets under climate change. Existing diagnostic models have different focus on either water or carbon flux estimates with various model complexity and
Rong Gan +7 more
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Retrieving crop leaf area index by assimilation of MODIS data into a crop growth model
Science China Earth Sciences, 2010Leaf area index (LAI) is an important parameter in monitoring crop growth. One of the methods for retrieving LAI from remotely sensed observations is through inversion of canopy reflectance models. Many model inversion methods fail to account for variable LAI values at different crop growth stages.
DongWei Wang, JinDi Wang, ShunLin Liang
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2012 IEEE International Geoscience and Remote Sensing Symposium, 2012
Leaf area index (LAI) is one of the key vegetation indices for many biological and physical processes in plant canopies. In this study, an assimilation technique was used to simulate the LAI's varying in time series in an alpine wetland located in western China.
Xingwen Quan, Binbin He, Minfeng Xing
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Leaf area index (LAI) is one of the key vegetation indices for many biological and physical processes in plant canopies. In this study, an assimilation technique was used to simulate the LAI's varying in time series in an alpine wetland located in western China.
Xingwen Quan, Binbin He, Minfeng Xing
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Variational assimilation to retrieve leaf area index from MODIS time series data
SPIE Proceedings, 2009Currently, how to effectively utilize assimilation technique to retrieve biophysical parameters from time series remote sensing dada has attracted special concern. The assimilation technique is based on a reasonable consideration of the dynamical change rules of biophysical parameters and the time series observational quantities, thereby improving ...
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Transactions of the ASABE, 2010
Spatial extrapolation of cropping systems models for regional crop growth and water use assessment and farm-level precision management has been limited by the vast model input requirements and the model sensitivity to parameter uncertainty. Remote sensing has been proposed as a viable source of spatial information for guiding model simulations, but ...
null K. R. Thorp +2 more
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Spatial extrapolation of cropping systems models for regional crop growth and water use assessment and farm-level precision management has been limited by the vast model input requirements and the model sensitivity to parameter uncertainty. Remote sensing has been proposed as a viable source of spatial information for guiding model simulations, but ...
null K. R. Thorp +2 more
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Changes in Net Assimilation Rate and Leaf-area Ratio with Time in Dactyl is glomerata L.
Annals of Botany, 1971Two natural populations of Dactylis glomerata, one from Norway and the other from Portugal, were grown at four temperatures in a 16-h photoperiod. Seedlings were harvested at six equal intervals of 7 days at 5 and 10 °C, and 3-5 days at 20 and 30 °C.
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Impact of leaf area index assimilation on the ISBA-CTRIP global hydrological simulations
Leaf area index (LAI) regulates land–atmosphere exchanges and influences evapotranspiration (ET), seasonal water storage, and streamflow, but, in hydrological modelling, the value of constraining LAI with observations at the global scale remains poorly quantified at the basin scale.Gabriel Fernando Narvaez-Campo +4 more
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Plant and Soil, 1998
Reductions in leaf area and plant growth as a consequence of phosphorus (P) limitations have been attributed both to direct effects of P shortage on leaf expansion rate and to a reduced production of assimilates required for growth. Canopy assimilation and leaf area expansion are closely interrelated processes.
Rodriguez, Daniel +5 more
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Reductions in leaf area and plant growth as a consequence of phosphorus (P) limitations have been attributed both to direct effects of P shortage on leaf expansion rate and to a reduced production of assimilates required for growth. Canopy assimilation and leaf area expansion are closely interrelated processes.
Rodriguez, Daniel +5 more
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IGARSS 2023 - 2023 IEEE International Geoscience and Remote Sensing Symposium, 2023
Xiaolu Ling, Yong Xue
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Xiaolu Ling, Yong Xue
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