Results 1 to 10 of about 20,491 (158)
Journal of Advances in Modeling Earth Systems, 2022 Representation of irrigation in Earth System Models has advanced over the past decade, yet large uncertainties persist in the effective simulation of irrigation practices, particularly over locations where the on‐ground practices and climate impacts are ...
Wanshu Nie +6 more
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Papaya (Carica papaya L.) Leaf Area Estimation and Single-leaf Net Photosynthetic CO2 Assimilation Rate Following Leaf Defoliation and Fruit Thinning [PDF]
HortScience, 2020 Papaya (Carica papaya L.) leaves are large, up to 70 cm wide, and frequently deeply lobed, with seven to 13 major veins. The scan width of current handheld digital leaf area instruments is generally less than 15 cm.
Lili Zhou +2 more
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Effect of perforated foil and polypropylene fibre covers on assimilation leaf area of early potato cultivars [PDF]
Plant, Soil and Environment, 2007 This paper presents the results of a three-year research on the effect of perforated polyethylene foil and polypropylene fibre covering at various lengths of plant cover period (2 and 3 weeks after plant emergence) on the assimilation leaf area of early ...
W. Wadas, E. Kosterna
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IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2013 Data assimilation as an approach for crop Leaf Area Index (LAI) estimation has been rapidly developed in the field of agricultural remote sensing. Many studies have attempted to integrate sequential remotely sensed observations in the dynamical operation of physical models, aiming to improve model performance of LAI estimation by using various data ...
Yingying Dong, Cunjun Li, Guijun Yang
exaly +2 more sources
Improving Winter Wheat Yield Estimation from the CERES-Wheat Model to Assimilate Leaf Area Index with Different Assimilation Methods and Spatio-Temporal Scales [PDF]
Remote Sensing, 2017 To improve the accuracy of winter wheat yield estimation, the Crop Environment Resource Synthesis for Wheat (CERES-Wheat) model with an assimilation strategy was performed by assimilating measured or remotely-sensed leaf area index (LAI) values. The performances of the crop model for two different assimilation methods were compared by employing ...
Gaohuan Liu, Chong Huang, Huang Chong
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Mathematical and Computer Modelling, 2013 Abstract Leaf area index (LAI) is a major indicator for crop growth monitoring and yield estimation. Data assimilation as an effective tool for crop LAI estimation fully considers the properties of actual observations and physical model simulations. In this work, we present a new data assimilation scheme, introducing a very fast simulated annealing ...
Yingying Dong +2 more
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International Journal of Digital Earth, 2023 Periodic observations of vegetation index, such as the normalized difference vegetation index (NDVI), can be used for data assimilation in heterogenous ecosystems. Indeed, the new Sentinel 2 Multispectral instrument and Landsat 8 Operational Land Imager sensor data are available at such high temporal and spatial resolutions that can be used to detect ...
Nicola Montaldo, Roberto Corona
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Journal of Geophysical Research, 2010 To quantify carbon and water fluxes between the vegetation and the atmosphere in a consistent manner, land surface models now include interactive vegetation components. These models treat the vegetation biomass as a prognostic model state, allowing the model to dynamically adapt the vegetation states to environmental conditions. However, it is expected
Christoph Rüdiger +2 more
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Forecasting Sunflower Grain Yield by Assimilating Leaf Area Index into a Crop Model [PDF]
Remote Sensing, 2020 Forecasting sunflower grain yield a few weeks before crop harvesting is of strategic interest for cooperatives that collect and store grains. With such information, they can optimize their logistics and thus reduce the financial and environmental costs of grain storage. To provide these predictions, data assimilation approaches involving the crop model
Trépos, Ronan +5 more
openaire +4 more sources
Мелиорация и гидротехника, 2023 Purpose: to determine the influence of the cultivar, seeding rate and application of mineral fertilizers when cultivating spring barley on the assimilation surface area of one plant and the leaf surface index of crops according to the crop growth phases ...
Galina M. Deriglazova
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