Results 221 to 230 of about 19,309 (262)
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Hybrid phenology matching model for robust crop phenological retrieval
ISPRS Journal of Photogrammetry and Remote Sensing, 2021Abstract Crop phenology regulates seasonal agroecosystem carbon, water, and energy exchanges, and is a key component in empirical and process-based crop models for simulating biogeochemical cycles of farmlands, assessing gross and net primary production, and forecasting the crop yield.
Xiaoyang Zhang +2 more
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Predicting rice phenology across China by integrating crop phenology model and machine learning
Science of the Total EnvironmentThis study explores the integration of crop phenology models and machine learning approaches for predicting rice phenology across China, to gain a deeper understanding of rice phenology prediction. Multiple approaches were used to predict heading and maturity dates at 337 locations across the main rice growing regions of China from 1981 to 2020 ...
Xiaomao Lin, Chongya Jiang
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Template phenology for vegetation models
2009 IEEE International Geoscience and Remote Sensing Symposium, 2009To assist the representation of phenology in vegetation models we created several templates of phenology-driver relations by characterizing the annual phase differences between phenology and two phenology drivers. We did this using the results of a cross spectral analysis of MODIS EVI with radiation (CPTEC) and with precipitation (TRMM).
Andrew V. Bradley +8 more
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Temperature data for phenological models
International Journal of Biometeorology, 2001In an arid environment, the effect of evaporation on energy balance can affect air temperature recordings and greatly impact on degree-day calculations. This is an important consideration when choosing a site or climate data for phenological models.
Snyder R L +3 more
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Phenology and Seasonality Modeling
Forest Science, 1975The pulse of life with the seasons is a classic theme of biology, equally cap turing every man's curiosity about early and late milestones of every year's cycle and the critical physiologist's inquiry into life's subtle signals and responses. Natural historians of ancient and renaissance time as well as today have charted the commonsense facts behind ...
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Modeling apple bloom phenology
Acta Horticulturae, 2017Detailed information about apple phenology allows a grower to manage the orchard efficiently and to decide how many fruits per tree harvest. In general, eight stages have been identified for apple development starting with green tip until petal fall. Mathematical models can be developed to predict crop phenological stages.
B. Chaves +4 more
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International Journal of Biometeorology, 2011
Predicting regional and global carbon and water dynamics requires a realistic representation of vegetation phenology. Vegetation models including cropland models exist (e.g. LPJmL, Daycent, SIBcrop, ORCHIDEE-STICS, PIXGRO) but they have various limitations in predicting cropland phenological events and their responses to climate change.
Ma, S., Churkina, G., Trusilova, K.
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Predicting regional and global carbon and water dynamics requires a realistic representation of vegetation phenology. Vegetation models including cropland models exist (e.g. LPJmL, Daycent, SIBcrop, ORCHIDEE-STICS, PIXGRO) but they have various limitations in predicting cropland phenological events and their responses to climate change.
Ma, S., Churkina, G., Trusilova, K.
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Phenological Studies and Modeling in Grasslands
1974Energy in the form of solar radiation is the basic driving force of the vegetation system. A small fraction of this energy is utilized in photosynthesis. Much is utilized in changing the state of water in the system, that is, in evapotranspiration.
Norman French, Ronald H. Sauer
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Lentil Variation in Phenology and Yield Evaluated with a Model
Agronomy Journal, 2015Lentil (Lens culinaris Medik.) is a major crop highly valued in the food and nutritional security of millions of people, as well as a rotation crop. Lentil is grown in areas facing many environmental constraints from low moisture availability and high temperatures to winter cold at high elevations.
Ghanem, Michel Edmon +4 more
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Phenological models for blooming of apple in a mountainous region
International Journal of Biometeorology, 2006Six phenological series were available for 'Golden Delicious' apple blooming at six sites in Trentino, an alpine fruit-growing region. Several models were tested to predict flowering dates, all involving a "chilling and forcing" approach. In many cases, application of the models to different climatic conditions results in low accuracy of prediction of ...
Rea, Roberto, Eccel, Emanuele
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