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The Leaf Area Index (LAI) was an important structural parameter for quantifying the energy and mass exchange characteristics in ecosystems. There was considerable interest in assessing LAI to evaluate crop growth and production. In this study, hyperspectral vegetation indices (VIs) from in-situ remote sensing measurements were utilized to monitor erect-type corn (Zea mays L.) canopy's LAI. Firstly,...
In regional scale, satellite data was gained frequency nearly a day or more shorter, and these satellite data had already been wildly used for drought monitoring. Meanwhile, a variety of information systems of drought monitoring based on client/server architecture were developed and employed. However, these systems were too professional for non-professional workers to use. With the development of...
Unique polarimetric information included in SAR data hasn't received deserved attention, especially in the retrieval of crops biophysical parameters. This paper finds that two polarimetric parameters, that is polarimetric scattering entropy (H) and mean scattering angle (α), have great potential in crops biophysical parameters retrieval. Polarimetric features extracted by eigenvector-based and model-based...
Data assimilation is an advanced and innovative set of techniques for variable estimation, especially in agriculture research in recent years, which integrates not only remote sensing data products, other measurements, but also land dynamic models. It can provide more abundant and precise data set, and extend data's spatiotemporal scale. In this paper, firstly composition and assimilation methods...
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