Search Results - LI Yun-mei
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Study on red edge characteristics of rice spectral caused by nitrogen level
Published 2001-05-01Get full textThe canopy spectra of rice under different nitrogen levels were studied. Some red edge parameters in the first derivative reflectance curve (wavelength, amplitude and area of the red edge peak) were studied to evaluate rice leaf chlorophyll, LAI etc. Red edge positions move to longer wave bands till...
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Dynamics of rice canopy bidirectional reflectance
Published 2001-01-01Get full textThis paper discusses the dynamics of vegetation canopies reflectance with view zenith angles and vegetation canopies structure. The results show that: ① vegetation canopy reflectance increases with increasing off-nadir view angle for all azimuth directions. For a sparse canopy, the backscattering ch...
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Simulation of rice leaf reflectance
Published 2002-03-01Get full textThe rice leaf spectra are modeled by PROSPECT model in different period of rice growing. The relativity coefficients between measured and calculated reflectance are up to 99.5%. The RMSE are less than 0.0212.
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Relationships between rice agricultural parameter and hyperspectra data
Published 2002-05-01Get full textThe paper studied the variation of leaf area index (LAI), leaf chlorophyll content (CHL. C), fresh leaf chlorophyll density (CHL. D) and hyperspectral data in growing period on rice field plots of different nitrogen levels. The correlations between the hyperspectral data and above parameters of rice...
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