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Canopy spectral invariants for remote sensing of canopy structure

2009 First Workshop on Hyperspectral Image and Signal Processing: Evolution in Remote Sensing, 2009
The concept of canopy spectral invariants expresses the observation that simple algebraic combinations of leaf and canopy spectral reflectances become wavelength independent and determine two canopy structure specific variables - the recollision and escape probabilities.
Yuri Knyazikhin   +4 more
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Concepts of In-Canopy and Near-Canopy Sprinkler Irrigation

World Environmental and Water Resource Congress 2006, 2006
The use of in-canopy and near-canopy sprinkler application from mechanical move systems is prevalent in the U. S. Great Plains. These systems can reduce evaporative by nearly 15%, but introduce a much greater potential for irrigation non-uniformity. Close attention to the design, installation and operational guidelines for these systems can prevent ...
Freddie R. Lamm   +2 more
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A model of canopy drying

Agricultural Water Management, 1984
A one-dimensional diffusion model of canopy drying applied to a Pinus radiata forest yielded evapotranspiration rates during canopy drying less than those observed. The discrepancy indicated either there was a substantially greater interchange between the above and within canopy airflow than calculated assuming local diffusion, or there was a reduction
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Impact of rice canopy structure on canopy reflectance spectra

SPIE Proceedings, 2006
Plant canopy reflectance is affected not only by the optical properties of canopy components, but also by canopy structure. In this paper, the radiative transfer model was used to simulate rice canopy bi-directional reflectance to determine its sensitivity to leaf area index (LAI) and inclination.
Yunmei Li, Jay Gao, Yong Zha
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Analysis of canopy index values for various canopy densities

Boundary-Layer Meteorology, 1978
Canopy wind profiles can often be represented by an exponential function such that wind-speeds in these vegetative canopies are a function of height and the attenuation coefficient of this wind profile relationship. To be more precise, canopy flow is a function of canopy density, element flexibility, and height.
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The Cosmopolitan Canopy

The ANNALS of the American Academy of Political and Social Science, 2004
The public spaces of the city are more racially, ethnically, and socially diverse than ever. Social distance and tension as expressed by wariness of strangers appear to be the order of the day. But the “cosmopolitan canopy” offers a respite and an opportunity for diverse peoples to come together to do their business and also to engage in “folk ...
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The influence of canopy on the amount of light under the canopy shade

Acta Horticulturae, 2022
S. Soontornyatara, S. Chochong
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