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48 478 (0,22s) •

Result

Field measurement of effective leaf area index using optical device in vegetation canopy

canopy and canopy gaps were discussed in the protocol. Furthermore, the instrument, and it is more affordable than the Plant Canopy Analyzer. The new instrument is characterizedLeaf area index (LAI) is an...

Forestry

  • 2021
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  • Jimp
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  • Link
Result

Upscaling seasonal phenological course of leaf dorsiventral reflectance in radiative transfer model

Forest top-of-canopy (TOC) reflectance observed by remote sensing instruments is driven by a wide range of parameters, including optical properties of leaves being spatial distribution of leaves and branches in the cano...

Remote sensing

  • 2020
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  • Jimp
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  • Link
Result

Impact of Structural, Photochemical and Instrumental Effects on Leaf and Canopy Reflectance Variability in the 500-600 nm Range

Current rapid technological improvement in optical radiometric instrumentation instrumental and experimental set-up aspects, as well as canopy structural effects. In this study, the leaf and canopy reflect...

Climatic research

  • 2022
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  • Jimp
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  • Link
Result

Prototype of the instrument TransmiPAR for continual measurement of photosynthetic active radiance transmission into canopy

The transmitted PAR into canopy can be used to assess leaf area index we can optimize the growth regulator dose. The developed instrument consists from three PAR sensors connected to datalogger. One is placed above canopy t...

GC - Pěstování rostlin, osevní postupy

  • 2006
    • •
  • X
Result

A New Model for Scattering From Tree Canopies Based on Physical Optics and Multiple Scattering Theory

This paper presents a new model for scattering from tree canopies based on a modified physical optics approach. In this way, propagation through a canopy either by the multiple scattering theory (MST) or approximated based ...

Electrical and electronic engineering

  • 2017
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  • Jimp
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  • Link
Result

A new hyperspectral index for chlorophyll estimation of a forest canopy: Area under curve normalised to maximal band depth between 650-725 nm.

A new optical index for estimation of chlorophyll content in forest canopy of Norway spruce.

GK - Lesnictví

  • 2006
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  • Jx
Result

Comparison of non-direct methods for estimation of nitrogen status and canopy structure in spring barley

derived from reflectance measurements in range 350 - 2500 nm (using the instrument FieldSpec 3 equipped with fiber optics) with in-vivo measured flavonols and chlorophyll content and derived Nitrogen Balance Index (NBI) (using the ...

GD - Hnojení, závlahy, zpracování půdy

  • 2012
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  • D
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  • Link
Result

Ten electrode tool hepatic radiofrequency ablation with fice centimeter radius bend for viewport canopy cut

Functional sample Ten electrode tool hepatic radiofrequency ablation with fice centimeter radius bend for viewport canopy cut is a technical solution electro-surgical instrument - electrodes for invasive surgical procedures. The too...

JA - Elektronika a optoelektronika, elektrotechnika

  • 2012
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  • Gfunk
Result

Variability and Uncertainty Challenges in Scaling Imaging Spectroscopy Retrievals and Validations from Leaves Up to Vegetation Canopies

and generalizing optical signals that are reflected, transmitted and emitted in the solar wavelength domain from single leaves and observed at the level of canopies by proximal-to-canopy upscaling variability and uncertain...

Remote sensing

  • 2019
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  • Jimp
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  • Link
Result

The Map of the Maximum Admissible Value of the Conservation Effect Factor of the Canopy Cover (C) on Blocks of Arable Land in the Czech Republic - Instrument of protection of agricultural land

The Map of the Maximum Admissible Value of the Conservation Effect Factor of the Canopy Cover (C) on Blocks of Arable Land in the Czech Republic - Instrument of protection of agricultural land against water erosion is based on the U...

DF - Pedologie

  • 2010
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  • Nmap
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