Results 21 to 30 of about 75,226 (162)

Sentinel Image to Estimate Industrial Tomato Leaf Area Index

open access: yesBrazilian Archives of Biology and Technology, 2023
The Leaf Area Index (LAI) is one of the main physiological parameters of the plant related to transpiration, productivity and rainfall interception. Among the methods to determine the LAI, the use of remote sensing that estimates the LAI through image ...
Mylena Marques Dorneles   +3 more
doaj   +1 more source

Metsa lehepinnaindeksi kaardistamine lennukilidari, satelliidipiltide ja maapealsete mõõtmiste abil Järvselja VALERI testalal / Leaf area index mapping with airborne lidar, satellite images and ground measurements in Järvselja VALERI test site

open access: yesMetsanduslikud Uurimused, 2011
The aim of this study was to compile the leaf area index (LAI) map of a 3×3 km VALERI test site in Järvselja, Estonia. Canopy transmittance measurements of LAI by LAI-2000 Plant Canopy Analyzers and digital cameras supplied with fisheye converters were ...
Kodar Ave   +5 more
doaj   +1 more source

Leaf area index estimation using top-of-canopy airborne RGB images

open access: yesInternational Journal of Applied Earth Observations and Geoinformation, 2021
Leaf Area Index (LAI) is one of the most important biophysical properties of a crop, used in detecting long-term water stress, estimating biomass, and identifying crop growth stage.
Rahul Raj   +5 more
doaj   +1 more source

Projections of leaf area index in earth system models [PDF]

open access: yesEarth System Dynamics, 2016
The area of leaves in the plant canopy, measured as leaf area index (LAI), modulates key land–atmosphere interactions, including the exchange of energy, moisture, carbon dioxide (CO2), and other trace gases and aerosols, and is therefore an essential ...
N. Mahowald   +6 more
doaj   +1 more source

Retrieving leaf area index from multi-angular airborne data

open access: yesAnnals of Geophysics, 2006
This work is aimed to demonstrate the feasibility of a methodology for retrieving bio-geophysical variables whilst at the same time fully accounting for additional information on directional anisotropy.
J. Meliá   +2 more
doaj   +1 more source

Regional‐Scale Relationships of Leaf Area Index to Specific Leaf Area and Leaf Nitrogen Content

open access: yesEcological Applications, 1994
Specific leaf area (SLA) is an important link between vegetation water and carbon cycles because it describes the allocation of leaf biomass per unit of leaf area. Several studies in many vegetation types have shown that canopy SLA is closely related to canopy leaf nitrogen (N) content and photosynthetic capacity.
Lars L. Pierce   +2 more
openaire   +2 more sources

Genetic variability studies in amaranthus (Amaranthus spp.)

open access: yesJournal of Horticultural Sciences, 2021
An investigation was carried out to estimate the nature and extent of genetic variability​ ​among twenty Amaranthus genotypes (Amaranthus spp.) under a randomized block design during the year 2019-20.
Annapoorna Agadi   +4 more
doaj   +1 more source

Assessment of morphological attributes of Guava tree for design of a novel tunnel spraying system

open access: yesEnvironment Conservation Journal
The morphological attributes play a significant role in determining the level of applied insecticide by the existing spraying system. Therefore, this attempt was made to assess the various morphological attributes of guava tree such as leaf size, leaf ...
Jagjeet Singh   +5 more
doaj   +1 more source

Retrieving leaf area index from SPOT4 satellite data

open access: yesEgyptian Journal of Remote Sensing and Space Sciences, 2010
A research project was conducted as collaboration between the National Authority for Remote Sensing and Space Sciences (NARSS) in Egypt and the Institute of Remote Sensing Applications (IRSA), Chinese Academy of Sciences.
M. Aboelghar   +5 more
doaj   +1 more source

Measurement and estimation of specific leaf area, leaf dry mass and leaf area index of Rhizophora mucronata Lam. in Sirik mangrove forests [PDF]

open access: yesمجله جنگل ایران, 2020
The objective of this study was to measure and determine the allometric equation of leaf dry mass, specific leaf area and leaf area index of Rhizophora mucronata species located in Sirik city, Hormozgan province, Iran.
M. Moslehi   +3 more
doaj  

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