Results 31 to 40 of about 75,226 (162)

Empirical Regression Models for Estimating Multiyear Leaf Area Index of Rice from Several Vegetation Indices at the Field Scale

open access: yesRemote Sensing, 2014
Leaf area index (LAI) is among the most important variables for monitoring crop growth and estimating grain yield. Previous reports have shown that LAI derived from remote sensing data can be effectively applied in crop growth simulation models for ...
Masayasu Maki, Koki Homma
doaj   +1 more source

Assessing Terrestrial Ecosystem Resilience using Satellite Leaf Area Index

open access: yesRemote Sensing, 2020
Quantitative approaches to measuring and assessing terrestrial ecosystem resilience, which expresses the ability of an ecosystem to recover from disturbances without shifting to an alternative state or losing function and services, is critical and ...
Jinhui Wu, Shunlin Liang
doaj   +1 more source

The effects of different densities of pigweed (Amaranthus retroflexus) on growth indices of soybean (Glycine max L.)

open access: yesپژوهشهای زراعی ایران, 2009
To evaluate the interference of Red Root pigweed on growth indices of soybean cultivars an experiment was carried out in Research, Breeding and Providing of Seedling and Seed of Karaj institute during growing season of 2002.
marjan samaeii   +2 more
doaj   +1 more source

Particle Group Metropolis Methods for Tracking the Leaf Area Index

open access: yesICASSP 2020 - 2020 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2020
Monte Carlo (MC) algorithms are widely used for Bayesian inference in statistics, signal processing, and machine learning. In this work, we introduce an Markov Chain Monte Carlo (MCMC) technique driven by a particle filter. The resulting scheme is a generalization of the so-called Particle Metropolis-Hastings (PMH) method, where a suitable Markov chain
Luca Martino   +2 more
openaire   +3 more sources

Retrieving Woody Components from Time-Series Gap-Fraction and Multispectral Satellite Observations over Deciduous Forests

open access: yesRemote Sensing
Leaf area index (LAI) is essential for understanding vegetation dynamics, ecosystem processes, and land–atmosphere interactions. Various measurement methods exist, but gap-fraction-based indirect methods are preferred due to their reduced labor and field
Woohyeok Kim   +5 more
doaj   +1 more source

Relationship between Flag Leaf Characteristics and Main Yield Components in Oat (Avena sativa L.)

open access: yesBulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca: Agriculture, 2019
The objective of this study was to investigate relationships between leaf area index, leaf chlorophyll concentration, yield components and grain yield in oat (Avena sativa L.).
Ionuṭ RACZ   +6 more
doaj   +1 more source

Estimating leaf area index and coverage of dominant vegetation on an extensive green roof in Syracuse, NY

open access: yesNature-Based Solutions, 2023
Roofs with full or partial coverage of vegetation, also known as green roofs, are perceived to restore ecosystem services in urban areas. Research investigations have been carried out to evaluate green roof performance on reducing stormwater runoff ...
Alexander J. Johnson   +3 more
doaj   +1 more source

The effect of growth indices in competitive ability of some canola (Brasica napus) cultivars against wild mustard (Sinapis arvensis).

open access: yesپژوهشهای زراعی ایران, 2009
In order to evaluate the interference of wild mustard on growth indices of Canola cultivars an experiment was carried out in Agricultural and Natural Resources Research Institute of Gorgan during 2005-2006 growing season.
ali reza safahani   +4 more
doaj   +1 more source

The effect of covering and mulching on the soil temperature, growth and yield of tomato

open access: yesFolia Horticulturae, 2014
By improving the thermal and moisture conditions in the immediate vicinity of plants, plastic covers influenced the growth and development and increased the yield of vegetables.
Kosterna Edyta
doaj   +1 more source

Relationship between leaf area index and phisiographical and edaphical condition in a Quercus macranthera stand (Case study: Andebil's forest, Khalkhal) [PDF]

open access: yesتحقیقات جنگل و صنوبر ایران, 2009
This study attempted to investigate leaf area index in Quercus macranthera coppice stand. A forest of 278 hectares located at the northeast of Khalkhal was selected as the study region.
Sasan Babaei Kafaki   +2 more
doaj  

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