Results 11 to 20 of about 376,534 (305)

Retrieving leaf area index from SPOT4 satellite data

open access: yesThe Egyptian Journal of Remote Sensing and Space Science, 2010
AbstractA 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. The objective of this study is to generate normalized difference vegetation index (NDVI)–leaf area index (LAI) statistical ...
M. Aboelghar   +5 more
openaire   +3 more sources

Usage of Lidar Data for Leaf Area Index Estimation

open access: yesGeoScience Engineering, 2014
Abstract Leaf area index (LAI) can be measured either directly, using destructive methods, or indirectly using optical methods that are based on the tight relationship between LAI and canopy light transmittance. Third, innovative approach for LAI measuring is usage of remote sensing data, especially airborne laser scanning (ALS) data shows itself ...
Sabol, Jan   +2 more
openaire   +4 more sources

Leaf area index in a forested mountain catchment

open access: yesHungarian Geographical Bulletin, 2018
Leaf area index (LAI) belongs among the catchment characteristics widely used in hydrological models but still associated with great uncertainties. In a mountain forest catchment, the leaf area affects retention and evapotranspiration loss, and it could be significantly modified by forestry practices.
Ladislav Palán   +2 more
openaire   +4 more sources

II. Ürün Soya Çeşitlerinin [Glycine max (L.) Merrill] Farklı Yetişme Dönemlerinde Ölçülen Fizyolojik Parametreleri

open access: yesISPEC Journal of Agricultural Sciences, 2021
Farklı olgunlaşma grubunda yer alan 13 soya çeşidinin yer aldığı çalışma,  tesadüf blokları deneme desenine göre, üç tekrarlamalı olarak 2019 yılında Şırnak ili İdil ilçesinde yürütülmüştür.
Ferhat ÖZTÜRK   +3 more
doaj   +1 more source

Estimation of Leaf Area Index across Biomes and Growth Stages Combining Multiple Vegetation Indices. [PDF]

open access: yesSensors (Basel)
The leaf area index (LAI) is a key indicator of vegetation canopy structure and growth status, crucial for global ecological environment research. The Moderate Resolution Spectral Imager-II (MERSI-II) aboard Fengyun-3D (FY-3D) covers the globe twice ...
Lv F, Sun K, Li W, Miao S, Hu X.
europepmc   +2 more sources

تأثیر سطوح شوری آب آبیاری با NaCl بر فیلوکرون و سرعت ظهور برگ ارقام جو [PDF]

open access: yesتنش های محیطی در علوم زراعی, 2016
شوری منابع آب‌وخاک از مهم‌ترین مشکلات کشاورزی در مناطق خشک و نیمه‌خشک ایران است. برای بررسی تأثیر شوری آب آبیاری بر فیلوکرون و سرعت ظهور برگ ارقام جو، آزمایشی به‌صورت فاکتوریل در قالب طرح پایه بلوک‌های کامل تصادفی با سه تکرار در گلخانه دانشکده کشاورزی ...
رئوف سیدشریفی   +1 more
doaj   +1 more source

Is stunting in children under five associated with the state of vegetation in the Democratic Republic of the Congo? Secondary analysis of Demographic Health Survey data and the satellite-derived leaf area index. [PDF]

open access: yesHeliyon, 2023
Background: The prevalence of stunting in the Democratic Republic of the Congo (DRC) is one of the highest globally. However, only a few studies have attempted to measure the association between stunting and vegetation, which is an important food source.
Bangelesa F   +7 more
europepmc   +2 more sources

Comparison of LiDAR-based Models for True Leaf Area Index and Effective Leaf Area Index Estimation in Young Beech Forests

open access: yesActa Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 2020
The leaf area index (LAI) is one of the most common leaf area and canopy structure quantifiers. Direct LAI measurement and determination of canopy characteristics in larger areas is unrealistic due to the large number of measurements required to create ...
Zdeněk Patočka   +5 more
doaj   +1 more source

The evaluation of leaf area by the grapewine

open access: yesActa Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 2009
The contribution deals with leaf area assesment of 9 grapevine varieties. The measurements were carried out by means of Leaf Area Metr CI-202 (scanner type).
Patrik Burg, Pavel Zemánek
doaj   +1 more source

Leaf area index of potato crop under three nitrogen fertilization treatments

open access: yesAgronomía Colombiana, 2017
Nitrogen fertilization has considerable effects on growth and yield of the potato crop. Additionally, leaf expansion is one of the most important growth parameters that can be used to optimize the management of agroecological resources.
Pedro Manuel Villa
doaj   +1 more source

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