Results 21 to 30 of about 98,513 (306)

The Design and Implementation of the Leaf Area Index Sensor [PDF]

open access: yesSensors, 2015
The quick and accurate acquisition of crop growth parameters on a large scale is important for agricultural management and food security. The combination of photographic and wireless sensor network (WSN) techniques can be used to collect agricultural information, such as leaf area index (LAI), over long distances and in real time.
Xiuhong Li   +5 more
openaire   +3 more sources

Inferring Amazon leaf demography from satellite observations of leaf area index [PDF]

open access: yesBiogeosciences, 2012
Seasonal and year-to-year variations in leaf cover imprint significant spatial and temporal variability on biogeochemical cycles, and affect land-surface properties related to climate.
S. Caldararu, P. I. Palmer, D. W. Purves
doaj   +1 more source

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

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

Optical instruments for measuring leaf area index in low vegetation : application in Arctic ecosystems [PDF]

open access: yes, 2005
Author Posting. © Ecological Society of America, 2005. This article is posted here by permission of Ecological Society of America for personal use, not for redistribution.
Williams, Mathew   +5 more
core   +1 more source

Optimal Exploitation of the Sentinel-2 Spectral Capabilities for Crop Leaf Area Index Mapping [PDF]

open access: yes, 2012
The continuously increasing demand of accurate quantitative high quality information on land surface properties will be faced by a new generation of environmental Earth observation (EO) missions.
Mauser, Wolfram   +13 more
core   +1 more source

Mapping Leaf Area Index With a Smartphone and Gaussian Processes [PDF]

open access: yesIEEE Geoscience and Remote Sensing Letters, 2015
Leaf area index (LAI) is a key biophysical parameter used to determine foliage cover and crop growth in environmental studies. Smartphones are nowadays ubiquitous sensor devices with high computational power, moderate cost, and high-quality sensors. A smartphone app, called PocketLAI, was recently presented and tested for acquiring ground LAI estimates.
Manuel Campos-Taberner   +6 more
openaire   +2 more sources

LEAF AREA INDEX RETRIEVED FROM THERMAL HYPERSPECTRAL DATA [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2016
Leaf area index (LAI) is an important essential biodiversity variable due to its role in many terrestrial ecosystem processes such as evapotranspiration, energy balance, and gas exchanges as well as plant growth potential. A novel approach presented here
E. Neinavaz   +3 more
doaj   +1 more source

Retrieval of Leaf Area Index (LAI) and Soil Water Content (WC) Using Hyperspectral Remote Sensing under Controlled Glass House Conditions for Spring Barley and Sugar Beet [PDF]

open access: yes, 2010
Leaf area index (LAI) and water content (WC) in the root zone are two major hydro-meteorological parameters that exhibit a dominant control on water, energy and carbon fluxes, and are therefore important for any regional eco-hydrological or ...
Borzuchowski, Jaromir   +3 more
core   +1 more source

Downscaling of MODIS leaf area index using landsat vegetation index [PDF]

open access: yesGeocarto International, 2020
Several organizations provide satellite Leaf Area Index (LAI) data regularly, at various scales, at high frequency, but at low spatial resolution.
Georgios Ovakoglou   +3 more
openaire   +2 more sources

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