Results 101 to 110 of about 111,531 (241)

Measurement of surface physical properties and radiation balance for KUREX-91 study [PDF]

Biophysical properties and radiation balance components were measured at the Streletskaya Steppe Reserve of the Russian Republic in July 1991. Steppe vegetation parameters characterized include leaf area index (LAI), leaf angle distribution, mean tilt ...
Blad, Blaine L., Hays, Cynthia J., Mesarch, Mark A., Walter-Shea, Elizabeth A.   +3 more
core   +1 more source

Field spectrometer to measure percent ground coverage and leaf area index of agriculture crops [PDF]

, 1981
Measurement of percent ground cover (PGC) and leaf area index (LAI) are required for crop modelling, yield estimation and for ground truth data in remote sensing studies.
Brach, E. J., Desjardins, R. L., Dubé, P. A., Lord, Daniel   +3 more
core  

Parasitic contamination of leafy vegetables: a function of the leaf area index (lai)

Global Journal of Pure and Applied Sciences, 2003
A survey was undertaken to determine the degree of contamination of some stable vegetables and their surrounding soils by parasites in Uyo, Nigeria. Out of the 780 leaves from six vegetables and 50 soil samples screened, 498 (63.9%) of vegetables and 36 (72%) of the soil samples were positive for parasite ova, larvae or cyst respectively.
Opara, Kenneth Nnamdi, Udoidung, Nsima I.   +1 more
openaire   +3 more sources

Estimation of leaf area index and assessment of its allometric equations in oak forests: Northern Zagros, Iran

Journal of Forest Science, 2012
The focus of the present study is the estimation of leaf area index (LAI) and the assessment of allometric equations for predicting the leaf area of Lebanon oaks (Quercus libani Oliv.) in Iran's northern Zagros forests.
S. Khosravi, M. Namiranian, H. Ghazanfari, A. Shirvani   +3 more
doaj   +1 more source

DSCOVR EPIC vegetation earth system data record: product analysis and scientific exploration [PDF]

, 2018
The NASA's Earth Polychromatic Imaging Camera (EPIC) onboard NOAA's Deep Space Climate Observatory (DSCOVR) mission was launched on February 11, 2015 to the Sun-Earth Lagrangian L1 point where it began to collect radiance data of the entire sunlit Earth ...
Knjazihhin, Juri, Mõttus, Matti, Pisel, Jan, Rautiainen, Miina, She, Xiaojun   +4 more
core  

A three-part geometric model to predict the radar backscatter from wheat, corn, and sorghum [PDF]

A model to predict the radar backscattering coefficient from crops must include the geometry of the canopy. Radar and ground-truth data taken on wheat in 1979 indicate that the model must include contributions from the leaves, from the wheat head, and ...
Eger, G. W., III, Kanemasu, E. T., Ulaby, F. T.   +2 more
core   +1 more source

Multitemporal monitoring of plant area index in the Valencia Rice District with PocketLAI [PDF]

, 2016
Leaf area index (LAI) is a key biophysical parameter used to determine foliage cover and crop growth in environmental studies in order to assess crop yield.
Boschetti, Mirco, Busetto, Lorenzo, Camacho de Coca, Fernando, Campos Taberner, Manuel, Confalonieri, R., García-Haro, Francisco Javier, Gilabert Navarro, María Amparo, Martínez Díaz, Beatriz, Moreno, Álvaro, Sánchez-Ruiz, Sergio   +9 more
core   +3 more sources

Seasonal influence of leaf area index (LAI) on the energy performance of a green facade

Building and Environment, 2022
G. Pérez, Julià Coma, Marta Chàfer, L. Cabeza   +3 more
semanticscholar   +1 more source

Calibration of a Species-Specific Spectral Vegetation Index for Leaf Area Index (LAI) Monitoring: Example with MODIS Reflectance Time-Series on Eucalyptus Plantations

Remote Sensing, 2012
The leaf area index (LAI) is a key characteristic of forest ecosystems. Estimations of LAI from satellite images generally rely on spectral vegetation indices (SVIs) or radiative transfer model (RTM) inversions. We have developed a new and precise method
G. Maire, C. Marsden, Y. Nouvellon, J. Stape, F. Ponzoni   +4 more
semanticscholar   +1 more source

Exploring the Effects of Topography on Leaf Area Index Retrieved from Remote Sensing Data at Various Spatial Scales over Rugged Terrains

Remote Sensing
Topography significantly affects remotely sensed reflectance data and subsequently impacts the retrieval of the leaf area index (LAI) from surface reflectance data over rugged terrains.
Yajie Zheng, Zhiqiang Xiao, Hanyu Shi, Jinling Song   +3 more
doaj   +1 more source