Results 1 to 10 of about 7,084 (203)

Global Trends in Seasonality of Normalized Difference Vegetation Index (NDVI), 1982–2011 [PDF]

Remote Sensing, 2013
A 30-year series of global monthly Normalized Difference Vegetation Index (NDVI) imagery derived from the Global Inventory Modeling and Mapping Studies (GIMMS) NDVI3g archive was analyzed for the presence of trends in changing seasonality.
Assaf Anyamba, Florencia Sangermano, Elia A. Machado, J. Ronald Eastman, John Rogan   +4 more
doaj   +4 more sources

Assessment of drought severity in Khar Yamaat Nature Reserve Area using satellite derived drought indexes

Mongolian Journal of Biological Sciences, 2022
Mongolia has experienced several extreme climate events during the past decades, including severe extreme droughts. The issue of drought is of paramount significance in our country of nomadic culture and nomadic pastoralism. The eighteen years (2001-2018)
Munkhtur Davaagerel, Basan Munkhchuluun, Uudus Bayarsaikhan   +2 more
doaj   +1 more source

Analysis of land surface temperature using Geospatial technologies in Gida Kiremu, Limu, and Amuru District, Western Ethiopia

Artificial Intelligence in Agriculture, 2022
Degradation of vegetation cover and expansion of barren land are remained the leading environmental problem at global level. Land surface temperature (LST), Normalized Difference Vegetation Index (NDVI), Normalized Difference Barren Index (NDBaI), and ...
Mitiku Badasa Moisa, Bacha Temesgen Gabissa, Lachisa Busha Hinkosa, Indale Niguse Dejene, Dessalegn Obsi Gemeda   +4 more
doaj   +1 more source

VEGETATION INDICES FOR IRRIGATED CORN MONITORING [PDF]

Engenharia Agrícola, 2020
Monitoring of large agricultural lands is often hampered by data collection logistics at field level. To solve such a problem, remote sensing techniques have been used to estimate vegetation indices, which can subsidize crop management decision-making ...
Francisco C. G. Alvino, Catariny C. Aleman, Roberto Filgueiras, Daniel Althoff, Fernando F. da Cunha   +4 more
doaj   +1 more source

Detection of Aquatic Plants Using Multispectral UAV Imagery and Vegetation Index

Remote Sensing, 2020
In this study, aquatic plants in a small reservoir were detected using multispectral UAV (Unmanned Aerial Vehicle) imagery and various vegetation indices.
Bonggeun Song, Kyunghun Park
doaj   +1 more source

Using UAV to Identify the Optimal Vegetation Index for Yield Prediction of Oil Seed Rape (Brassica napus L.) at the Flowering Stage

Remote Sensing, 2022
Suitability of the vegetation indices of normalized difference vegetation index (NDVI), blue normalized difference vegetation index (BNDVI), and normalized difference yellowness index (NDYI) obtained by means of UAV at the flowering stage of oil seed ...
Vojtěch Lukas, Igor Huňady, Antonín Kintl, Jiří Mezera, Tereza Hammerschmiedt, Julie Sobotková, Martin Brtnický, Jakub Elbl   +7 more
doaj   +1 more source

Estimation of the Normalized Difference Vegetation Index (NDVI) Variation for Selected Regions in Iraq for two Years 1990 & 2001 [PDF]

مجلة جامعة الانبار للعلوم الصرفة, 2012
The Normalized Difference Vegetation Index (NDVI) is commonly used as a measure of land surface greenness based on the assumption that NDVI value is positively proportional to the amount of green vegetation in an image pixel area.
Ahmed Asaad Najeeb
doaj   +1 more source

Drought monitoring and its effects on vegetation and water extent changes using remote sensing data in Urmia Lake watershed, Iran

Journal of Water and Climate Change, 2022
The assessment of drought hazards is important due to their socio-economic impacts on water resources, agriculture, and ecosystems. In this study, the effects of drought on changing water area and canopy of the Lake Urmia watershed in the northwest of ...
Jalil Helali, Shahab Asaadi, Teimour Jafarie, Maral Habibi, Saadoun Salimi, Seyed Erfan Momenpour, Salah Shahmoradi, Seyed Asaad Hosseini, Behzad Hessari, Vahideh Saeidi   +9 more
doaj   +1 more source

BRAZILIAN MIDWEST NATIVE VEGETATION MAPPING BASED ON GOOGLE EARTH ENGINE [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2020
Google Earth Engine (GEE) platform is an online tool, which generates fast solutions in terms of image classification and does not require high performance computers locally.
N. V. Estrabis, L. Osco, A. P. Ramos, W. N. Gonçalves, V. Liesenberg, H. Pistori, J. Marcato Junior   +6 more
doaj   +1 more source

Change Detection of Vegetation Cover by Ndvi Technique Using Geographic Information Systems (Gis) and Remote Sensing Technology in the Agricultural Region of Al_Wafra, Southern Part of Kuwait [PDF]

International Journal of Advanced Humanities Research, 2023
This study aims to calculate the change detection method used NDVI in vegetation cover of agricultural crops in the Al-Wafra agricultural area using the main index, NDVI - Normalized Difference Vegetation Index. This index was used to measure the area of
Intessar Shalaan
doaj   +1 more source