Results 21 to 30 of about 16,752 (252)

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

The Normalized Difference Vegetation Index (NDVI): unforeseen successes in animal ecology [PDF]

Climate Research, 2011
This review highlights the latest developments associated with the use of the Normal- ized Difference Vegetation Index (NDVI) in ecology. Over the last decade, the NDVI has proven extremely useful in predicting herbivore and non-herbivore distribution, abundance and life history traits in space and time.
N Pettorelli, S Ryan, T Mueller, N Bunnefeld, B Jedrzejewska, M Lima, K Kausrud   +6 more
openaire   +1 more source

Detection of historical landscape changes in Lake Victoria Basin, Kenya, using remote sensing multi-spectral indices

Watershed Ecology and the Environment, 2022
The Kenyan Lake Victoria basin has been experiencing land degradation and overexploitation as seen in various landscape changes. Quantifying and understanding the nature of these changes is essential for management decision-making.
Dancan O. Onyango, Stephen B. Opiyo
doaj   +1 more source

Analysis of vegetation recovery surrounding a restored wetland using the normalized difference infrared index (NDII) and normalized difference vegetation index (NDVI) [PDF]

International Journal of Remote Sensing, 2018
Watershed restoration efforts seek to rejuvenate vegetation, biological diversity, and land productivity at Cienega San Bernardino, an important wetland in southeastern Arizona and northern Sonora,...
Natalie R. Wilson, Laura M. Norman
openaire   +1 more source

Response of the Normalized Difference Vegetation Index (Ndvi) to Snow Cover Changes on the Qinghai-Tibet Plateau

Remote Sensing, 2023
The eco-hydrological process related to vegetation on the Qinghai–Tibet Plateau is special, and the impact of snow cover on the growth of vegetation is unique and important. In this study, we analyzed the multi-year variations in the normalized difference vegetation index (NDVI) and snow cover on the Qinghai–Tibet Plateau from spatial and temporal ...
Yuantao Zhou, Fenggui Liu, Guoming Zhang, Jing’ai Wang   +3 more
openaire   +2 more sources

Dual Vegetation Index Analysis and Spatial Assessment in Kota Bharu, Kelantan using GIS and Remote Sensing [PDF]

BIO Web of Conferences
Vegetation serves as an indicator of environmental conditions in ecological classifications. In addition, vegetation index analysis can also benefit farmers and agricultural planners by optimising crop selection and irrigation practices.
Daliman Shaparas, Anak Michael Mary Jane, Rendra Pradnya Paramarta Raditya, Sukiyah Emi, Hadian Mohamad Sapari Dwi, Sulaksana Nana   +5 more
doaj   +1 more source

Methodological evaluation of vegetation indexes in land use and land cover (LULC) classification

Geology, Ecology, and Landscapes, 2020
Vegetation indices are intended to emphasize the vegetation spectral behavior in relation to the soil and other terrestrial surface targets. The objective of this study was to evaluate the vegetation cover types present in the municipality of Campo Belo ...
Vanessa Sousa da Silva, Gabriela Salami, Marília Isabelle Oliveira da Silva, Emanuel Araújo Silva, José Jorge Monteiro Junior, Elisiane Alba   +5 more
doaj   +1 more source