Results 21 to 30 of about 21,394 (244)

Effects of population spatial redistribution on vegetation greenness: A case study of Chongqing, China

open access: yesEcological Indicators, 2022
With the continuous increase in urbanization and non-farm wages, many rural labor forces have transferred to urban areas, significantly changing the population distribution and affecting vegetation restoration and ecological environment improvement. This
Dan Lu   +6 more
doaj   +1 more source

Spatial Enhancement of Modis Leaf Area Index Using Regression Analysis with Landsat Vegetation Index [PDF]

open access: yesIGARSS 2018 - 2018 IEEE International Geoscience and Remote Sensing Symposium, 2018
The Leaf Area Index (LAI) is an important indicator of vegetation development which can be used as an input parameter in hydrological and biochemical models (e.g. crop models for yield prediction and forecast) and is, thus, relevant information to monitor food production and to feed an early warning system for famine crisis.
Georgios Ovakoglou   +9 more
openaire   +3 more sources

Forest cover assessment using remote-sensing techniques in Crete Island, Greece

open access: yesOpen Geosciences, 2021
Remote-sensing satellite images provided rapid and continuous spectral and spatial information of the land surface in the Sougia River catchment by identifying the major changes that have taken place over 20 years (1995–2015). Vegetation indices (VIs) of
Elhag Mohamed   +2 more
doaj   +1 more source

Satellite monitoring of vegetation dynamics: Sensitivity enhancement by the wide dynamic range vegetation index [PDF]

open access: yesGeophysical Research Letters, 2004
Synoptic monitoring of vegetation dynamics relies on satellite observations of the distinctive spectral contrast between red and near infrared reflectance that photosynthetically active green vegetation exhibits. It has long been recognized that the Normalized Difference Vegetation Index (NDVI) suffers a rapid decrease of sensitivity at moderate‐to ...
Viña, Andrés   +2 more
openaire   +1 more source

RELATIONSHIP BETWEEN LAND COVER AND VEGETATION INDICES. CASE STUDY: EGHLID PLAIN, FARS PROVINCE, IRAN.

open access: yesEuropean Journal of Geography, 2023
In this study, the Visible Atmospherically Resistant Index (VARI), Weighted Difference Vegetation Index (WDRVI), Enhanced Vegetation Index (EVI), Optimized Soil-Adjusted Vegetation Index (OSAVI), Atmospherically resistant vegetation index (ARVI), SAVI ...
Marzieh MOKARRAM   +2 more
doaj   +2 more sources

Komparasi Luas Tutupan Lahan di Kota Bandar Lampung Berdasarkan Algoritma NDVI (Normalized Difference Vegetation Index) dan EVI (Enhanced Vegetation Index)

open access: yesJurnal Geosains dan Remote Sensing, 2021
Lahan adalah salah satu sumber daya alam penting yang sangat dibutuhkan oleh makhluk hidup baik hewan, tumbuhan, dan manusia untuk berpijak, sebagai tempat hidup serta melakukan kegiatan kehidupan serta untuk memenuhi kebutuhannya.
Luvi Roma Doni   +4 more
doaj   +1 more source

Flash drought development and cascading impacts associated with the 2010 Russian heatwave

open access: yesEnvironmental Research Letters, 2020
The 2010 western Russian heatwave was characterized by historically high surface temperatures that led to devastating impacts on the environment, economy, and society.
Jordan I Christian   +4 more
doaj   +1 more source

Multiple Greenness Indexes Revealed the Vegetation Greening during the Growing Season and Winter on the Tibetan Plateau despite Regional Variations

open access: yesRemote Sensing, 2023
Vegetation is an essential component of terrestrial ecosystems and supplies multiple ecosystem benefits and services. Several indices have been used to monitor changes in vegetation communities using remotely-sensed data. However, only a few studies have
Jinxia Lv   +4 more
doaj   +1 more source

Phenological Dynamics of Vegetation Using the Enhanced Vegetation Index (EVI) in Regions of Bahia State

open access: yesJournal of Hyperspectral Remote Sensing, 2018
The purpose of this study is to analyze the dynamics of EVI (Enhanced Vegetation Index) variability in different time scales of the different biomes in the state of Bahia. Images of the MODIS / Terra (Moderate Resolution Imaging Spectroradiometer) sensor with spatial resolution of 1km were used for the period between 2001 and 2015.
Wanessa Luana De Brito Costa   +3 more
openaire   +2 more sources

Crop Classification Based on a Novel Feature Filtering and Enhancement Method

open access: yesRemote Sensing, 2019
Vegetation indices, such as the normalized difference vegetation index (NDVI) or enhanced vegetation index (EVI) derived from remote sensing images, are widely used for crop classification.
Limin Wang   +4 more
doaj   +1 more source

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