Results 31 to 40 of about 109,697 (288)

Mapping evapotranspiration variability over a complex oasis-desert ecosystem based on automated calibration of Landsat 7 ETM+ data in SEBAL [PDF]

open access: yes, 2019
Fragmented ecosystems of the desiccated Aral Sea seek answers to the profound local hydrologically- and water-related problems. Particularly, in the Small Aral Sea Basin (SASB), these problems are associated with low precipitation, increased temperature,
Cao, Liangzhong   +6 more
core   +2 more sources

Land Surface Temperature Change Observation and Spatial Area Determination with Satellite Images in the Fire Area

open access: yesDoğal Afetler ve Çevre Dergisi, 2022
Fighting fires is an extremely important issue to prevent the loss of forests. With the developing technology, satellite images have become one of the basic tools for fighting fire over time. By using various indexes, it is possible to detect the burning
Alperen Cihan, Kübra Cerit
doaj   +1 more source

Using LANDSAT time series for assessing reforestation on clear cuts in Bryansk region [PDF]

open access: yesВопросы лесной науки, 2019
This paper submitted the method of remote sensed estimate the forest artificial regeneration (tree planting). The objective was to designate the moment of transition from clear cuts to forested lands.
E.I. Belova, D.V. Ershov
doaj   +1 more source

Tule elk selection of surface water and forage is mediated by season and drought

open access: yesCalifornia Fish and Wildlife Journal, 2022
Climate change is expected to affect arid-system ungulate populations by altering the distribution and availability of critical resources such as water and forage, particularly through more frequent and extreme droughts.
Adam S. Mohr   +2 more
doaj   +1 more source

Crop Yield Estimation Using NDVI: A Comparison of Various NDVI Metrics

open access: yes, 2021
The objective of this study is to examine and compare multiple Normalized Difference Vegetation Index (NDVI) metrics for estimating crop yield. There are several terms used to describe NDVI metrics including: process methods, aggregation techniques, phenological indices, and aggregation metrics.
openaire   +2 more sources

Online measurement of soil organic carbon as correlated with wheat normalised difference vegetation index in a vertisol field [PDF]

open access: yes, 2014
This study explores the potential of visible and near infrared (vis-NIR) spectroscopy for onlinemeasurement of soil organic carbon (SOC). It also attempts to explore correlations and similarities between the spatial distribution of SOC and normalized ...
Mouazen, Abdul Mounem   +3 more
core   +4 more sources

Optimalisasi Transformasi Spektral Ui, Ndbi, Ndvi Dan Kombinasi Tranformasi Spektral Ui – Ndvi Dan Ndbi - Ndvi Guna Mendeteksi Kepadatan Lahan Terbangun Di Kota Magelang

open access: yesJAGAT (Jurnal Geografi Aplikasi dan Teknologi), 2017
Penggunaan citra dengan resolusi menengah guna memndeteksi kepadatan lahan terbangun pada saat ini belum dimanfaatkan secara optimal, karena sulitnya menbedakan lahan terbangun dan lahan terbuka/kosong.Penelitian ini bertujuan untuk nmengkaji kemampuan tranformasi spectral dan kombinasinya guna mendeteksi kepadatan lahan terbangun dan menkaji pola ...
Kurniawan, Surya   +2 more
openaire   +2 more sources

Inherent Reflectance Variability of Vegetation

open access: yesAgriculture, 2019
With the inception of small unmanned aircraft systems (sUAS), remotely sensed images have been captured much closer to the ground, which has meant better resolution and smaller ground sample distances (GSDs).
Baabak Mamaghani   +2 more
doaj   +1 more source

Detecting and predicting spatial and interannual patterns of temperate forest springtime phenology in the eastern U.S. [PDF]

open access: yes, 2002
We performed a diagnostic analysis of AVHRR-NDVI and gridded, temperature data for the deciduous forests of the eastern U.S., calibrating temperature accumulation model with satellite data for 1982–1993.
Aber, John   +3 more
core   +2 more sources

TREE AGE AS ADJUSTMENT FACTOR TO NDVI [PDF]

open access: yesRevista Árvore, 2018
ABSTRACT This study aimed to increase satellite-derived Normalized Difference Vegetation Index (NDVI) sensitivity to biophysical parameters changes with aid of a forest age-based adjustment factor. This factor is defined as a ratio between stand age and age of rotation, which value multiplied by Landsat-5/TM-derived NDVI generated the so-called ...
Berra, Elias Fernando   +2 more
openaire   +5 more sources

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