Results 31 to 40 of about 59,716 (313)

Spatial evaluation of methane emissions in the communities of Warints and Yawi, Ecuador [PDF]

open access: yesCaspian Journal of Environmental Sciences
Methane is a greenhouse gas that has caused environmental repercussions on the planet. At the national level, spatial data are unavailable, so this study aimed to estimate the amount of methane (CH4) emissions in the communities of Warints and Yawi ...
Sandra López   +9 more
doaj   +1 more source

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

Climate Change Affected Vegetation Dynamics in the Northern Xinjiang of China: Evaluation by SPEI and NDVI

open access: yesLand, 2020
Drought and vegetation dynamics in the northern Xinjiang Uygur Autonomous Region of China (NXC), the centre of Asia with arid climate, were assessed using the standardized precipitation evapotranspiration index (SPEI) and the normalized difference ...
Nana Luo   +3 more
doaj   +1 more source

Mapping Evapotranspiration, Vegetation and Precipitation Trends in the Catchment of the Shrinking Lake Poopó

open access: yesRemote Sensing, 2019
Lake Poopó is located in the Andean Mountain Range Plateau or Altiplano. A general decline in the lake water level has been observed in the last two decades, coinciding roughly with an intensification of agriculture exploitation, such as quinoa ...
Juan Torres-Batlló   +2 more
doaj   +1 more source

Bayesian Method for Building Frequent Landsat-Like NDVI Datasets by Integrating MODIS and Landsat NDVI [PDF]

open access: yesRemote Sensing, 2016
Studies related to vegetation dynamics in heterogeneous landscapes often require Normalized Difference Vegetation Index (NDVI) datasets with both high spatial resolution and frequent coverage, which cannot be satisfied by a single sensor due to technical limitations.
Limin Liao   +4 more
openaire   +2 more sources

A GIS Assessment of the Green Space Percentage in a Big Industrial City (Dnipro, Ukraine)

open access: yesEkológia (Bratislava), 2023
Green spaces in an industrially polluted city are extremely important for the physical activity and mental health of its inhabitants. The study aim was to analyze the urban green space dynamics and the greening degree of different functional zones ...
Buchavyi Yuriy   +2 more
doaj   +1 more source

Analysis of urban growth effects on Land Surface Temperature (LST) increase using GIS: A case study of Chelghoum El Aïd city (1984-2024) [PDF]

open access: yesGlasnik Srpskog Geografskog Društva
The city of Chelghoum El Aïd has experienced rapid urban growth, primarily driven by a major urbanization event. This expansion has prioritized the development of natural and undeveloped spaces, rather than investing in urban infrastructure.
Zaari Achouak, Djeffal Djafar
doaj   +1 more source

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

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