Results 21 to 30 of about 117,891 (325)

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

Estimation of vegetation traits with kernel NDVI

open access: yesISPRS Journal of Photogrammetry and Remote Sensing, 2023
Vegetation indices computed from spectral signatures are vastly used for monitoring the terrestrial biosphere. Indices are convenient proxies for canopy structure, and leaf pigment content, and consequently to estimate the photosynthetic activity of vegetation.
Wang, Qiang   +4 more
openaire   +2 more sources

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

NDVI relationship to monthly evaporation [PDF]

open access: yesGeophysical Research Letters, 1998
Normalized difference vegetation indices (NDVI), calculated from Landsat‐MSS images, were correlated with monthly total precipitation and estimates of monthly evaporation in a prairie environment. The highest value of the correlation coefficient (r=.80) was obtained between the monthly mean NDVI and estimated evaporation of the preceding month.
J. Szilagyi   +3 more
openaire   +1 more source

Contributions of natural and human factors to increases in vegetation productivity in China [PDF]

open access: yes, 2015
Increasing trends in vegetation productivity have been identified for the last three decades for many regions in the northern hemisphere including China.
Xiao, Jingfeng, Zhang, Li, Zhou, Yu
core   +2 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

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

Genetically modified Cotton species detection by LISS-III satellite data [PDF]

open access: yes, 2008
It is possible to infer the genetically modified species by using remotely sensed data. Using ERDAS software the algorithm of BT (Bacillus thuringiensis) Cotton in Punjab, India was developed successfully.
Amit Singh   +8 more
core   +3 more sources

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