Elevation-dependent sensitivity of spectral greening to temperature and precipitation in the Western Himalayas
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60460709%3A41330%2F25%3A102957" target="_blank" >RIV/60460709:41330/25:102957 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1088/1748-9326/adc9c7" target="_blank" >https://doi.org/10.1088/1748-9326/adc9c7</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1088/1748-9326/adc9c7" target="_blank" >10.1088/1748-9326/adc9c7</a>
Alternative languages
Result language
angličtina
Original language name
Elevation-dependent sensitivity of spectral greening to temperature and precipitation in the Western Himalayas
Original language description
Mountain ecosystems are experiencing significant changes due to climate change. Globally, a prevailing greening trend has been observed over the past decades using remote-sensing normalized difference vegetation index (NDVI), suggesting increasing vegetation cover and primary productivity. However, NDVI responses to warming differ across regions. Cold, energy-limited alpine and tundra ecosystems tend to respond positively to warming, while arid, water-limited ecosystems may experience reduced NDVI due to higher transpiration rates limiting plant growth. Additionally, CO2 fertilization effect enhances vegetation productivity by improving plant water use efficiency. This study investigates the drivers of temporal trends in annual maximum NDVI (NDVImax) along an elevational gradient in the arid Western Himalaya (Ladakh, India). We hypothesize that NDVImax will be more sensitive to precipitation anomalies at lower elevations, whereas at higher elevations it will be more sensitive to temperature anomalies. Using Landsat satellite data from 2001 to 2022, we related NDVImax temporal anomalies to temperature and precipitation obtained from the ERA5-Land reanalysis dataset, and local snow cover from MODIS. Our results show complex interactions between climate and elevation that influence NDVImax. Contrary to our expectations, precipitation exhibited a strong positive effect on NDVImax across all elevations and seasons, except for autumn at higher elevations. Temperature effects were weaker and varied across seasons and elevations. Higher summer temperatures increased NDVImax at higher elevations but decreased it at lower elevations. We observed a multidecadal greening trend independent of temperature and precipitation, with this greening being more pronounced at lower elevations. This study highlights the importance of context dependency in understanding vegetation dynamics in fragile, low-productivity mountain ecosystems.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10511 - Environmental sciences (social aspects to be 5.7)
Result continuities
Project
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Continuities
S - Specificky vyzkum na vysokych skolach
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Environmental Research Letters
ISSN
1748-9318
e-ISSN
1748-9318
Volume of the periodical
20
Issue of the periodical within the volume
5
Country of publishing house
CZ - CZECH REPUBLIC
Number of pages
11
Pages from-to
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UT code for WoS article
001487310900001
EID of the result in the Scopus database
2-s2.0-105005144307