Mon Oct 13, F. Flechtner
• Sorted by Date • Sorted by Last Name of First Author •
Satgé, Frédéric, Hussain, Yawar, Xavier, Alvaro, Zolá, Ramiro Pillco, Salles, Leandro, Timouk, Franck, Seyler, Frédérique, Garnier, Jérémie, Frappart, Frédéric, and Bonnet, Marie-Paule, 2019. Unraveling the impacts of droughts and agricultural intensification on the Altiplano water resources. Agricultural and Forest Meteorology, 279:107710, doi:10.1016/j.agrformet.2019.107710.
• from the NASA Astrophysics Data System • by the DOI System •
@ARTICLE{2019AgFM..27907710S,
author = {{Satg{\'e}}, Fr{\'e}d{\'e}ric and {Hussain}, Yawar and {Xavier}, Alvaro and {Zol{\'a}}, Ramiro Pillco and {Salles}, Leandro and {Timouk}, Franck and {Seyler}, Fr{\'e}d{\'e}rique and {Garnier}, J{\'e}r{\'e}mie and {Frappart}, Fr{\'e}d{\'e}ric and {Bonnet}, Marie-Paule},
title = "{Unraveling the impacts of droughts and agricultural intensification on the Altiplano water resources}",
journal = {Agricultural and Forest Meteorology},
keywords = {Climate, Agriculture, Water scarcity, Hydrological drought, Remote sensing},
year = 2019,
month = dec,
volume = {279},
eid = {107710},
pages = {107710},
abstract = "{During the last decades, agriculture has drastically increased over the
South American Andean Plateau (Altiplano), resulting in
extensive changes in land cover from native vegetation to
essentially Quinoa crop. Along with climatic variability, these
land use changes appear as a catalyst in worsening the already
existing drought events and water scarcity processes. Hence,
understanding their relative contributions to the regional
desertification process is crucial for sustainable water-use
adaptation, but also is quite ambiguous because of water
resource data scarcity over the Altiplano. Therefore, in the
present study, an attempt to measure the impact of severe
droughts and agricultural intensification on the water resources
has been made using remote sensing datasets. The first step was
dedicated to the validation of newly released CHIRPS v.2
precipitation and GLEAM v.3 potential evapotranspiration
products by comparing their estimates with the results obtained
from gauges data. Then, the Standardized Precipitation Index
(SPI) was used to describe past hydro-meteorological drought
events in terms of their spatial extent, duration, intensity and
their impacts on the regional water resources. Finally, the
dynamic trends in the spatial extent of the Quinoa crop and the
meteorological conditions derived from CHIRPS v.2 and GLEAM v.3
were compared with the Vegetation Condition Index (VCI) and the
Total Water Storage (TWS) derived from AVHRR and GRACE data
respectively, to observe the respective influence of agriculture
and climate variability on the regional hydrological system. A
significant increase in Quinoa crop extent is observed from 2001
which corresponds to a significant decrease in regional VCI and
TWS. Based on this trend, agriculture appears as a contributing
factor in the water scarcity process over the Altiplano. The
outcomes of this study will contribute to local decision making
for a better water management and hydro-meteorological
monitoring system.}",
doi = {10.1016/j.agrformet.2019.107710},
adsurl = {https://ui.adsabs.harvard.edu/abs/2019AgFM..27907710S},
adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}
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