• Sorted by Date • Sorted by Last Name of First Author •
Nigatu, Zemede M., Fan, Dongming, You, Wei, Melesse, Assefa M., Pu, Lun, Yang, Xinchun, Wan, Xiangyu, and Jiang, Zhongshan, 2022. Crop production response to soil moisture and groundwater depletion in the Nile Basin based on multi-source data. Science of the Total Environment, 825:154007, doi:10.1016/j.scitotenv.2022.154007.
• from the NASA Astrophysics Data System • by the DOI System •
@ARTICLE{2022ScTEn.82554007N,
author = {{Nigatu}, Zemede M. and {Fan}, Dongming and {You}, Wei and {Melesse}, Assefa M. and {Pu}, Lun and {Yang}, Xinchun and {Wan}, Xiangyu and {Jiang}, Zhongshan},
title = "{Crop production response to soil moisture and groundwater depletion in the Nile Basin based on multi-source data}",
journal = {Science of the Total Environment},
keywords = {Groundwater drought, Agricultural drought, Land use land cover change, Food security, Soil moisture depletion, Triple Collocation Analysis},
year = 2022,
month = jun,
volume = {825},
eid = {154007},
pages = {154007},
abstract = "{Soil moisture (SM) and groundwater (GW) depletion triggered by
anthropogenic and natural climate change are influencing food
security via crop production per capita decrease in the Nile
River Basin (NRB). However, to the best of our understanding,
the causes and impact of SM and GW depletion have not been
studied yet comprehensively in the NRB. In this study, GW is
derived from the Gravity Recovery and Climate Experiment (GRACE)
mission, and SM was estimated using the Triple Collocation
Analysis (TCA). SM/GW depletion causes were evaluated via the
Land Use Land Cover (LULC) and rainfall/temperature change
analysis, whereas impact analysis focused on crop production per
capita reduction (food insecurity) during SM depletion. The
major findings of this study are 1) TCA analyzed SM show a
decreasing trend (â0.06 mm/yr) in agricultural land while
increasing (+0.21 mm/yr) in forest land, 2) LULC analysis
indicated a vast increment of agricultural land (+9\%) and
bareland (+9\%) although the decreasing pattern of forest
(â1.5\%) and shrubland (â6.9\%) during 1990{\textendash}2019; 3)
the impact of SM depletion on crop production per capita caused
food insecurity during a drought year, 4) agriculture drought
indices and crop production per capita show high correlations
(R<SUP loc=``post''>2</SUP> = 0.86 to 0.60) demonstrated that
Vegetation Supply Water Index (VSWI) could provide strategic
warning of drought impacts on rainfed agricultural regions. In
conclusion, SM and GW depletions are mainly caused by human-
induced and climate change factors imposing food insecurity
challenges in the NRB coupled with increasing temperature and
excessive water extraction for irrigation. Therefore, it is
highly recommended to rethink and reverse SM/GW depletion
causing factors to sustain food security in NRB and similar
basins.}",
doi = {10.1016/j.scitotenv.2022.154007},
adsurl = {https://ui.adsabs.harvard.edu/abs/2022ScTEn.82554007N},
adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}
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