GRACE and GRACE-FO Related Publications (no abstracts)

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Crop production response to soil moisture and groundwater depletion in the Nile Basin based on multi-source data

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.

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@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 (‑0.06 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
        (‑1.5\%) and shrubland (‑6.9\%) 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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