Agrohydrological analysis of groundwater recharge and land use changes in the Pampas of Argentina

Kroes, J.G.; Dam, J.C. van; Supit, Iwan; Abelleyra, Diego de; Verón, Santiago R.; Wit, Allard de; Boogaard, H.L.; Angelini, Marcos Esteban; Damiano, Francisco; Groenendijk, P.; Wesseling, J.G.; Veldhuizen, A.A.

doi:10.1016/j.agwat.2018.12.008

Cited by 37 publications

(14 citation statements)

References 42 publications

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“…Spatially differentiated strategies regarding changes in land use and land cover can be employed to reduce the hazard (see Hashemi et al, 2016 for a comprehensive review). For instance, conversion of cropland to pasture or forest conversions can reduce N leaching (Li et al, 2020;Liu et al, 2013;Rode et al, 2009) and enhance soil water storage (Kroes et al, 2019), thus positively affecting both the hazard and vulnerability. However, these measures may have limited effectiveness when employed in areas with high vulnerability.…”

Section: Usefulness In the Definition Of Spatially Targeted Measures To Tackle Groundwater Contaminationmentioning

confidence: 99%

Development of a groundwater contamination index based on the agricultural hazard and aquifer vulnerability: Application to Portugal

Serra¹,

Cameira

Cordovil³

et al. 2021

Science of The Total Environment

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Section: Usefulness In the Definition Of Spatially Targeted Measures To Tackle Groundwater Contaminationmentioning

confidence: 99%

Development of a groundwater contamination index based on the agricultural hazard and aquifer vulnerability: Application to Portugal

Serra¹,

Cameira

Cordovil³

et al. 2021

Science of The Total Environment

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“…Underestimations are mostly related to water stress factors in the Argentinian Pampas and the United States Midwest. Simulated water stress in these areas is probably higher due to shallow groundwater tables in these areas [114,115] that are not well simulated by our model framework.…”

Section: Discussionmentioning

confidence: 87%

Worldwide water constraints on attainable irrigated production for major crops

Droppers

Supit

Vliet

et al. 2021

Preprint

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Currently, irrigation withdrawals are resulting in groundwater exploitation and unmet ecosystem water requirements. However, to achieve worldwide food security, there is a need to focus on sustainable intensification of crop production. This requires a more sustainable use of water for irrigated croplands. Our presentation focuses on quantifying attainable wheat, maize, rice and soybean production on currently irrigated cropland under sustainable water use. Attainable production accounts for increases in nutrient application, while limiting irrigation withdrawals to renewable water availability and without compromising river ecosystem water requirements.Attainable crop production was quantified using a newly developed two-way coupling between the VIC hydrological model (Droppers et al., 2020) and the WOFOST crop model (Wit et al., 2019). This VIC-WOFOST model framework comprehensively simulates biophysical processes related to water availability and crop growth under water and nutrient limitations. Our results indicate that worldwide crop nitrogen uptake should increase by 20%, to achieve production gap closure. However, worldwide irrigation withdrawals should decrease by more than a third in order to ensure sustainable water use. Under these constraints, decreases in attainable irrigated yields of 5% are expected (14% decrease due to water constraints, 9% increase due to increased nutrient availability). Moreover, achievable irrigated crop production in the extensively irrigated croplands of north-eastern China, Pakistan and north-western India would be reduced by up to a third.In addition we explored the impact of atmospheric CO2 enrichment on worldwide attainable irrigated production using VIC-WOFOST. Increased atmospheric CO2 concentration increases crop assimilation and decreases crop transpiration. Initial results show that these effects may offset the unsustainable water withdrawals and increase attainable irrigated yields.References:Droppers, B., Franssen, W. H., Van Vliet, M. T., Nijssen, B., & Ludwig, F. (2020): Simulating human impacts on global water resources using VIC-5. Geoscientific Model Development, 13(10), 5029-5052, https://doi.org/10.5194/gmd-13-5029-2020de Wit, A., Boogaard, H., Fumagalli, D., Janssen, S., Knapen, R., van Kraalingen, D., ... & van Diepen, K. (2019): 25 years of the WOFOST cropping systems model. Agricultural Systems, 168, 154-167, https://doi.org/10.1016/j.agsy.2018.06.018.

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“…In the arid and semi-arid regions that have sparse precipitation, the changes in groundwater and rainfall have a significant impact on soil water movement. Shallow groundwater may affect surface processes and states through capillary rise or direct root water uptake and interaction with soil, vegetation and climate (Soylu et al, 2011;Kroes et al, 2019). In areas with shallow groundwater, the soil evaporation of bare sandy land influence the efficiency that the precipitation turns into effective soil water.…”

Section: Introductionmentioning

confidence: 99%

The Effects of Groundwater Depth on the Soil Evaporation in Horqin Sandy Land, China

et al. 2021

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The interactions between groundwater depth and soil hydrological processes, play an important role in both arid and semi-arid ecosystems. The effect of groundwater depth on soil water variations were neglected or not explicitly treated. In this paper, we combine a simulation experiment and a water flow module of HYDRUS-1D model to study the variation in soil evaporation under different groundwater depth conditions and the relationship between groundwater depth and evaporation efficiency in Horqin Sandy Land, China. The results showed that with an increase in groundwater depth, the evaporation of soil and the recharge of groundwater decrease. In this study, the groundwater recharge did not account for more than 21% of the soil evaporation for the depths of groundwater examined. The soil water content at 60 cm was less affected by the evaporation efficiency when the mean groundwater depth was 61 cm during the experimental period. In addition, the evaporation efficiency (the ratio of actual evaporation to potential evaporation) decreases with the increase in groundwater depth during the experiment. Furthermore, the soil evaporation was not affected by groundwater when the groundwater depth was deeper than 239 cm.

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Agrohydrological analysis of groundwater recharge and land use changes in the Pampas of Argentina

Cited by 37 publications

References 42 publications

Development of a groundwater contamination index based on the agricultural hazard and aquifer vulnerability: Application to Portugal

Development of a groundwater contamination index based on the agricultural hazard and aquifer vulnerability: Application to Portugal

Worldwide water constraints on attainable irrigated production for major crops

The Effects of Groundwater Depth on the Soil Evaporation in Horqin Sandy Land, China

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