Impacts of irrigation and nitrate fertilization scenarios on groundwater resources quantity and quality of the Almyros Basin, Greece

Lyra, Aikaterini; Λουκάς, Αθανάσιος; Sidiropoulos, Pantelis

doi:10.2166/ws.2021.097

Cited by 7 publications

(6 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Also, new modelling approaches to predict and/or monitor water dynamics (Kader et al 2021;Mridha & Rahman 2021;Sihag et al 2021;Tziatzios et al 2021;Xu et al 2021) or pollutants transport such as salinity (Daghari et al 2021;Yuan 2021) and nitrates (Bian et al 2021;Nie et al 2021) are provided. An important part of this SI is covered by optimal water allocation and the newest developments in irrigation management (Cortés-Ruiz & Azuz-Adeath 2021;Lyra et al 2021;Mahdavi 2021;Morianou et al 2021a;Wei et al 2021). Successfully tested methods for improving irrigation efficiency for quantity (Hui et al 2021a(Hui et al , 2021b and quality (Jie et al 2021;Lemos et al 2021;Lima et al 2021;Tao et al 2021;Xie & Hung 2021;Zhang et al 2021) are also addressed as one of the utmost prospectives in agricultural water management.…”

Section: This Special Issuementioning

confidence: 99%

Editorial: Could advances in geoinformatics, irrigation management and climate adaptive agronomic practices ensure the sustainability of water supply in agriculture?

Kourgialas

2021

Water Supply

View full text Add to dashboard Cite

The Food and Agriculture Organization (FAO) predicts that up to 2050, food production will increase by about 70% above today's levels. This increase in food production could be accomplished by developing more agricultural land and transitioning from rainfed to irrigated agriculture. The development of the agricultural sector is interrelated with the effective management of water resources as irrigated agriculture is the world's largest water consumer with trends of increasing irrigation needs and pollution load in the oncoming years (Ricciardi et al. 2020). Water supply in the rural sector is expected to be most affected by climate change with reduced crop yields due to declining water availability and abandonment of climate-disadvantaged parcels. Agricultural production stability faces many challenges related to climate-water effects, with the following being of utmost importance: changes in levels and frequency of precipitation, more frequent dry spells, increased extreme weather events including flash droughts/floods, losses of agricultural lands due to water erosion, salinization of coastal cultivated areas and freshwater, as well as surface and groundwater contamination by fertilizers or other agronomically related sources of pollution. Introducing and incorporating efficient use and management practices of irrigation water to new climate-smart production methods is a vital priority for major sectoral policies, notably the Common Agricultural Policy (CAP) (Kourgialas, 2021).In line with this, of high importance for water policy makers is to establish effective agricultural water management strategies to enhance preparedness and capacity to respond to the impacts of climate change and anthropogenic interventions. These strategies should focus on three key objectives, which, once they scale up, can increase the resilience of agriculture as a whole. These three objectives are related to: advanced geoinformatics tools, proper irrigation management and climatic wateradaptive agronomic practices (Grafton et al. 2018).Thereby, the answer to the question of this Editorial 'Could advances in geoinformatics, irrigation management and climate adaptive agronomic practices ensure the sustainability of water supply in agriculture?' is certainly YES. The sustainability of water supply in cropping systems could be effectively addressed based on the advantages that raised from the abovementioned key objectives divided in turn into the following scientific topics:

show abstract

Section: This Special Issuementioning

confidence: 99%

Editorial: Could advances in geoinformatics, irrigation management and climate adaptive agronomic practices ensure the sustainability of water supply in agriculture?

Kourgialas

2021

Water Supply

View full text Add to dashboard Cite

show abstract

“…The groundwater fluxes (Figure 3) have been simulated for the period of 1991 to 2018 for the scenarios of deficit irrigation (S1, S3) and deficit and rainfed conditions (S2, S4) and evaluated as described in the study of Lyra et al (2021a).…”

Section: Modflow Modelmentioning

confidence: 99%

“…The nitrates fluxes have been simulated with the MT3DMS model for the period of 1991 to 2018. The simulation was performed for all the four (4) scenarios (S1, S2, S3, S4) and evaluated as described in the study of Lyra et al (2021a). The simulation results show that the nitrate contamination in the aquifer is mostly affected by the irrigation practices and irrigation return flow, due to the semi-arid climate and the low recharge, especially, in the northern and southern parts of the aquifer.…”

Section: Mt3dms Modelmentioning

confidence: 99%

“…The chloride fluxes have been simulated using the SEAWAT model for the period of 1991 to 2018 and the simulation was performed for all the four (4) scenarios (S1, S1, S3, S4) and evaluated as described in the study of (Lyra et al 2021a). The maximum chlorides concentration reduction in all scenarios reach a value of 18,000 mg/L in the north coastline area that is salinized in the baseline scenario S0 (Lyra et al 2021b).…”

Section: Seawat Modelmentioning

confidence: 99%

“…

The following corrigendum regards a traceback error in the irrigation return flows of modelled scenarios in the study of Lyra et al (2021a) resulting in water balance and groundwater nitrate and chloride concentrations, that correspond approximately to doubled groundwater recharge from deficit irrigation, and deficit and rainfed irrigation practices as compared to the actual ones of the present corrigendum. The authors apologize for this mistake.

…”

mentioning

confidence: 93%

See 2 more Smart Citations

Corrigendum: Water Supply 21 (6), 2748–2759: Impacts of irrigation and nitrate fertilization scenarios on groundwater resources quantity and quality of Almyros Basin, Greece

2021

Self Cite

View full text Add to dashboard Cite

Simulation and Evaluation of Water Resources Management Scenarios Under Climate Change for Adaptive Management of Coastal Agricultural Watersheds

Lyra

Λουκάς

2022

Water Resour Manage

View full text Add to dashboard Cite

The main objective of this paper is to analyze the impact of climate change on water resources management and groundwater quantity and quality in the coastal agricultural Almyros Basin, in Greece. Intensive groundwater abstractions for irrigation and nitrogen fertilization for crop production maximization, have caused a large water deficit, nitrate pollution, as well as seawater intrusion in the Almyros aquifer system. Multi-model climate projections for Representative Concentration Pathways (RCPs 4.5 and 8.5) from the Med-CORDEX database for precipitation and temperature have been used to evaluate the impacts of climate change on the study area. The multi-model climate projections have been bias-corrected with Delta, Delta change of Mean and Variance, Quantile Delta Change, Quantile Empirical Mapping, and Quantile Gamma Mapping methods, and statistically tested to find the best GCM/RCM multi-model ensemble. Simulation of coastal water resources has been performed using an Integrated Modelling System (IMS) that contains connected models of surface hydrology (UTHBAL), groundwater hydrology (MODFLOW), nitrate leaching/crop growth (REPIC), nitrate pollution (MT3DMS), and seawater intrusion (SEAWAT). The results indicate that the best climate multi-model ensemble consists of three (3) climate models for both RCP4.5 and RCP8.5 using the Quantile Empirical Mapping bias-correction method. The IMS was applied for historical and future periods with observed and simulated meteorological inputs (e.g. precipitation and temperature) and various irrigation and agronomic scenarios and water storage works development (i.e. reservoirs). The results indicate that at least deficit irrigation and deficit irrigation along with rain-fed cultivation schemes, combined with or without the development and operation of reservoirs, should be applied to overcome the degradation of groundwater quality and quantity in the study basin. Based on the findings of this work, the water resources management should be adaptive to tackle the water resources problems of the Almyros Basin.

show abstract

Impacts of irrigation and nitrate fertilization scenarios on groundwater resources quantity and quality of the Almyros Basin, Greece

Cited by 7 publications

References 11 publications

Editorial: Could advances in geoinformatics, irrigation management and climate adaptive agronomic practices ensure the sustainability of water supply in agriculture?

Editorial: Could advances in geoinformatics, irrigation management and climate adaptive agronomic practices ensure the sustainability of water supply in agriculture?

Corrigendum: Water Supply 21 (6), 2748–2759: Impacts of irrigation and nitrate fertilization scenarios on groundwater resources quantity and quality of Almyros Basin, Greece

Simulation and Evaluation of Water Resources Management Scenarios Under Climate Change for Adaptive Management of Coastal Agricultural Watersheds

Contact Info

Product

Resources

About