The Science of The Total Environment, Год журнала: 2022, Номер 862, С. 160774 - 160774
Опубликована: Дек. 10, 2022
Язык: Английский
The Science of The Total Environment, Год журнала: 2022, Номер 859, С. 160263 - 160263
Опубликована: Ноя. 17, 2022
We examined the effects of hydrological variables such as irrigation area, efficiency and water storage on resilience (mostly commercial) irrigated agriculture to drought in a semi-arid catchment South Africa. formulated conceptual framework termed 'Water, Efficiency, Resilience, Drought' (WERD) an accompanying spreadsheet model. These allow be analysed via accounts key indicator Days Day Zero (DDZ). This represents number days that pre- within-drought supply available is withdrawn down zero face prolonged drought. A higher DDZ (e.g. >300 days) indicates greater whilst lower <150 signals resilience. Drought arises through land management decisions underpinned by four types capacities; absorptive, adaptive, anticipative transformative. For case study, analyses showed irrigators, with currently approximately 23,000 ha under irrigation, have historically absorbed adapted events construction adoption more efficient practices resulting 260 days. However, not fully anticipating future climate water-related risks, irrigators are arguably maladaptive pathway gains, other being used increase command areas 28,000 or more, decreasing their capacity absorb droughts. areal growth increases withdrawals depletion, further stresses catchment, reduces DDZs 130 indicating much Our approach, supported supplementary material, allows stakeholders understand consequences order to; reconcile competition between rising demands, consider new storage; improve agricultural planning; enhance governance.
Язык: Английский
Процитировано
48
Cambridge Prisms Water, Год журнала: 2023, Номер 1
Опубликована: Янв. 1, 2023
Abstract Given the increasing demand for high-quality food and protein, global security remains a challenge, particularly in face of change. However, since agriculture, water are inextricably linked, they need to be examined via an interdisciplinary lens. Sociohydrology was introduced from post-positivist perspective explore describe bidirectional feedbacks dynamics between human systems. This review situates sociohydrology agricultural domain, highlighting its contributions explaining unintended consequences management interventions, addressing climate change impacts due to/on agriculture incorporating behaviour into description has combined social psychological insights with novel data sources diverse multi-method approaches model behaviour. as agriculturalists change, can better use concepts resilience thinking more explicitly identify gaps terms desirable properties resilient systems, potentially informing holistic adaptation policy.
Язык: Английский
Процитировано
19
Frontiers in Plant Science, Год журнала: 2024, Номер 15
Опубликована: Март 12, 2024
Introduction High-throughput phenotyping technologies together with metabolomics analysis can speed up the development of highly efficient and effective biostimulants for enhancing crop tolerance to drought stress. The aim this study was examine morphophysiological metabolic changes in tomato plants foliarly treated two protein hydrolysates obtained by enzymatic hydrolysis vegetal proteins from Malvaceae (PH1) or Fabaceae (PH2) comparison a control treatment, as well investigate mechanisms involved enhancement plant resistance repeated stress cycles. Methods A device used daily monitoring traits while untargeted carried out leaves best performing treatment based on phenotypic results. Results PH1 most water due better recovery digital biomass 3D leaf area after each event PH2 mitigating only during period first event. Metabolomics data indicated that modified primary metabolism increasing concentration dipeptides fatty acids untreated control, secondary regulating several compounds like phenols. In contrast, hormones detoxification signal molecules against reactive oxygen species were downregulated control. Conclusion above findings demonstrated advantages combined phenomics-metabolomics approach elucidating relationship between associated biostimulant-mediated increase events.
Язык: Английский
Процитировано
6
Journal of Hydrology, Год журнала: 2022, Номер 612, С. 128053 - 128053
Опубликована: Июнь 15, 2022
Язык: Английский
Процитировано
24
Environmental and Sustainability Indicators, Год журнала: 2024, Номер 25, С. 100544 - 100544
Опубликована: Ноя. 28, 2024
Язык: Английский
Процитировано
5
Journal of Environmental Management, Год журнала: 2024, Номер 355, С. 120403 - 120403
Опубликована: Фев. 29, 2024
While socioeconomic and institutional factors are crucial in explaining the onset evolution of conflicts, recent research suggests that climate change is a further indirect driver acting as "threat multiplier". This paper focuses on concept vulnerability to both conflicts explain why some locations more likely engage armed than others presence similar level exposure climatic changes. In particular, by means Spatial Autoregressive Model, we identify set local-specific increase conflict risk East Africa. We employ georeferenced database with resolution 25 × km, covering period 1997–2016. Results from our analysis provide interesting insights: first, does not per se, but only pre-existing vulnerabilities. Second, resource access play key role driving climate-conflict nexus especially urban areas. increased whenever power distributed such way ensure an equitable distribution resources. Overall, findings suggest that, addressing prevent adaptive capacity resources, societies may benefit terms diminished alleviation impacts.
Язык: Английский
Процитировано
4
Agricultural Water Management, Год журнала: 2025, Номер 308, С. 109279 - 109279
Опубликована: Янв. 2, 2025
Язык: Английский
Процитировано
0
Water Economics and Policy, Год журнала: 2025, Номер unknown
Опубликована: Янв. 27, 2025
This paper reviews recent advances in the motivation, conceptualization, development, application, and assessment of hydroeconomic models (HEMs), for which these are implemented by conducting a analysis (HEA). It addresses various dimensions HEA, including problems motivating need an HEM, roles policy debates informed HEMs, important uses achievements scientific literature performed use future improvements desired as well one simple prototype HEM. Supplementary material is included describing some contributions made to with special attention given four individual contributors water resource economics generally, criteria credibility, description more popular mathematical programming packages used build
Язык: Английский
Процитировано
0
Agronomy, Год журнала: 2025, Номер 15(2), С. 443 - 443
Опубликована: Фев. 11, 2025
Reclaimed water irrigation is increasingly being applied to address global scarcity, yet its long-term effects on soil nitrogen cycling and salinity dynamics, particularly in agricultural agroforestry systems, remain complex insufficiently understood. Understanding these impacts crucial for developing sustainable practices that optimize resource use while ensuring the health viability of systems. This study employs genetic-algorithm-optimized random forest models (GA-RF1 GA-RF2) examine dynamics indicators (NO3−-N, NH4+-N, TN) (EC Cl−) under reclaimed irrigation. The achieved high predictive accuracy, with NSE values 0.918, 0.946, 0.936, 0.967, 0.887 NO3−-N, TN, EC, Cl−, respectively, demonstrating their robustness. Key drivers were identified as duration (years), fecal coliform levels, depth, primarily influenced by land type chemical composition water, including oxygen demand, total phosphorus, nitrogen. Spatial analysis revealed significant accumulation surface soils extended irrigation, farmland, where NO3−-N NH4+-N peaked at 25 mg/kg 15 mg/kg, respectively. EC exceeded 700 µS/cm during early stages but remained within crop tolerance levels. Conversely, grassland woodland exhibited minimal accumulation. These findings underscore need targeted management strategies mitigate buildup, ensure productivity
Язык: Английский
Процитировано
0
Sensors and Actuators B Chemical, Год журнала: 2025, Номер unknown, С. 137461 - 137461
Опубликована: Фев. 1, 2025
Язык: Английский
Процитировано
0