Toward a better understanding of the environmental impacts of expanding farmer-led irrigation in Sub-Saharan Africa: an exploratory assessment of irrigation-induced risk of nutrient water pollution in Ethiopia DOI Creative Commons
Hua Xie, Yihun T. Dile, Claudia Ringler

et al.

Environmental Research Communications, Journal Year: 2023, Volume and Issue: 5(6), P. 065001 - 065001

Published: May 18, 2023

Abstract Irrigation, and especially farmer-led irrigation, is considered to be a promising option for enhancing agricultural productivity in Sub-Saharan Africa. However, there lack of thorough understanding the impacts irrigation development on environment. Past discussions are mainly limited water depletion hydrological regime change effect irrigation. This paper presents study narrow knowledge gap by assessing nutrient pollution risk induced expansion Ethiopia. Using household survey data collected from four woredas Ethiopia where irrigated crop production currently concentrates, we first evaluate impact cropping intensity annual consumption level fertilizers then use findings analysis support conceptualization modeling framework at national scale. We project that overall will lead gentle increase total loadings. result helps justify endeavor promoting On other hand, projected flow loading growth rate related highly heterogeneous spatially, local quality deterioration exists. There still need make investment ensure environmental sustainability development.

Language: Английский

The coupling and coordination assessment of food-water-energy systems in China based on sustainable development goals DOI Open Access

Youting Cheng,

Jinlong Wang, Kesheng Shu

et al.

Sustainable Production and Consumption, Journal Year: 2022, Volume and Issue: 35, P. 338 - 348

Published: Nov. 23, 2022

Language: Английский

Citations

40
Global Sustainable Water Management: A Systematic Qualitative Review DOI
Nuru Hasan, Raji Pushpalatha,

V. S. Manivasagam

et al.

Water Resources Management, Journal Year: 2023, Volume and Issue: 37(13), P. 5255 - 5272

Published: Sept. 7, 2023

Language: Английский

Citations

27
Reassessment of industrial eco-efficiency in China under the sustainable development goals: A meta two-stage parallel entropy dynamic DDF-DEA model DOI
Li Yang, Shiying Chen, Yung‐ho Chiu

et al.

Journal of Cleaner Production, Journal Year: 2024, Volume and Issue: 447, P. 141275 - 141275

Published: Feb. 14, 2024

Language: Английский

Citations

11
Invasive Anopheles stephensi in Africa: insights from Asia DOI Creative Commons
R. Taylor, Louisa A. Messenger, Tarekegn A. Abeku

et al.

Trends in Parasitology, Journal Year: 2024, Volume and Issue: 40(8), P. 731 - 743

Published: July 24, 2024

Anopheles stephensi is a highly competent urban malaria vector species, endemic in South Asia and the Persian Gulf, which has colonised eight countries sub-Saharan Africa (SSA) since 2013 now spreading uncontrollably. In areas of Africa, where transmission previously been low or non-existent, invasion An. represents significant problem, particularly to immunologically naïve populations. Despite this rapidly advancing threat, there paucity information regarding bionomics SSA. Here, we offer critical synthesis literature from stephensi's native range, focusing on future urbanising highlighting key questions that warrant prioritisation by global control community.

Language: Английский

Citations

10
Using isotopes to understand landscape‐scale connectivity in a groundwater‐dominated, lowland catchment under drought conditions DOI
Lukas Kleine, Doerthe Tetzlaff, Aaron Smith

et al.

Hydrological Processes, Journal Year: 2021, Volume and Issue: 35(5)

Published: April 30, 2021

Abstract The Demnitzer Millcreek catchment (DMC), is a 66 km 2 long‐term experimental located 50 SE of Berlin. Monitoring over the past 30 years has focused on hydrological and biogeochemical changes associated with de‐intensification farming riparian restoration in low‐lying landscape dominated by rain‐fed forestry. However, function catchment, which closely linked to nutrient fluxes highly sensitive climatic variability, still poorly understood. In last 3 years, prolonged drought period below‐average rainfall above‐average temperatures resulted marked change. This caused low soil moisture storage growing season, agricultural yield losses, reduced groundwater recharge, intermittent streamflows parts an increasingly disconnected channel network. paper focuses two‐year long isotope study that sought understand how different affect ecohydrological partitioning, connectivity streamflow generation during conditions. work shown critical importance sustaining flows, basic in‐stream ecosystem services dominant influence vegetation recharge. Recharge was much lower occurred shorter window time winter under forests compared grasslands. Conversely, recharge locally enhanced wetlands storage‐dependent water losses from stream subsurface. isotopic variability displayed complex emerging spatio‐temporal patterns flow duration droughts may have implications for solute transport future interactions between landscapes riverscapes. Given climate projections drier warmer summers, are very likely not just region, but similar lowland areas across Europe. An integrated land management strategy will be essential such systems future.

Language: Английский

Citations

48
Groundwater vulnerability to pollution in Africa’s Sahel region DOI Creative Commons
Joel Podgorski,

Oliver Kracht,

Luis Araguás‐Araguás

et al.

Nature Sustainability, Journal Year: 2024, Volume and Issue: 7(5), P. 558 - 567

Published: April 26, 2024

Abstract Protection of groundwater resources is essential to ensure quality and sustainable use. However, predicting vulnerability anthropogenic pollution can be difficult where data are limited. This particularly true in the Sahel region Africa, which has a rapidly growing population increasing water demands. Here we use measurements tritium ( 3 H) with machine learning create an aquifer map (of western Sahel), forms important basis for management. Modelling shows that arid areas greater precipitation seasonality, higher permeability deeper wells or table generally have older less pollution. About half modelled area was classified as vulnerable. Groundwater based on recent recharge, implying sensitivity also changing climate, example, through altered evapotranspiration. study showcases efficacy using assess value analyses groundwater, towards improving spatial temporal resolution.

Language: Английский

Citations

7
Understanding Links Between Water Scarcity and Violent Conflicts in the Sahel and Lake Chad Basin Using the Water Footprint Concept DOI Creative Commons
Elias Nkiaka, Robert G. Bryant, Zongho Kom

et al.

Earth s Future, Journal Year: 2024, Volume and Issue: 12(2)

Published: Feb. 1, 2024

Abstract Whilst there are several empirical studies linking water scarcity and violent conflicts, existing quantitative use mostly climate environmental variables even though such have been shown to not be strong predictors of conflicts by some studies. The aim this study was the footprint concept Falkenmark index identify hotspots at sub‐national scale understand links between in Sahel Lake Chad Basin over a period two decades (2000–2021). We achieve developing five metrics monthly timescale using runoff, soil moisture, potential evapotranspiration, consumption demographic data. developed show high levels across area during dry, pre‐monsoon post‐monsoon seasons. Analyses further reveal green (GWS) (soil moisture deficit) low scores (water stress) seasons, all reported conflict locations. This suggest that is an indirect link GWS, conflicts. Results from may used enhance management, mitigate, prevent likewise methodology adopted address other regions.

Language: Английский

Citations

6
Mapping local green hydrogen cost-potentials by a multidisciplinary approach DOI Creative Commons

Shitab Ishmam,

Heidi Heinrichs, Christoph Winkler

et al.

International Journal of Hydrogen Energy, Journal Year: 2024, Volume and Issue: 87, P. 1155 - 1170

Published: Sept. 14, 2024

Language: Английский

Citations

6
Water security assessment in ungauged regions using the water balance and water footprint concepts and satellite observations DOI Creative Commons
Elias Nkiaka

Hydrology Research, Journal Year: 2022, Volume and Issue: 53(2), P. 336 - 352

Published: Feb. 1, 2022

Abstract Water security assessments often rely on outputs from hydrological models that are applicable only in gauged regions where there river discharge data to constrain the models. Therefore, is an urgent need explore new methods for assessing water ungauged regions. This study proposes use of balance and footprint concepts satellite observations assess Anglophone Cameroon, which example a typically region. Specifically, assesses demand-driven scarcity terms blue green scarcities population-driven quantified using Falkenmark index across all districts Cameroon. The also performs spatiotemporal trend analysis precipitation temperature area Mann–Kendall test. Precipitation returns varying strengths magnitudes different unlike demonstrates upward districts. assessment shows substantially low most districts, whereas observed densely populated (<1,700 m3/capita/year). results this suggest proposed method may be used irrespective climate or population size.

Language: Английский

Citations

26
Water accounting under climate change in the transboundary Volta River Basin with a spatially calibrated hydrological model DOI Creative Commons
Moctar Dembélé, Elga Salvadore, Sander J. Zwart

et al.

Journal of Hydrology, Journal Year: 2023, Volume and Issue: 626, P. 130092 - 130092

Published: Aug. 26, 2023

Sustainable water management requires evidence-based information on the current and future states of resources. This study presents a comprehensive modelling framework that integrates fully distributed mesoscale Hydrologic Model (mHM) climate change scenarios with Water Accounting Plus (WA+) tool to anticipate resource challenges provide mitigation measures in transboundary Volta River basin (VRB) West Africa. The mHM model is forced large ensemble projection data from CORDEX-Africa. Outputs are used as inputs WA+ report flows consumption over historical baseline period 1991-2020 near-term 2021-2050 at scale, also across spatial domains including four climatic zones, sub-basins six riparian countries. long-term multi-model mean net inflow found be 419 km3/year an inter-annual variability 11% projected slightly increase (2021-2050). However, evaporation consumes most inflow, only 8% remaining runoff. About 4 currently for man-made activities. Only 45% available beneficially consumed, agricultural sector representing 34% beneficial consumption. availability due rainfall, along higher inter-model variabilities, thereby highlighting need adaptation strategies. These findings proposed climate-resilient land strategies can help optimize water-energy-food-ecosystem nexus support decisions policy-making sustainable VRB.

Language: Английский

Citations

13