Global food security under climate change
This article reviews the potential impacts of global climate change on food security. it’s found that of the four main elements of food security, i.e., availability, stability, utilization, and access, only the primary is routinely addressed in simulation studies. to the present end, published results indicate that the impacts of global climate change are significant, however, with a good projected range (between 5 million and 170 million additional people in danger of hunger by 2080) strongly counting on assumed socio-economic development. The likely impacts of global climate change on the opposite important dimensions of food security are discussed qualitatively, indicating the potential for further negative impacts beyond those currently assessed with models. Finally, strengths and weaknesses of current assessment studies are discussed, suggesting improvements and proposing avenues for brand spanking new analyses. [1]
Global Food Security: Challenges and Policies
Global food security will remain a worldwide concern for subsequent 50 years and beyond. Recently, crop yield has fallen in many areas due to declining investments in research and infrastructure, also as increasing water scarcity. global climate change and HIV/AIDS also are crucial factors affecting food security in many regions. Although agroecological approaches offer some promise for improving yields, food security in developing countries might be substantially improved by increased investment and policy reforms. [2]
The story of phosphorus: Global food security and food for thought
Food production requires application of fertilizers containing phosphorus, nitrogen and potassium on agricultural fields so as to sustain crop yields. However modern agriculture depends on phosphorus derived from phosphate rock, which could also be a non-renewable resource and current global reserves may be depleted in 50–100 years. While phosphorus demand is projected to extend , the expected global peak in phosphorus production is predicted to occur around 2030. the precise timing of peak phosphorus production could be disputed, however it’s widely acknowledged within the fertilizer industry that the standard of remaining phosphate rock is decreasing and production costs are increasing. Yet future access to phosphorus receives little or no international attention. [3]
Feeding ten billion people is possible within four terrestrial planetary boundaries
Global agriculture puts heavy pressure on planetary boundaries, posing the challenge to realize future food security without compromising Earth system resilience. On the idea of process-detailed, spatially explicit representation of 4 interlinked planetary boundaries (biosphere integrity, land-system change, freshwater use, nitrogen flows) and agricultural systems in an internally consistent model framework, we here show that nearly half current global food production depends on planetary boundary transgressions. Hotspot regions, mainly in Asia, even face simultaneous transgression of multiple underlying local boundaries. [4]
Employment Generation, Increasing Productivity and Improving Food Security through Farming Systems Technologies in the Monga Regions of Bangladesh
Monga is seasonal food insecurity in ecologically vulnerable and economically weak parts of north-western Bangladesh, primarily caused by an employment and income deficit before Transplanted aman paddy (summer rice) harvest. It mainly affects those rural poor, who have an undiversified income that’s directly or indirectly supported agriculture. Rangpur and Lalmonirhat districts under greater Rangpur region are severely suffering from Monga. For increasing employment and food accessibility in these regions this study was undertaken. The farm data for this empirical application are collected from two districts (Rangpur and Lalmonirhat) of greater Rangpur through a farm management survey. A sample of 90 farms from each district has been surveyed taking 30 from marginal, 30 from small and 30 from medium farm groups using sampling technique method. [5]
Reference
[1] Schmidhuber, J. and Tubiello, F.N., 2007. Global food security under climate change. Proceedings of the National Academy of Sciences, 104(50), (Web Link)
[2] Rosegrant, M.W. and Cline, S.A., 2003. Global food security: challenges and policies. Science, 302(5652), (Web Link)
[3] Cordell, D., Drangert, J.O. and White, S., 2009. The story of phosphorus: global food security and food for thought. Global environmental change, 19(2), (Web Link)
[4] Feeding ten billion people is possible within four terrestrial planetary boundaries
Dieter Gerten, Vera Heck, Jonas Jägermeyr, Benjamin Leon Bodirsky, Ingo Fetzer, Mika Jalava, Matti Kummu, Wolfgang Lucht, Johan Rockström, Sibyll Schaphoff & Hans Joachim Schellnhuber
Nature Sustainability (2020) (Web Link)
[5] Anwar, M., Ferdous, Z., Sarker, M., Hasan, A., Akhter, M., Zaman, M., Haque, Z. and Ullah, H. (2017) “Employment Generation, Increasing Productivity and Improving Food Security through Farming Systems Technologies in the Monga Regions of Bangladesh”, Annual Research & Review in Biology, 16(6), (Web Link)
