Climate Change, Carbon Dioxide and Global Crop Production: Food Security and Uncertainty

2013 ◽  
Author(s):  
Lewis H. Ziska
Keyword(s):  
Climate Change ◽  
Carbon Dioxide ◽  
Food Security ◽  
Crop Production

scholarly journals Governing Net Zero Carbon Removals to Avoid Entrenching Inequities

2021 ◽  
Vol 3 ◽  
Author(s):  
Peter Healey ◽  
Robert Scholes ◽  
Penehuro Lefale ◽  
Pius Yanda
Keyword(s):  
Climate Change ◽  
Carbon Dioxide ◽  
Food Security ◽  
Natural Resources ◽  
Burden Sharing ◽  
Net Zero ◽  
Global North ◽  
Zero Carbon ◽  
Interdisciplinary Effort ◽  
Global Agreement

Climate change embeds inequities and risks reinforcing these in policies for climate change remediation. In particular, with policies designed to achieve “net zero” carbon dioxide, offsets may be considered inequitable if seen to avoid or delay gross emission reductions; offsets to emissions through technologically mature methods of carbon dioxide removals (CDR) require natural resources at scales threatening food security; knowledge of the potential of immature CDR is largely a global north monopoly; and CDR in particular environments is ill-understood and its implications for development unexamined. The use of CDR to contribute to robust progress toward Paris climate goals requires global agreement on simultaneously reducing emissions and enhancing removals, equity in burden sharing, and an interdisciplinary effort led by individual jurisdictions and focused on the co-development of technologies and governance to create CDR portfolios matched to local needs.

scholarly journals Drought-tolerant Varieties as an Adaptation Strategy in the Context of Climate Change: Insight from Maize Production Systems in Benin

2020 ◽  
pp. 1-7
Author(s):  
Mohamed Nasser Baco
Keyword(s):  
Climate Change ◽  
Food Security ◽  
Crop Production ◽  
Production Systems ◽  
Smallholder Farmers ◽  
Value Chains ◽  
Maize Production ◽  
Ecological Zones ◽  
Drought Tolerant ◽  
Agro Ecological Zones

Previous studies suggested that maize is set to become a cash crop while ensuring food security better than any other crop. However, climate change has become one of the key production constraints that are now hampering and threatening the sustainability of maize production systems. We conducted a study to better understand changes here defined as adaptations made by smallholder farmers to ensure food security and improve income through maize production in a climate change context. Our results show that maize farmers in northern Benin mainly rely on traditional seeds. Drought as abiotic stress is perceived by farmers in many agro-ecological zones as a disruptive factor for crop production, including maize. When drought is associated with pest damages, both the quantity (i.e. yield) and the quality (i.e. attributes) of products/harvests are negatively affected. The adverse effects of drought continue to reduce production in different agro-ecological zones of the country, because of the lack of widespread adoption of tolerant varieties. The study suggests actions towards the production of drought-tolerant maize seeds, a promotion of seed companies, the organization of actors and value chains. Apart from climate change, the promotion of value chains is also emerging as one of the important aspects to take into account to sustain maize production in Benin.

The Threats to Food Security

2019 ◽  
pp. 61-84
Author(s):  
Gordon Conway ◽  
Ousmane Badiane ◽  
Katrin Glatzel
Keyword(s):  
Climate Change ◽  
Carbon Dioxide ◽  
Nitrous Oxide ◽  
Food Security ◽  
Greenhouse Gases ◽  
Acute Stress ◽  
Rural Livelihoods ◽  
Farm Household ◽  
Impacts Of Climate Change ◽  
Socioeconomic Challenges

This chapter explores threats to food security. It reveals many challenges arising from a range of threats external to the farm household, including severe biological threats from pests, disease, and weeds. Moreover, healthy, fertile soils are the cornerstone of food security and rural livelihoods, but African soils are degrading. Water is just as important for the productivity of plants, and lack of water leads to chronic and acute stress. Indeed, Africa is already battling the impacts of climate change. Rising temperatures and variable rainfall are increasing the exposure of smallholders to drought, famine, and disease. Agriculture is an important emitter of greenhouse gases (GHGs), not only carbon dioxide but also such powerful gases as methane and nitrous oxide. In addition, there are often severe socioeconomic challenges, including unstable and high prices of basic commodities. Finally, conflicts cause disruption to food security.

scholarly journals Impact of Climate Change on Crops Adaptation and Strategies to Tackle Its Outcome: A Review

Plants ◽  
2019 ◽  
Vol 8 (2) ◽  
pp. 34 ◽  
Author(s):  
Ali Raza ◽  
Ali Razzaq ◽  
Sundas Mehmood ◽  
Xiling Zou ◽  
Xuekun Zhang ◽  
...  
Keyword(s):  
Climate Change ◽  
Food Security ◽  
Crop Production ◽  
Climate Changes ◽  
Heat Waves ◽  
Negative Impact ◽  
Global Climate ◽  
Climate Change Impacts ◽  
Annual Rainfall ◽  
Ozone Level

Agriculture and climate change are internally correlated with each other in various aspects, as climate change is the main cause of biotic and abiotic stresses, which have adverse effects on the agriculture of a region. The land and its agriculture are being affected by climate changes in different ways, e.g., variations in annual rainfall, average temperature, heat waves, modifications in weeds, pests or microbes, global change of atmospheric CO2 or ozone level, and fluctuations in sea level. The threat of varying global climate has greatly driven the attention of scientists, as these variations are imparting negative impact on global crop production and compromising food security worldwide. According to some predicted reports, agriculture is considered the most endangered activity adversely affected by climate changes. To date, food security and ecosystem resilience are the most concerning subjects worldwide. Climate-smart agriculture is the only way to lower the negative impact of climate variations on crop adaptation, before it might affect global crop production drastically. In this review paper, we summarize the causes of climate change, stresses produced due to climate change, impacts on crops, modern breeding technologies, and biotechnological strategies to cope with climate change, in order to develop climate resilient crops. Revolutions in genetic engineering techniques can also aid in overcoming food security issues against extreme environmental conditions, by producing transgenic plants.

Climate change and food production in North West India

2015 ◽  
Vol 49 (6) ◽  
Author(s):  
Savita Ahlawat ◽  
Dhian Kaur
Keyword(s):  
Climate Change ◽  
Food Security ◽  
Food Production ◽  
Crop Production ◽  
Climatic Factors ◽  
Climatic Conditions ◽  
Potential Threat ◽  
North West ◽  
Significant Change ◽  
Northwest Region

At present, climate change is one of the most challenging environmental issues as it poses potential threat to different sectors of economy at global level. Agriculture being an open activity is primarily dependent on climatic factors and change in climatic conditions affects the production, quality and quantity of crop production in an area. This paper attempts to study effects of only two parameters of climate i.e. temperature and rainfall on agricultural production in northwest region of India. Northwest region comprising of Punjab, Haryana, Himachal Pradesh and Jammu Kashmir states is the greatest food bowl of India contributing to its food security. The analysis of mean monthly rainfall and maximum and minimum temperatures (1901-2006) shows no significant change in temperature and rainfall conditions from 1901 to 1960; but afterward the change is more pronounced. On the whole any significant change in climatic conditions will not only challenge the food production of the region but also challenge the country’s food security situation.

scholarly journals Climate change and food security

2005 ◽  
Vol 360 (1463) ◽  
pp. 2139-2148 ◽  
Author(s):  
P.J Gregory ◽  
J.S.I Ingram ◽  
M Brklacich
Keyword(s):  
Climate Change ◽  
Food Security ◽  
Crop Production ◽  
Food Systems ◽  
Food Prices ◽  
Food Distribution ◽  
Physical Factors ◽  
Food Utilization ◽  
Direct Effects ◽  
Gangetic Plain

Dynamic interactions between and within the biogeophysical and human environments lead to the production, processing, distribution, preparation and consumption of food, resulting in food systems that underpin food security. Food systems encompass food availability (production, distribution and exchange), food access (affordability, allocation and preference) and food utilization (nutritional and societal values and safety), so that food security is, therefore, diminished when food systems are stressed. Such stresses may be induced by a range of factors in addition to climate change and/or other agents of environmental change (e.g. conflict, HIV/AIDS) and may be particularly severe when these factors act in combination. Urbanization and globalization are causing rapid changes to food systems. Climate change may affect food systems in several ways ranging from direct effects on crop production (e.g. changes in rainfall leading to drought or flooding, or warmer or cooler temperatures leading to changes in the length of growing season), to changes in markets, food prices and supply chain infrastructure. The relative importance of climate change for food security differs between regions. For example, in southern Africa, climate is among the most frequently cited drivers of food insecurity because it acts both as an underlying, ongoing issue and as a short-lived shock. The low ability to cope with shocks and to mitigate long-term stresses means that coping strategies that might be available in other regions are unavailable or inappropriate. In other regions, though, such as parts of the Indo-Gangetic Plain of India, other drivers, such as labour issues and the availability and quality of ground water for irrigation, rank higher than the direct effects of climate change as factors influencing food security. Because of the multiple socio-economic and bio-physical factors affecting food systems and hence food security, the capacity to adapt food systems to reduce their vulnerability to climate change is not uniform. Improved systems of food production, food distribution and economic access may all contribute to food systems adapted to cope with climate change, but in adopting such changes it will be important to ensure that they contribute to sustainability. Agriculture is a major contributor of the greenhouse gases methane (CH 4 ) and nitrous oxide (N 2 O), so that regionally derived policies promoting adapted food systems need to mitigate further climate change.

scholarly journals Modelling the impact of climate change on maize yield in Victoria Nile Sub-basin, Uganda

2021 ◽  
Vol 15 (1) ◽  
Author(s):  
Joash Bwambale ◽  
Khaldoon A. Mourad
Keyword(s):  
Climate Change ◽  
Food Security ◽  
Crop Production ◽  
Maize Yield ◽  
Well Being ◽  
Adaptation Measures ◽  
Impact Of Climate Change ◽  
Aquacrop Model ◽  
Supplementary Irrigation ◽  
The Impact

AbstractAgriculture is the backbone of Uganda’s economy, with about 24.9% contribution to the gross domestic product (GDP) as per the Uganda National Household Survey 2016/17. Agricultural productivity (yield per hectare) is still low due to the high dependence on rain-fed subsistence farming. Climate change is expected to further reduce the yield per hectare. Therefore, this study aims to evaluate the potential impact of climate change on maize yield in the Victoria Nile Sub-basin using the AquaCrop model. It further assesses the possible adaptation measures to climate change. The Hadley Centre Global Environmental Model version 2–Earth System (HadGEM2-ES) data downloaded from the Coordinated Regional Downscaling Experiment (CORDEX) was used to simulate maize yield in the near future (2021–2040), mid future (2041–2070) and late future (2071–2099). Results show that maize yield is likely to reduce by as high as 1–10%, 2–42% and 1–39% in the near, mid and late futures, respectively, depending on the agro-ecological zone. This decline in maize yield can have a significant impact on regional food security as well as socio-economic well-being since maize is a staple crop. The study also shows that improving soil fertility has no significant impact on maize yield under climate change. However, a combined application of supplementary irrigation and shifting the planting dates is a promising strategy to maintain food security and socio-economic development. This study presents important findings and adaptation strategies that policymakers and other stakeholders such as farmers can implement to abate the effects of climate change on crop production.

scholarly journals Sustainable Agricultural Development under Climate Change in Bangladesh

2013 ◽  
Vol 11 (1) ◽  
pp. 17-28 ◽  
Author(s):  
MAA Faroque ◽  
M Asaduzamman ◽  
M Hossain
Keyword(s):  
Climate Change ◽  
Food Security ◽  
Crop Production ◽  
Food System ◽  
Global Radiation ◽  
Climatic Changes ◽  
Radiation Balance ◽  
Sea Level Changes ◽  
High Yielding Varieties ◽  
The Impact

Climate change is no more an environmental concern it has emerged as biggest developmental challenge for the most vulnerable Bangladesh. The whole international community is also scared of catastrophic adverse effects of future climatic changes on different spheres of man and nature, e.g. deglaciation and sea level changes, submergence of lands, nations and major coastal lowlands, atmospheric dynamics including evaporation and precipitation, global radiation balance, photosynthesis and ecological productivity, plant and animal community and many more. This paper tries to focus the adverse impacts of climatic changes on the crop production, food security, yield gap and sustainable agriculture by crop intensification and diversification. The impact of climate on agriculture could result in problems with food security and may threaten the livelihood activities upon which much of the population depends and thrives. Hilly committed research efforts showed technological progress as evidenced by release of 684 high yielding varieties of various crops and about 769 management technologies by NARS institutes, and universities.  The greatest challenge for the future agriculture under climate change, we need improved and modified warning system, developed climate impact modules, build sufficient resilience of food system, comprehensive climate resilience strategies, develop database on climate. Also need top priority to mitigate the impact of climate change on agriculture through weather services, more research and extension service, agro advisories, insurance, community bank, intensify and diversify crop production system, modern high yielding varieties and management technologies for future sustainable agriculture.DOI: http://dx.doi.org/10.3329/jsf.v11i1.19396

Understanding the Nexus between Climate Change, the Shift in Land Use toward Cashew Production and Rural Food Security in Ghana; the Experiences of Farmers in the Transition Zone of Ghana

2020 ◽  
Vol 3 (2) ◽  
Author(s):  
Victor Adjei ◽  
Moses Ackah Anlimachie
Keyword(s):  
Climate Change ◽  
Land Use ◽  
Food Security ◽  
Crop Production ◽  
Structured Interview ◽  
Food Crops ◽  
Food Crop ◽  
Crop Failure ◽  
Small Holding ◽  
Study District

This study summarises the findings from a study investigating rural small-holding farmers’ experiences on the shift from food crop to cashew in the forest/savanna transitional agro-ecological zone of Ghana and its impact on rural food security. Using a mix method approach, the study sampled the views of 400 farmers from 9 farming communities in the Wenchi Municipality of Ghana via questionnaire and semi-structured interview and collated statistical data on crop production to trace the nexus between climate change, agrarian land-use decisions and food security. The study found evidence of increasing shift from food crop to cashew production. This was evidenced by increasing cashew cultivation and cashew output and decreasing total land acreage for food crops and increasing food insecurity of farmers. The findings revealed that about 71% of farmers had expanded their cashew farms and another 41.0% have turned their food crops’ lands to cashew production. Besides cashew production, (57.0%) has overtaken the traditional food crop -maize (25.5%) production in terms of output.  Instructively, the study found that the main motivation for the shift from food crop to cashew production is not only to maximise income in bulk, but also climate change adaptability issues. The study found that the cashew crop is resilient in adapting to the changing climate and less prone to pests’ invasion compared to maize in the study District. The study found that food security among rural folks had been seriously compromised by the conversion of farmlands from food crop to cashew farming. Although, the study found that female farmers have higher consciousness to food security yet less motivated to shift from food crop to cashew crop production compared to men.  Worryingly, females are the hardest hit group because of their low ownership of or access to farmlands and low voices of women in farmland use decision making in a men-dominant rural extended family setting of the study District. The study concludes that climate change adaptability concern has introduced a new set of risks including crop failure due to changing rainfall pattern and increasing incidence of pest invasions forcing the rural folks to compromise innovative indigenous farming focus and practices that have helped them to navigate extreme food poverty. This study, therefore, argues for improved food crop seeds tailored to the specific climatic context and innovative farming practices that beef-up small-holding farmers’ capacity to navigate climate change to continually produce food crop to ensure rural food security and sustainability.

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